If you're just freshening up your top end and having the cylinders honed, install a fresh set of rings to ensure a tight fit. Set comes with 4 rings and the oil ring spacer. WAVE 125/XRM 125 PISTON RING SET STANDARD (HPI) (GENUINE: 13011-KPH-900... Standard piston ring set for the stock / standard bore on many of the Honda 90cc models. Be very careful when installing the cylinder over new rings, it's helpful to have the proper tool to keep the rings compressed as you lower the cylinder over the pistons. PISTON RINGS SET - 13011-GKAK-91A Honda Trail 90 Parts NOS Honda ATC90 CL90 CT90 S90 SL90 Cam Chain Tensioner Push Rod 14552 028 020 80cc Piston Rings Replaces Honda Part Number: 13011-121-762 Ring Order: Top Compression Ring (silver outer rim)Second Ring (black outer rim)Bottom Rings (3 pieces - Spacer in the middle - 1 thin wiper ring on either side) Fits Honda: ATC90 - 1970-1978CL90 Scrambler - 1967-1969CM91 - 1966-1969CT90 Trail - 1966-1979S90 Super - 1964-1969SL90 Motosport - 1969ST90 Trailsport - 1973-1975 UFlex - M86 Universal Rack & Pinion Steering Cable - 17' - Replaces UFlex - Morse Command 200 Or Teleflex Ssc124 - M86X17. SKU: PV767931. $222.19 $228.19 Make sure to stagger the ring gaps according to the manual.
