MCB Polaris 850 Axys, Patriot, Matryx, VR1, Assault, RMK, 2019-2024 Top End Piston Rebuild Kit with Cylinder conversion to 9R

GENUINE MCB 850 to 9R conversion kit. If you have a 2019-2024 Polaris 850 and are looking to take it to the next level, the MCB 9R conversion kit is a simple bolt on process. All parts are OEM Polaris and are a direct bolt on. This is a great purchase if you are having to rebuild your top end, you might as well make it the higher HP faster revving 9R version.

- Factory Polaris 9R cylinder
- (2) Factory Polaris 9R pistons with Ceramic coating of the domes, including rings, circlips and wrist pins.
- Factory Polaris 9R Y-pipe
- Factory Polaris 850 Flywheel modified to the 9R lightweight version (requires a core)
- Full engine gasket set (optional top end or with crank seals at checkout)
- All 4 power valves (upper and lower) Factory Polaris
- Tool for modifying the 850 pipe outlet at silencer to the 9R diameter. (not shown in the photo)
- Requires you to take your machine to a Polaris dealer or anyone with digital wrench and have the 9R fuel map installed to the ECU.
- Instructions for assembly with torque values.