Stage 4 RZR Head rzr Offset fin on both water

Offset fin on both water and air sides of the core for rapid heat transfer

including Turbo Max and Turbo R

Redeeming this coupon entitles you to a generous credit that can be applied towards our exceptional engine building services and precision machining

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

Stage 4 RZR Head rzr Offset fin on both waterStage 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