Thunderheader X Series

Thunderheader X Series The new THUNDERHEADER X-SERIES for Touring is our large diameter exhaust specifically designed for big cubic inch engines (107" and larger), built to produce big numbers. The X-SERIES is designed with 2" primary tubes with a 14 degree transition chamber to allow more exhaust flow. Our unique patented baffle in conjunction with our trademark tail cone is designed to allow a free flowing exhaust while creating a anti reversion condition in the pipe which will aid the air/fuel flow on the intake stroke to allow more fuel into the combustion chamber. This means more torque at the low & mid RPM ranges and maximum horsepower at top end. The X-SERIES comes complete with heat shields and all mounting hardware. Current lead time is up to 16 weeks on all Thunderheader Racing Products, we do not stock them. Race waiver needed for California customers (Click Link to Access)