Spec II is a specially designed system for competition use only. Its simple straight thru design creates an increase of exhaust gas velocity in order to improve efficiency. The middle silencer (resonator) on the main pipe is designed to maintain torque in the low to mid speed range.

All mufflers are made with SUS304 stainless steel, 1mm is used for main pipe. and the ultra 0.8mm is used for main silencer. This combination creates a super light weight muffler.

Mounting hardware, gaskets, and inner silencer is included with all systems.

This is a Race Only product that is to be used solely for competition. It cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws.