The SA-4 head pipe is offered as an option to add to your SA-4 slip on. If you have an existing SA-4 slip on and are looking to add more power and replace your stock head pipe, this is it

TIG welded 304 Stainless steel

Larger diameter than stock allowing more flow

Maximum clearance and seamless fit

Increased horsepower and torque gains

Hand-crafted in the USA