Piston set 38,00 (pin 12) K20, (ALMOT) - Simson S51 Note.: For pin 12 mm, groove size 2,00 mm. Set includes: Piston 38,00 (for pin 12mm) K20 Piston rings 38,00 (2pcs) Piston pin Safety clips of piston tenon (2pcs) Can be used for: Simson S51, S53, SR50, Schwalbe KR51/2 (válec 50ccm) ALMOT is a manufacturer of high quality cylinders, heads and pistons for motorcycles with 30 years of experience