Stage 4 RZR Head rzr A must for upgrading your

A must for upgrading your AMG M157's engine and pairs with any Darton MID Sleeved Block

and turbo upgrades

meticulously performed by our expert technicians in multiple phases

this is a must have for your next build if planned on increased power levels

Experience the ultimate off-road performance with the Can-Am X3 Stage 3 Trail-Maxx Crate Engine

Stage 4 RZR Head rzr A must for upgrading yourStage 4 Big Valve REQUIRES CORE CYLINDER HEAD CNC Ported Runners & Chambers Bronze valve guides honed to precise tolerances Performance Newen 5 Angle Radius Valve seat profiles Surfaced to single digit Ra's Assembled and blueprinted Hardware Included: BC Intake and Exhaust (inconel) Valves BC Beehive Spring kit with chromoly retainers New Valve Seals New Valve Locks