This listing is for one brand new set of CP-Carrillo 100mm Piston Rings for CRF450R 505-SX 505-XC SINGLE - 1.0 x 2.0

Included = Rings for 1x Piston 

Ring Size = 100mm 
Top Ring = 1.0mm (Gas Nitrided Steel) 
Oil Ring = 2.0mm (Flex Vent) 

Part Number = CPN2-2-3937 (Material ID = 6148)