Martelius x BGRS AE86 Group. A Fast Road / Track Header for 16V and 20V 4AGEs

Regular price $795.00

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Elevate the performance of your AE86 to new heights with the Battle Garage and Martelius Collaboration Header, designed for hot AE86's. Crafted through a collaboration between Battle Garage and Martelius, this header represents the pinnacle of exhaust engineering for the AE86 platform, delivering unparalleled performance and durability on the track and the street.

The Battle Garage and Martelius Collaboration Header is meticulously crafted to meet the demands of high-performance AE86 enthusiasts. With its innovative design and premium construction, this header sets a new standard for exhaust systems in the AE86 community, providing unmatched power and reliability for drivers who demand the best.


  • Specially designed for 16V and 20V 4AGE engines in both LHD and RHD layouts.
  • Compatible with 16V distributor and power steering setups for added versatility.
  • 4-2-1 design optimized for competitive rally events, offering a broad power band and strong mid-range performance without sacrificing top-end power.
  • Thinwall stainless steel construction for lightweight durability, ensuring maximum performance and longevity.
  • Spec'd by Battle Garage for plug-and-play installation with O2 sensors in the factory position, eliminating the need for wire extensions.
  • Bolts up to catalytic converter in factory position for seamless integration with existing exhaust systems.
  • Available in 39mm -> 44mm -> 52mm configurations for enhanced exhaust flow and performance.
  • Comes in three easy-to-assemble pieces for convenient shipping and installation.
  • Two sensor ports provided for compatibility with both factory and wideband O2 sensors.


  • Material: Stainless Steel
  • Compatibility: 16V and 20V 4AGE engines
  • Power Output: Optimized for engines up to 180 bhp


The Battle Garage and Martelius Collaboration Header is the result of extensive research and development, aimed at maximizing power delivery and engine response across the entire RPM range. By carefully balancing exhaust flow and scavenging efficiency, this header ensures optimal performance in a wide range of driving conditions, from spirited street driving to competitive track events.

Why do we think this header is ideal for most 4AGE owners?

This header has been designed to get as much power under the curve as possible while still letting the engine breathe up high.  This is important for hill climbs, rally, drifting, and even street driving (in areas without pollution control of course) as the car can go from falling flat on it's face at 3K rpm, to pulling well with a properly spec'd header. For instance, some may have noticed that after installing any one of the commonly available 4-1 headers, the car was much weaker than stock below 5K rpm, and maybe pulled a bit better up high.  Maybe.  Or, a 4-2-1 header was purchased, but the tubes were far too large, secondaries too short, and the car still was dead below 5K?  Exhaust primaries and secondaries are critical, folks. Just trust us when we say that this is a pretty good starting point for people wanting the most overall power out of their 4AGEs. 



  • Battle Garage and Martelius Collaboration Header
  • All necessary mounting hardware
  • OEM 16V Exhaust Hardware can be found here. 


Designed specifically for hot AE86's, this header offers a perfect fit and hassle-free installation on 16V and 20V 4AGE engines. Whether you're upgrading your daily driver or building a dedicated track machine, the Battle Garage and Martelius Collaboration Header delivers the performance and reliability you need to stay ahead of the competition.

Note: For ease of shipping and installation, this header comes in 3 pieces and is just slipped together, then bolted in place.  Also, to give the user the option of using either the factory O2 sensor, or the wideband O2 sensor, two sensor ports are provided. The factory O2 sensor port can easily be opened up with a power drill before use.

The oil filter will need to be right up against the block or on a sandwich plate at most. The larger oil filter mount found on later 4AGE's will need to be removed with an Oil filter union, found here

Regarding Martelius R1 high-rise header - there are ONLY suitable for full race engines with 290 duration cams or greater!