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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
this is the only way to correct main bore issues and prevent crankcase shift
optimal clearance
360° Thrust bearing system
Ready to install
PRO R Stage 3 N/A Cams polaris rzr this is the only wayBC0983 Polaris Pro R (21 up) Stage 3 Normally Aspirated Race Spec (pair) Designed for modified engines. Requires BC valve spring kit, seals and guides for clearance due to high lift. Must run with aftermarket pistons with proper valve reliefs built in. Cannot be ran with stock OE pistons due to possible piston to valve contact. Adv Dur (. 020") 265 265 Dur @ . 050 240 240 Valve Lift (1: 1) . 450" . 450" Valve Lift (mm) 11. 43 11. 43
