Pro Circuit 4 stroke

The Pro Circuit Ti-4GP Complete Systems ($899.95~$949.95) are designed as a total performance exhaust systems. These exhaust systems are dyno and track tested by riders like James Stewart, Ricky Carmichael and Ryan Villopoto as a no-compromise full-race exhaust. The ultra-lightweight titanium Ti-4GP is our premium exhaust system and it includes our titanium header pipe. The Ti-4GP exhaust will boost performance from bottom all the way to the top end, making it easier to ride and lowering lap times. The silencer can is easily repacked simply by removing the inlet cap screws and re-wrapping the silencer core. The Ti-- 4GP meets all AMA sound restrictions. This is the exact same exhaust system that won four out of five AMA National and Supercross titles in 2007

The T-4 Slip-on has an impressive design, polished aluminum canister, stainless stell mid pipe and ultra responsive performance. Setting an affordable standard of riding ecitement, the T-4 Slip-On is developed to increase the horesepower and torque throughout the power

The Pro Circuit T-4GP system is an aluminum and stainless replica of our more-exotic titanium Ti-4GP exhaust. Although the T-4GP is slightly heavier than the Ti-4GP, it still offers a considerable weight savings when compared to the OEM exhaust system. This exhaust system is ideal for a racer on a budget that is not willing to compromise on performance! The only difference between the T-4GP and Ti-4GP is that high-quality stainless steel replaces the Ti- 4GP titanium. The T-4GP comes complete with our stainless head pipe that works in conjunction with the silencer to produce more power from bottom to top. The use of stainless steel for the header pipe offers increased strength and should give years of trouble-free use. The silencer canister is easy to repack by removing the inlet cap screws and re-wrapping the silencer core. The T-4GP meets all AMA sound restrictions.