Big Bore Header Triumph 400
$219.00
AVAILABLE 08/21/2025
NOT FOR SALE IN CALIFORNIA
DO NOT PURCHASE IF YOUR “SHIP TO” ADDRESS IS IN CALIFORNIA
Please read carefully: FITS ALL TRIUMPH 400 MODELS
We have two versions of this header.
One has only one sensor port which is near the top of the header – Price $189.
The other has two sensor ports, with the additional one being low down near the bottom of the engine – Price $219.
THIS LISTING IS FOR THE 2-PORT HEADER
Most bikes in the US have two sensors. If your bike has two sensors in the stock exhaust you must pick our two-sensor header. If your bike only has one sensor, please contact us.
NOTE – This listing is for the front pipe only – We also sell this as part of our Full Exhaust System for these bikes – Available shortly, but you can buy the header and muffler separately at this time
Premium Materials: Crafted from 304 stainless steel for durability.
Exclusive TEC Design: Unique and manufactured by TEC.
Fittings Included:
- 1x Stainless Steel Decat Front Pipe
- 1x Heat Shield Mounting Bracket
- 2x Heat Shield Mounting Bracket Clamps
- 1x Head to Front-pipe Gasket
- 1x Stop Rubber for side-stand
- Nut & washer for bottom sump guard bracket
No ECU Modification Required: However, we recommend removing the snorkel from the airbox to prevent the bike from running too rich at high RPM.
Compatibility: Can be used with the original Triumph silencer if you want to keep the E-markings on the original silencer. Also can be used with the TEC silencer or any other aftermarket silencer (that fits the stock header pipe).
Weight Savings & Design Options:
- Maintains a clean, consistent angle in line with the bike and allows you to fit the stock Triumph end-can, our TEC silencer or any silencer that works with the Triumph header.
- Significantly lighter – as there is no cat, it is much lighter than the original.
- Can fit the original front heat shield or leave it bare, whichever you think looks best.
Installation & Sound Test Video: One port header
The product is strictly for off-road/race/demonstration use only.
