Sidewinder-Thundercat Stock Header Porting

$1,047.38 USD

For the guys needing the best possible flow out of the stock Sidewinder-Thundercat header. The stock header has a very inconsistent flow from one cylinder compared to the others. We developed a mod that improves flow as well as makes all three cylinders flow the same.


A must for racers with rules requiring the use of stock exhaust.

  • Send us stock Header for in-shop Porting

Additional information

Weight 5 lbs
Dimensions 20 × 20 × 6 in


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