998cc flat top 3 ring circlip type piston set as fitted to early A plus to replace 4 ring set type. Gave 10.3 to1 CR and is a good alternative to use on any 998 with circlip type pistons. Replaced 4 ring(3 ring and scraper) P20754 from Hepolite 1980...

Single piston ring for 73.5mm Mega and Omega pistons with 1.2mm thick rings and 3 piece oil rings-also for new range of EVO pistons C-STN101

for old 73.5 pistons with 1.5mm top ring try using our C-STN97.

Race quality Single piston ring pack for Mini Spares Evolution Pistons which also fits Mega and Omega pistons. This uses 3 piece oil ring 4mm and 2 of 1.2mm compression ring--sold per piston so 4 packs required per engine