Last fall we talked to Eric Gorr about how to improve the low end response in thekids 2001CR125 cheaply. He suggested putting the exhaust manifold from a 2002 CR125 on. Well we finally got around to it yesterday and the results were great :yeehaw: . Thekid was testing it in the backyard and his first reation was look out holeshots. Totally cost after purchase and shipping from Service Honda $35 and about 30 minutes.