The Compression Ring of the 2nd groove isScraper. The Oil Ring hasCoil Spring (3rd groove). Protect your valuable machine.
Piston Ring Set for RUGGERINI RD80, RD81, RD180, RD181, RD188 (80mm) [#2340]
Piston Ring Set for DUCATI IS11, IS110, DM184, DM284, DM842 (85mm) [#064847890]
Piston Ring Set for RUGGERINI CRD100, P101, RP170, RP178, RP320, RP328 (101mm)
Piston Ring Set for RUGGERINI CRD100, P101, RP170, RP178, RP320, RP328 (100.5mm)
Piston Ring Set for RUGGERINI CRD100, P101, RP170, RP178, RP320, RP328 (100mm)
Piston Ring Set for SLANZI DVA1200, DVA1750, DVA1750S, DVA2350 (92mm) [#469069]