Motor Kits
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RZR 800 Stage 1 Head work
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rzr port

Stage 1 head work includes porting to specs and reshaping the stock valves seats to blend with the port. Dramatically less turbulent flow with short side radius improvements and valve seat matching.

RZR 800 Stage 2 Head Work
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rzr_head01
Best flowing and performing RZR head on the market.
This kit starts with CNC porting and includes new valve seats to make room for the +2mm oversized valves. Stage 2 provides faster, sharper throttle response and better overall performance. We also throw in a new heavy duty racing valve spring kit for added reliability.

RZR 800 Stage 1 Motor Kit - 80mm
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rzr_stage1_motor

This kit starts with CNC head work matched with +2mm valves. We then supply 80mm pistons, a 1.7 ratio Billet roller rocker arms for more valve lift, and a top end gasket kit. To get the machine breathing better we include our 46mm Billet throttle body with manifold and then supply an EPI adjustable arm clutch kit to get the power to the ground. Head Exchange required.

RZR 800 Stage 2 Motor Kit - 82mm
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rzr_stage2_motor
Get more horsepower out of your RZR with our Stage 2 motor kit.

This kit starts with Stage 2 head work. We then supply 12:1 CP pistons, a 1.7 ratio Billet roller rocker arms for more valve lift, and a top end gasket kit. To get the machine breathing better we include our 46mm Billet throttle body with manifold and then supply an EPI adjustable arm clutch kit to get the power to the ground. We also throw in an oil pressure relief valve. HUGE power gains! Head Exhange required.

RZR 800 Stage 3 Motor Kit - 85mm
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rzr_stage2_motor

This kit starts with Stage 2 CNC head work which includes a billet cam, +2mm valves, and a Kibblewhite heavy duty valve spring kit. We then supply our Billet Cylinder with 85mm CP pistons, Billet roller rocker arms for more valve lift, and a top end gasket kit. Taking advantage of the larger displacement is a 54mm billet throttle body. An EPI adjustable arm clutch kit to get the power to the ground. Head Exhange required.

RZR 800 Stage 4 Motor Kit - 85mm + 4mm Stroker
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rzr_stage2_motor
The ultimate RZR motor kit for those wanting to keep it naturally aspirated.

This kit includes everything in the Stage 3 kit and we add an Crank Works +4mm stroker crankshaft as well as a ARP style stud kit.

RZR 870cc WKR Billet Big Bore Cylinder Kit - 85mm
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rzr_870_motor1
Huge Bolt-on Performance Gain!

This kit kicks it up to a new billet cylinder with steel sleeves that are punched out to 85.00mm. We then supply new high performance CP pistons, solid lifters, adjustable push rods and a top-end gasket kit. We finish the kit off with an ARP stud kit. Top ends are available for stock stroke, 4mm stroke, and Turbo applications.

RZR 913cc Big Bore Stroker Kit
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rzr_billet_cylinder_kit

In addition to the 870cc top-end, we add a +4mm stroker crankshaft, billet WebCamshaft with lifters and pushrods and finish it off with a gasket kit. Add the fully ported, big-valve Stage 2 Head for the Ultimate BadAss RZR