PIVOT WORKS swingarm bearing kit for YAMAHA WRF 250, WRF 400, YZ 125, YZ 250, YZF 426 1999-2001

PIVOT WORKS offers this swingarm bearing kit for YAMAHA WRF 250, WRF 400, YZ 125, YZ 250, YZF 426 1999-2001. The swingarm pivots on needle bearings protected by seals. Water and mud make them seize: the suspension gets stiff and play appears.

What is this bearing made of?

Races and balls in hardened chrome steel, 100Cr6 type, very hard and fatigue-resistant, protected by rubber seals.

• Double seal (2RS): a seal on each side, very well sealed against water and mud, essential off-road.
• Limit: slightly more drag than a metal-shielded bearing (ZZ), which spins more freely but seals far less well.
• Fitting: press or drift it in on the outer race, never hammer on the seal; keep the pressure washer away from the hubs.

When should you replace this part?

Side play when you rock the swingarm with the rear wheel removed, or a notchy movement: the bearings need changing.

Specifications and fitting tips

• Manufacturer part number: PWSAK-Y07-421

Cross-Mania tip: Press out the old bearings, grease the new ones and check the swingarm pivot: if it is marked, replace it too.

Also needed with this part

• Grease : MOTUL 400 g 108664 · MOTUL 400 g 108672

Compatibility

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

Fits:
YAMAHA WRF 250 2001
YAMAHA WRF 400 2000
YAMAHA WRF 400 1999
YAMAHA WRF 426 2001
YAMAHA YZ 125 2001
YAMAHA YZ 125 2000
YAMAHA YZ 125 1999
YAMAHA YZ 250 2001
YAMAHA YZ 250 2000
YAMAHA YZ 250 1999
YAMAHA YZF 250 2001
YAMAHA YZF 400 1999
YAMAHA YZF 426 2001
YAMAHA YZF 426 2000