MCB Stage 1 Polaris AXYS 850, Patriot 850 Matryx 850 VR1 Assault RMK Pro SB Indy 2019-2024 Top End Piston Rebuild Kit with Cylinder

GENUINE MCB Top end rebuild kit. If you have a 2019-2024 Polaris 850 and are looking for direct replacement cast piston or Premium dual ring forged pistons for a top-end rebuild, look no further. This kit includes Genuine MCB cast single ring (same as OEM) or optional at check out Premium Forged Dual Ring Piston set. In this kit we include a Original Polaris 850 cylinder and a Quality Gasket kit and seals (if selected) to complete your top-end service with confidence that parts are 100% correct and designed for your machine.

Important note: On this particular SKU# / purchase, because it includes a hard to find cylinder, we require your old cylinder core prior to shipping the order. In an absolute emergency the only exception we have to this rule is if pay a core fee of the MSRP ($1530.00) for the cylinder being purchased. Then when you return the core within 15 days, you will get the full MSRP ($1530.00) core fee refunded if your core is repairable. You must call in to arrange for this "special case" situation. Upon purchase we immediately pull the parts and hold them as yours, until the core arrives or you call in and pay the MSRP core fee. Cylinder cores cannot be
- Iron Sleeved
- Ported
- Have external engravings on them.
- Broken skirts and gasketed surface damage can be fixed in most cases, but at an extra charge that is TBD until we receive the core.