Parts › GREEVES/VILLIERS 250 66MM STD TOP DYKES PISTON RING GREEVES PART NUMBER G1019 Image 1 of 2 Image 2 of 2 GREEVES/VILLIERS 250 66MM STD TOP DYKES PISTON RING GREEVES PART NUMBER G1019 £10.00 sold out DYKES TOP RING (piston ring gap should always be checked in bore) Sold Out Added! DYKES TOP RING (piston ring gap should always be checked in bore)