Review on CRF230F 2003-2013 Full Slip-On Exhaust Muffler - Ultimate Complete Exhaust System Upgrade by Chris Hunt

Neat secondary exhaust for a pit bike. The only aftermarket exhaust that really performs is the Yoshi. I put one of these on my CRF 230 and it got way louder than any 450 on the track. It does absolutely nothing for performance. The stick tube gives you more power. If you're just looking for a lot of noise and a cheap replacement, that's fine. You will definitely need to rebuild your bike.