Swingarm bearing kit components including needle bearings, pins, collars, washers, and dust seals for Yamaha YZ and WR.

Exploded view of a motorcycle swingarm assembly showing needle bearings, collars, seals, and pivot components from a swingarm rebuild kit.

Factory Links full-complement drawn-cup needle bearing designed for high shock and oscillating loads

Swingarm Bearing Kit for Yamaha YZ and WR Motorcycles | SAK-Y-275

$95.00

Quantity

Restore smooth suspension movement and long-term durability with Factory Links Swingarm Bearing Kits for Yamaha YZ and WR off-road motorcycles, engineered for OEM-quality fit and performance in off-road riding conditions.

Each kit includes all required needle bearings, collars, pins, and dust seals for a complete swingarm service. Components are manufactured to meet stringent OEM standards for material quality, dimensional tolerance, hardness, and surface finish—ensuring proper load distribution and consistent suspension movement.

Designed to withstand contamination, shock loads, and continuous motion, Factory Links Swingarm Bearing Kits help return your motorcycle’s rear suspension to proper operating condition, improving handling feel, reliability, and service life.

Our kits will bring your bike swing arm back to its former condition as defined by manufacturers.

Information

Factory Links Swingarm Bearing Kits are designed as complete OEM-quality replacement solutions for motorcycle rear suspension systems.

Each kit contains all swingarm pivot bearings and related components required for a proper service, eliminating the need to reuse worn or contaminated parts. Needle bearings, sleeves, and seals are precision-manufactured to ensure correct clearance, smooth articulation, and long-term durability under off-road riding conditions.

Proper swingarm bearing function is critical for maintaining rear suspension alignment, consistent shock performance, and predictable handling. Replacing worn components helps reduce binding, uneven wear, and premature suspension fatigue.

Technical details

HEAVY DUTY THRUST NEEDLE BEARINGS

Heavy duty thrust needle bearings handle much larger radial and thrust loads. Unlike cheaper solution as POM, they also provide a much lower coefficient of friction between the swing arm and frame.

PINS

Pins are precision-turned, induction-hardened, and polished to meet manufacturer-specified tolerances. Manufactured from SAE 52100 high-grade bearing steel, each pin is heat-treated to exceed 60 HRC, with the raceway precision-ground to ensure consistent fit, wear resistance, and long-term durability.

COLLARS

Collars are precision-turned and polished, then heat-treated to 48 HRC in accordance with OEM hardness specifications. Manufactured from automotive-grade SPCC steel, each collar is zinc-plated to provide corrosion resistance and maintain dimensional stability over extended service life.

DUST SEALS

Dust seals are molded from Nitrile Butadiene Rubber (NBR) in accordance with OEM material and dimensional specifications. Designed to exclude abrasive debris, moisture, and contaminants, they help protect bearing surfaces and maintain consistent performance throughout the service interval.

HEAVY-DUTY NEEDLE BEARINGS

Heavy-duty needle bearings are full-complement, drawn-cup designs manufactured from induction-hardened SPCC steel. Internal clearances are specified to accommodate high shock loads and oscillating motion typical of off-road motorcycle chassis applications, ensuring durability and consistent performance under severe service conditions.

Fitment

Kit / Fitment	Swing Arm Bearing kit
Manufacturer	YAMAHA
Model	WR 250 F (2002-2005) WR 426 F (2002-2002) WR 450 F (2003-2005) YZ 125 (2002-2004) YZ 250 (2002-2015) YZ 250 F (2002-2006) YZ 426 F (2002-2002) YZ 450 F (2003-2005)

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Swingarm Bearing Kit for Yamaha YZ and WR Motorcycles | SAK-Y-275

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