Restore smooth shifting and crisp deceleration to your Polaris machine! This Premium Primary Clutch Needle Bearing is engineered to precisely match original Polaris factory specifications under part number 1521172. Located at the center of the primary drive clutch, this bearing allows the drive belt to ride smoothly on the shaft without engaging when the engine is idling. Machined from high-grade, heat-treated bearing steel, it handles extreme RPM shifts and heavy torque loads easily. Ideal for replacing worn units that cause vehicle creeping at a standstill, hard gear shifting, or clutch housing noise.
Visual Check: Before installation, perform a visual check. Match the inner diameter, outer diameter, and width of the needle cage against your stock unit.
Clutch Tools Needed: Removing and rebuilding the primary clutch requires a specialized clutch puller tool and a spider removal fixture. Never hammer on the aluminum clutch faces.
Proper Lubrication: Apply only a micro-thin layer of high-temperature, specialty CVT clutch grease to the rollers. Excess grease will sling outward onto the clutch sheaves, causing catastrophic belt slippage. Always torque the main clutch bolt to exact factory specifications.
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