I had a couple RM125,s on the 98, I used the topend reeds,they lasted and worked great. When I sold it I put the CARBON TECH lowend reeds in. They worked great low to mid, but didn,t rev as high, and power went flat on top. The buyer was a beginner so that was perfect for him. The 98 125 had a BILL.S pipes porting,pipe and silencer also.