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BC0983 - 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


$ 799.00