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VW Parts Catalog > A-1 Muffler VW Exhausts
33 products found

A-1 Muffler Performance VW Exhaust Systems

A-1 Muffler makes the finest quality Custom Performance VW Exhaust Systems in the World! There are many options available, and we'll be pleased to help you determine the best merged VW header and muffler for your ride!  A-1 Performance VW exhausts are for people who value quality and want the BEST.  Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to fit the custom specs you submit, and the quality craftmanship features superb tig welds, fit, and finish.
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A-1 Performance Sidewinder MUFFLER, Dual Pea-Shooter Outlets, Fits SW112-SW158-SW134 Header, Pea Shooter Outlet Model for Beetle and Ghia
A-1 Performance Sidewinder MUFFLER, Dual Pea-Shooter Outlets, Fits SW112-SW158-SW134 Header, Pea Shooter Outlet Model for Beetle and Ghia
Base Price $299.95

A-1 Performance Sidewinder MUFFLER, Dual Pea-Shooter Outlets, Fits SW112-SW158-SW134 Header, Pea Shooter Outlet Model for Beetle and Ghia gives other drivers a "WHAT THE $#)*&#)&*" when they see those monster "Pea Shooters" in the stock location! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
This muffler is NOT available to fit the Flanged "Heater Box" version Sidewinder, it also does not clear "Traction Bars", there simply isn't room to fit all that stuff under there!
A-1 Performance Sidewinder MUFFLER, Corner Exit Tailpipe, Fits SW112-SW158-SW134 Header, VW Bug and Super Beetle, Ghia, and Type 2 to 1967
A-1 Performance Sidewinder MUFFLER, Corner Exit Tailpipe, Fits SW112-SW158-SW134 Header, VW Bug and Super Beetle, Ghia, and Type 2 to 1967
Base Price $219.95

A-1 Performance Sidewinder MUFFLER, Corner Exit Tailpipe, Fits SW112-SW158-SW134 Header, VW Bug and Super Beetle, Ghia, and Type 2 to 1967 has a tail pipe exit out and to the right of the car. This muffler version has a mellower tone than the SW-200, since it sends the exhaust (AND NOISE) out and away from your car. If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Speedster Kit Cars with Center Exiting Exhaust Pipe
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Speedster Kit Cars with Center Exiting Exhaust Pipe
Base Price $299.95

A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Speedster Kit Cars with Center Exiting Exhaust Pipe offers a 2 1/2" Hi-Flo straight through core design for maximum power, with as little noise as possible! Center Exit "Looks Right". If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car! Outlet pipe is laterally adjustable, and once positioned can be secured with a set screw, pop rivet, or spot weld.
A-1 Performance Sidewinder Race Bullet MUFFLER, Fits SW112-SW158-SW134 Header, Fits all Car Models
A-1 Performance Sidewinder Race Bullet MUFFLER, Fits SW112-SW158-SW134 Header, Fits all Car Models
Base Price $159.95

A-1 Performance Sidewinder Race Bullet MUFFLER, Fits SW112-SW158-SW134 Header, Fits all Car Models offers a 2 1/2" Hi-Flo straight through core design for engines in excess of 220hp. Serious Performance, and SERIOUSLY LOUD TOO! The Race Bullet looks like an old Cherry Bomb or Glass Pack, it's NOT a quiet muffler, but it's inexpensive, super light, and doesn't hold back the engine at all! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Rear Disc Brakes, All Ghias, Type 2s to 1967, Manx Style Buggies, and Speedster Kit Cars, Hidden Tailpipe
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Rear Disc Brakes, All Ghias, Type 2s to 1967, Manx Style Buggies, and Speedster Kit Cars, Hidden Tailpipe
Base Price $219.95

A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Rear Disc Brakes, All Ghias, Type 2s to 1967, Manx Style Buggies, and Speedster Kit Cars, Hidden Tailpipe offers a 2 1/2" Hi-Flo straight through core design for maximum power, with as little noise as possible! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
THIS MUFFLER ONLY FITS THE NON-FLANGED NON-HEATER BOXER SIDEWINDER VERSION! IF YOU HAVE HEATER BOXES YOU NEED OUR HTSW100!

This muffler is the least visible, but LOUDEST, of the sidewinder muffler versions. Please look at our SW-EBUS and SW-OTB for other sidewinder muffler options for your sidewinder header.
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Traction Bar and NO REAR DISC BRAKES
A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Traction Bar and NO REAR DISC BRAKES
Base Price $219.95

A-1 Performance Sidewinder MUFFLER, Fits SW112-SW158-SW134 Header, Beetle with Traction Bar and NO REAR DISC BRAKES offers a 2 1/2" Hi-Flo straight through core design for Beetles that have a traction bar (with spacer), but DO NOT CLEAR DISC BRAKES! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
THIS MUFFLER FITS THE NON-FLANGED NON-HEATER BOXER SIDEWINDER VERSION! IF YOU HAVE HEATER BOXES YOU NEED OUR HTSW100!
A-1 1 5/8" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_158_R
A-1 1 5/8" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1-HTR-158-R
Price: $319.95

A-1 1 5/8" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_158_R  gives you heat along with the stellar looks and performance you get from your A-1 Lowdown or A-1 Sidewinder header! Run J-pipes in the Summer, but use these for the Frost Season! This one is for the Left Side of the engine. These are fantastic because of their flanged connection to the header, which accommodates real gaskets instead of that stupid exhaust doughnut that always leaks!  Remember that exhaust tubing is measured on the OUTSIDE DIAMETER.
A-1 1 5/8" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_158_L
A-1 1 5/8" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1-HTR-158-L
Price: $319.95

A-1 1 5/8" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_158_L  gives you heat along with the stellar looks and performance you get from your A-1 Lowdown or A-1 Sidewinder header! Run J-pipes in the Summer, but use these for the Frost Season! This one is for the Left Side of the engine. These are fantastic because of their flanged connection to the header, which accommodates real gaskets instead of that stupid exhaust doughnut that always leaks!  Remember that exhaust tubing is measured on the OUTSIDE DIAMETER.
A-1 1 3/4" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_134_R
A-1 1 3/4" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1-HTR-134-R
Price: $329.95

A-1 1 3/4" Flanged Heater Box, Right, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_134_R  gives you heat along with the stellar looks and performance you get from your A-1 Lowdown or A-1 Sidewinder header! Run J-pipes in the Summer, but use these for the Frost Season! This one is for the Left Side of the engine. These are fantastic because of their flanged connection to the header, which accommodates real gaskets instead of that stupid exhaust doughnut that always leaks!  Remember that exhaust tubing is measured on the OUTSIDE DIAMETER.
A-1 1 3/4" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_134_L
A-1 1 3/4" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1-HTR-134-L
Price: $329.95

A-1 1 3/4" Flanged Heater Box, Left, Fits A-1's Lowdown and Sidewinder Headers, A-1_HTR_134_L  gives you heat along with the stellar looks and performance you get from your A-1 Lowdown or A-1 Sidewinder header! Run J-pipes in the Summer, but use these for the Frost Season! This one is for the Left Side of the engine. These are fantastic because of their flanged connection to the header, which accommodates real gaskets instead of that stupid exhaust doughnut that always leaks!  Remember that exhaust tubing is measured on the OUTSIDE DIAMETER.
A-1 Performance Phat Boy Magnaflow Muffler, Fits Bugpack 1 5/8" Street Max 2009-13 and 2009-23
A-1 Performance Phat Boy Magnaflow MUFFLER, Fits Bugpack 1 5/8" Street Max 2009-13 and 2009-23
Base Price $179.95

A-1 Performance Phat Boy Magnaflow Muffler, Fits Bugpack 1 5/8" Street Max 2009-13 and 2009-23, is the finest muffler available for your VW, it's made to fit YOUR CAR! Now you can have great looks to go along with the HEAT you get from that header! The finest muffler available for your VW, it's made to fit YOUR CAR (not one size fits none!). Please triple check what header you have, there are MANY different headers out there, they all vary slightly in their muffler flange orientation and location! These mufflers are designed to fit as high as possible for maximum ground clearance! These mufflers are NOT QUIET! If you want a "Quiet" muffler you need a "Turbo" muffler or Quiet Pack.
A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Berg, Bugpack,CB, NEW EMPI, SCAT, Al's, Kymco, S&S)
A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Berg, Bugpack,CB, NEW EMPI, SCAT, Al's, Kymco, S&S)
Base Price $189.95

A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Berg, Bugpack,CB, NEW EMPI, SCAT, Al's, Kymco, S&S) is the finest muffler available for your VW, it's made to fit YOUR CAR (not one size fits none!). Please triple check what header you have, there are MANY different headers out there, they all vary slightly in their muffler flange orientation and location! These mufflers are designed to fit as high as possible for maximum ground clearance! These mufflers are NOT QUIET! If you want a "Quiet" muffler you need a "Turbo" muffler or Quiet Pack.

SCAT: This muffler fits the SMALL FLANGE SC112, SC158, SC134 headers

CB: This fits CB Performance's SMALL FLANGE headers.

EMPI: If you have an EMPI Merged Header, you should know that EMPI has changed their header design. The new design had the collector flange perpendicular with the ground (Straight up and down). The OLD design had the flange aiming toward the ground at a 10 degree angle. So the NEW Design fits the A-1-500M-2.5, and the OLD design fits the A-1-100M-2.5.
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Beetle with REAR DISC BRAKES, and all Manx Style Buggies, Hidden Tailpipe
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Beetle with REAR DISC BRAKES, and all Manx Style Buggies, Hidden Tailpipe
Base Price $219.95

A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Beetle with REAR DISC BRAKES, and all Manx Style Buggies, Hidden Tailpipe offers a 2 1/2" Hi-Flo straight through core design for Beetles that have a traction bar (with spacer)! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
This muffler is the least visible, but LOUDEST, of the sidewinder muffler versions. Please look at our SW-EBUS and SW-OTB for other sidewinder muffler options for your sidewinder header.

THIS MUFFLER FITS THE FLANGED HEATER BOXER SIDEWINDER VERSION! IF YOU HAVE THE SLIP JOINTED VERSION YOU NEED OUR SW200!
A-1 Performance Phat Boy Magnaflow Muffler, Small Flange Empi, Phoenix, and Berg Non-Merged Headers
A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Empi, Phoenix, and Berg Non-Merged Headers
Base Price $169.95

A-1 Performance Phat Boy Magnaflow Muffler, Small Flange Empi, Phoenix, and Berg Non-Merged Headers is the finest muffler available for your VW, it's made to fit YOUR CAR! These headers have heater boxes or J-pipes. Please triple check what header you have, there are MANY different headers out there, they all vary slightly in their muffler flange orientation and location! These mufflers are designed to fit as high as possible for maximum ground clearance! These mufflers are NOT QUIET! If you want a "Quiet" muffler you need a "Turbo" muffler or Quiet Pack.
A-1 Performance Phat Boy Turbo Muffler, Small Flange Empi, Phoenix, and Berg Non-Merged Headers
A-1 Performance Phat Boy Turbo MUFFLER, fits Small Flange Empi, Phoenix, and Berg Non-Merged Headers
Base Price $169.95

A-1 Performance Phat Boy Turbo Muffler, Small Flange Empi, Phoenix, and Berg Non-Merged Headers is the finest muffler available for your VW, it's made to fit YOUR CAR! These headers have heater boxes or J-pipes. This Turbo Muffler is nice and quiet, and is good to around 120hp! This muffler fits the headers which have heater boxes or J-pipes. Please triple check what header you have, there are MANY different headers out there, they all vary slightly in their muffler flange orientation and location! These mufflers are designed to fit as high as possible for maximum ground clearance!
A-1 Performance Phat Boy Magnaflow Muffler, Small Flange Bugpack Street Headers (2031-10 and 2031-13)
A-1 Performance Phat Boy Magnaflow MUFFLER, Fits Small Flange Bugpack Street Headers (2031-10 and 2031-13)
Base Price $169.95

A-1 Performance Phat Boy Magnaflow Muffler, Small Flange Bugpack Street Headers (2031-10 and 2031-13), Perpendicular Flange with Top Bolt in 1 o'clock position. The finest muffler available for your VW, it's made to fit YOUR CAR! (not one size fits none!). The variations in the different models are slight but they are what make this one fit perfect and not just "OK".
A-1 Performance Sidewinder MUFFLER, Out The Back Tailpipe, Fits SW112-SW158-SW134 Header, VW Bug and Super Beetle, and Type 2 to 1967
A-1 Performance Sidewinder MUFFLER, Out The Back Tailpipe, Fits SW112-SW158-SW134 Header, Bug and Super Beetle, Ghia, and Type 2 to 1967
Base Price $219.95

A-1 Performance Sidewinder MUFFLER, Out The Back Tailpipe, (fits SW112-SW158-SW134 Header), for Bug and Super Beetle, Ghia, and early (up to 67) Type 2 has a tail pipe out the back of the car. This is the quietest version of all the sidewinder muffler options, NO MORE DRONE, since this muffler version sends the exhaust (AND NOISE) out and away from your car. If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman. Gorgeous quality, well worth the made-to-order fabrication wait time!
A-1 Performance Sidewinder Muffler (Header NOT included), Type 3 (Squareback, Fastback, Notchback)
A-1 Performance Sidewinder Muffler (Header NOT included), Type 3 (Squareback, Fastback, Notchback)
Base Price $229.95

A-1 Performance Sidewinder Muffler (Header NOT included), Type 3 (Squareback, Fastback, Notchback) offers the best balance of performance, looks, and ground clearance, of any VW Performance Exhaust available! Each one is hand made by a master exhaust system craftsman for YOUR car!
A-1 Performance Sidewinder HT Merged Racing HEADER (Muffler Nor J-pipes included), for Flanged J-Pipes (Heater Box Compatible), Mid Size Tubing
A-1 Performance Sidewinder HT Merged Racing HEADER (Muffler Nor J-pipes included), for Flanged J-Pipes (Heater Box Compatible), Mid Size Tubing
Base Price $299.95

A-1 Performance Sidewinder HT Merged Racing HEADER (Muffler Nor J-pipes included), for Flanged J-Pipes (Heater Box Compatible), Mid Size Tubing offers the best balance of performance, looks, and ground clearance, of any VW Performance Exhaust available! Each one is hand made by a master exhaust system craftsman for YOUR car! Remember that Exhaust Tubing is measured on the OUTSIDE (Not Inside), stock is equivalent to 1 1/4" tubing. A decent guideline is to run 1 3/8" for up to 90hp, 1 1/2" from 90-140hp, and 1 5/8" from 140-175hp. Above this you need a larger exhaust tubing, which we do offer but they cost more! These headers feature a 1 7/8" collector, which is sized properly for engines using up to 1 5/8" primaries. Many other brands of headers have a collector which is too big, and this results in a loss of power and a lot of tuning headaches!
Cylinder 1 and 3 J-pipes or Heater Boxes are not included with this header and must be purchased separately!
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Turned Down Tailpipe
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Turned Down Tailpipe
Base Price $249.95

A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Turned Down Tailpipe offers a 2 1/2" Hi-Flo straight through core design for busses. This is slightly louder than the OTB (Out The Back) muffler. If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
THIS MUFFLER ONLY FITS THE FLANGED HEATER BOXER SIDEWINDER VERSION!

The front of the muffler on this product is moved inward for maximum clearance to the right rear tire.
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Out The Back (OTB) Tailpipe
A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Out The Back (OTB) Tailpipe
Base Price $249.95

A-1 Performance Sidewinder MUFFLER, Fits SWHT112-SWHT158 Heater Box Sidewinder Header, Bay Window Bus, Out The Back (OTB) Tailpipe offers a 2 1/2" Hi-Flo straight through core design for busses. The OTB tailpipe is quieter (less "Droney") than the turned down tailpipe version, and doesn't blow up dust from the ground either! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
THIS MUFFLER ONLY FITS THE FLANGED HEATER BOXER SIDEWINDER VERSION!

The front of the muffler on this product is moved inward for maximum clearance to the right rear tire.
A-1 Performance Low Down Merged Racing MUFFLER (Phat Boy Muffler), Header NOT included, A-1-M1000
A-1 Performance Low Down Merged Racing MUFFLER (Phat Boy Muffler), Header NOT included, A-1-M1000
Base Price $219.95

A-1 Performance Low Down Merged Racing MUFFLER (Phat Boy Muffler), Header NOT included, A-1-M1000 is a serious "muffler" that matches your large flange A1 Lowdown Racing Header! These DO fit under the stock VW body too! This is NOT quiet, but it is "Legal"! Each one is hand made by a master exhaust system craftsman for YOUR car! This fits the 1 5/8, 1 3/4", 1 7/8", and 2" Low Down Headers.
A-1 Performance Sidewinder Header, Fits VW THING, J-pipe Version (NO HEATER BOXES)
A-1 Performance Sidewinder HEADER, Fits VW THING, J-pipe Version (NO HEATER BOXES)
Base Price $349.95

A-1 Performance Sidewinder Header, Fits VW THING, J-pipe Version (NO HEATER BOXES) fits your unique car! Until now exhaust choices for the VW THING have really been slim, but this product opens up a great option for a healthy engine! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!

The THING Version of the sidewinder puts the collector ABOVE the primaries (for optimum ground clearance), while the other sidewinder versions have the collector down low UNDER the primaries.

A-1 Performance Sidewinder MUFFLER, Fits THING Sidewinder Header
A-1 Performance Sidewinder MUFFLER, Fits THING Sidewinder Header
Base Price $249.95

A-1 Performance Sidewinder MUFFLER, Fits THING Sidewinder Header offers a 2 1/2" Hi-Flo straight through core design for THINGS! Exhaust choices for your unique car have really been slim, but this product opens up a great option for a healthy engine! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!
THIS MUFFLER FITS THE NON-FLANGED NON-HEATER BOXER SIDEWINDER VERSION!
A-1 Performance Sidewinder Header, Fits VW THING, Heater Box Version (Flanged J-pipes or Heater Boxes required)
A-1 Performance Sidewinder HEADER, Fits VW THING, Heater Box Version (Flanged J-pipes or Heater Boxes required)
Base Price $399.95

A-1 Performance Sidewinder HEADER, Fits VW THING, Heater Box Version (Flanged J-pipes or Heater Boxes required) fits your unique car! Until now exhaust choices for the VW THING have really been slim, but this product opens up a great option for a healthy engine! If you are looking at buying an A-1 product, it's obvious you value quality and want the BEST! Every A-1 exhaust product is hand made to order by a master exhaust system craftsman to the custom specs you submit for YOUR car!

The THING Version of the sidewinder puts the collector ABOVE the primaries (for optimum ground clearance), while the other sidewinder versions have the collector down low UNDER the primaries.

A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Old EMPI, Flat 4), With Flange Angled 10 Degrees Down
A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Old EMPI, Flat 4), With Flange Angled 10 Degrees Down
Base Price $169.95

A-1 Performance Phat Boy Magnaflow MUFFLER, fits Small Flange Merged Headers (Old EMPI, Flat 4), With Flange Angled 10 Degrees Down. The finest muffler available for your VW, it's made to fit YOUR CAR (not one size fits none!). Please triple check what header you have, there are MANY different headers out there, they all vary slightly in their muffler flange orientation and location! These mufflers are designed to fit as high as possible for maximum ground clearance! These mufflers are NOT QUIET! If you want a "Quiet" muffler you need a "Turbo" muffler or Quiet Pack.

EMPI: If you have an EMPI Merged Header, you should know that they have changed their header design. The new design had the collector flange perpendicular with the ground (Straight up and down). The OLD EMPI design had the flange aiming toward the ground at a 10 degree angle. So the NEW Design fits the A-1-500M-2.5, and the OLD design fits this A-1-100M-2.5.
A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes)
A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), Choose Tubing Size
Base Price $279.95

A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), with Slip-In J-Pipes (No Heater Boxes), offers the best balance of performance, looks, and ground clearance, of any VW Performance Exhaust available! Each one is hand made by a master exhaust system craftsman! Remember that Exhaust Tubing is measured on the OUTSIDE diameter (not Inside) -- stock size exhausts were 1 1/4". A decent guideline is to run 1 3/8" for up to 90hp, 1 1/2" from 90-140hp, 1 5/8" from 140-175hp, and 1 3/4" from 175-220hp. Above this you need an even larger exhaust tubing, which we do offer but they cost more! The Cylinder 1 and 3 J-pipes are INCLUDED with this header. These headers feature a properly sized collector for the primary tubing you have selected. Many other brands of headers have a collector which is too big, and this results in a loss of power and a lot of tuning headaches!
A-1 Performance Low Down Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), 1 5/8, 1 3/4", 1 7/8, or 2" Tubing
A-1 Performance Low Down Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), 1 5/8, 1 3/4", 1 7/8, or 2" Tubing
Base Price $299.95

A-1 Performance Low Down Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), 1 5/8, 1 3/4", 1 7/8, or 2" Tubing is a serious exhaust system for serious racers! These DO fit under the rear apron too! Each one is hand made by a master exhaust system craftsman for YOUR car! Remember that Exhaust Tubing is measured on the OUTSIDE (Not Inside), stock is 1 1/4". We recommend 1 5/8" for applications up to 190hp, 1 3/4" size is needed for 190hp or greater, and get 1 7/8" for 230HP and above! With this system Cylinder 1 and 3 J-pipes are INCLUDED. Note that this header is only available in the "Narrow" 1 and 3 primary locations, otherwise the primaries wind up being too long and power suffers. , Because the 1 and 3 j pipes on a lowdown header are very narrow and close to the engine to keep the pipe length as short as possible, they will NOT clear the thermostat. Thermostat clearance is NOT an option.

These headers now ONLY come with the V-band clamp on the collector-to-muffler joint, so make sure you also purchase the upgrade on your muffler to match V-band style connectors.
A-1 Performance Flanged J-Tubes, fits Flanged Sidewinder or Lowdown Merged Racing Headers, Mid Size Tubing, PAIR
A-1 Performance Flanged J-Tubes, fits Flanged Sidewinder or Lowdown Merged Racing Headers, Mid Size Tubing, PAIR
Base Price $79.95

A-1 Performance Flanged J-Tubes, fits Flanged Sidewinder or Lowdown Merged Racing Headers, Mid Size Tubing, PAIR should be purchased at the SAME TIME as your A-1 Sidewinder or Lowdown Header Order so they fit properly together! Each pair is hand made by a master exhaust system craftsman for YOUR car! Match these to the A-1 header you are purchasing. J-pipes are simple and light, but will not provide cabin heat like heater boxes. These J-pipes have 2-bolt flanges to connect the J-pipes to the header. This is for a PAIR of tubes to do cylinders 1 and 3.
A-1 Performance Upright Manx and Buggy Merged Racing HEADER (Muffler NOT included), J-pipes INCLUDED (No Heater Boxes), 1 1/2, 1 5/8, 1 3/4" Tubing
A-1 Performance Upright Manx and Buggy Merged Racing HEADER (Muffler NOT included), J-pipes INCLUDED (No Heater Boxes), 1 1/2, 1 5/8, 1 3/4" Tubing
Base Price $379.95

A-1 Performance Upright Manx and Buggy Merged Racing HEADER (Muffler NOT included), J-pipes INCLUDED (No Heater Boxes), 1 1/2, 1 5/8, 1 3/4" Tubing is a serious exhaust system for serious racers! These are designed for maximum ground clearance!

Each one is hand made by a master exhaust system craftsman for YOUR car! Remember that Exhaust Tubing is measured on the OUTSIDE (Not Inside), stock is 1 1/4". We recommend 1 5/8" for applications up to 190hp, 1 3/4" size is needed for 190hp or greater!
A-1 Performance Bombshell MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included)
A-1 Performance Bombshell MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included)
Base Price $149.95

A-1 Performance Bombshell MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included) fits our A-1 Buggy Headers! These are designed for maximum ground clearance!

Each one is hand made by a master exhaust system craftsman for YOUR car!
A-1 Performance Crossflow MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included)
A-1 Performance Crossflow MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included)
Base Price $169.95

A-1 Performance Crossflow MUFFLER for Upright Manx and Buggy Merged Racing Headers (Header NOT included) fits our A-1 Buggy Headers! These are designed for maximum ground clearance!

Each one is hand made by a master exhaust system craftsman for YOUR car!
A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), Mid Size Tubing, Type 3 (Squareback, Fastback, Notchback)
A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), Mid Size Tubing, Type 3 (Squareback, Fastback, Notchback)
Base Price $399.95

A-1 Performance Sidewinder Merged Racing HEADER (Muffler NOT included), Slip-In J-Pipes (No Heater Boxes), Mid Size Tubing, Type 3 (Squareback, Fastback, Notchback) offers the best balance of performance, looks, and ground clearance, of any VW Performance Exhaust available! Each one is hand made by a master exhaust system craftsman for YOUR car! Remember that Exhaust Tubing is measured on the OUTSIDE (Not Inside), stock is 1 1/4". A decent guideline is to run 1 3/8" for up to 90hp, 1 1/2" from 90-140hp, and 1 5/8" from 140-175hp. Above this you need a larger exhaust tubing, which we do offer but they cost more! The Cylinder 1 and 3 J-pipes are INCLUDED with this header. These headers feature a 1 7/8" collector, which is sized properly for engines using up to 1 5/8" primaries. Many other brands of headers have a collector which is too big, and this results in a loss of power and a lot of tuning headaches!
   
 
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Order A-1 Muffler VW Performance Exhausts, Mufflers and Headers from Aircooled.Net VW Parts at the same time you are getting the other VW parts you need.  Aircooled.Net is your "one stop shop" for your VW parts and VW tech help.
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