ALL BALLS Rear Independent Suspension Bearing Kit for POLARIS SPORTSMAN 850, SPORTSMAN 850 FOREST, SPORTSMAN 850 TOURING SP

ALL BALLS offers this engine bearing for POLARIS SPORTSMAN 850, SPORTSMAN 850 FOREST, SPORTSMAN 850 TOURING SP, SPORTSMAN 850 TOURING XP 2012-2015. The engine’s shafts run on ball or roller bearings in the cases. They carry heavy loads at high revs and eventually develop play.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

Why choose ALL BALLS?

Complete All Balls kits: low-friction bearings and steel-spring nitrile seals, everything you need in one box.

When should you replace the bearings on your POLARIS SPORTSMAN 850 FOREST?

On competition bikes the main bearings are replaced at every bottom-end rebuild, at the hours recommended by the manufacturer. With the cases open, spin each bearing by hand: the slightest rough spot means it must go.

Specifications and fitting tips

• Manufacturer part number: 50-1137

Cross-Mania tip: Heat the cases to remove and fit the bearings without forcing them, and replace the oil seals at the same time.

Also needed with this part

• 4-stroke engine oil : MOTUL 10W50 · LIQUI MOLY 10W40 1 L

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
POLARIS SPORTSMAN 850 2015
POLARIS SPORTSMAN 850 FOREST 2015
POLARIS SPORTSMAN 850 FOREST 2014
POLARIS SPORTSMAN 850 FOREST 2013
POLARIS SPORTSMAN 850 FOREST 2012
POLARIS SPORTSMAN 850 TOURING SP 2015
POLARIS SPORTSMAN 850 TOURING XP 2014