Swig ARM repair KIT for -92 PIVOT WORKS for YAMAHA WR 250, WR 500, YZ 250, YZ 490 1988-1993

PIVOT WORKS offers this swingarm bearing kit for YAMAHA WR 250, WR 500, YZ 250, YZ 490 1988-1993. 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.

Why choose PIVOT WORKS?

Pivot Works kits, sold by the American All Balls Racing group, use hardened NTN, NSK or Koyo bearings from original-equipment bearing suppliers, supplied pre-greased with their seals; every kit carries the Pivot Works limited lifetime warranty.

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-Y10-020

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 : SHOWA 500 g · KYB

Compatibility

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

Fits:
YAMAHA WR 250 1993
YAMAHA WR 250 1992
YAMAHA WR 250 1991
YAMAHA WR 500 1993
YAMAHA WR 500 1992
YAMAHA YZ 250 1992
YAMAHA YZ 250 1991
YAMAHA YZ 250 1990
YAMAHA YZ 250 1989
YAMAHA YZ 250 1988
YAMAHA YZ 490 1988