Polaris RZR Pro S Sport Premium Ultimate Big Turbo Engine Rebuild Kit 300+ HP Upgrade 2025-2026

Description

RZR Pro S Big Turbo Engine Rebuild Kit

For 2025-2026 Polaris RZR Pro S Sport, Premium, and Ultimate models, this 300+ HP Upgrade package brings together a new crankshaft assembly, BC H-beam connecting rods, reinforced forged high boost pistons, and the supporting components specified for this engine build.

REV6 master engine technicians design and assemble our rebuild kits around the specified components, keeping the major rotating, timing, bearing, gasket, and sealing parts together in one package.

What This Kit Includes

• New Crankshaft Assembly
• New BC H-Beam Connecting Rods
• New Reinforced Forged High Boost Pistons
• Timing Chain
• Main Bearings
• Complete Gasket Kit
• Complete Seal Kit
• High-Temp Valve Stem Seals

Crankshaft, BC Rods and Forged Pistons

The rotating components include a new crankshaft assembly, new BC H-beam connecting rods, and new reinforced forged high boost pistons. The kit also supplies the timing chain and main bearings for the rebuild.

Compare the RZR Pro S Complete Big Turbo Kit

If your build also requires the cylinder and head stud components, compare the Polaris RZR Pro S Big Turbo Complete Engine Rebuild Kit 300+ HP Upgrade. That package adds a new nickel-plated cylinder and head studs kit to the verified component list.

Related Polaris RZR Pro S Rebuild Parts

You can also compare the Polaris RZR Pro S Complete Crankshaft and Rod Kit and Polaris RZR Pro S BC Pistons and Rods Kit when your rebuild calls for a different parts package.

Piston and Ring Installation Resources

For additional rebuild guidance, review the REV6 piston and ring installation guide. If piston rings are part of your assembly work, use the REV6 ring gap guide before installation.

Questions About Your RZR Pro S Build?

REV6 backs this kit with a 1-year parts warranty. For help confirming fitment or comparing engine rebuild parts for your 2025-2026 Polaris RZR Pro S, contact REV6.