1990 YFM350 VIN JY43HPW05L00xxxxx

[ranchhelper]

The kits for that year range, have both bearings but only have 1 seal. The other seal is not available, not from Partzilla. I will compare the measurements above, with the two bearings and one seal. If they match, I'll find the remaining seal that matches those measurements and post my results.

[Gwbarm]

Thats strange that they would have the bearing and not the seal, probably because the bearing fits other newer bikes and the seal does not, so they discontinued it. That happens alot ,discintinuing items that are specific to that bike only.

[ranchhelper]

The kit arrived. It is the All Balls Racing rear axle kit. It currently sells under $50. Comes with both bearings and both seals, although whatever photos you see online, do not show both seals, they only show one seal.

I used the digital calipers, and the measurements of the bearings, and the seals, are exactly as described in the previous post. The kit is found by searching for YAMAHA 87-95 YFM350 BIG BEAR.

The ALL BALLS part # AB251010. Detail on lablel calls it 'Wheel Bearing Kit Rear Yamaha YFM250 Moto-4 89-91, YFM350ER Moto-4 87-95, YFM350FW 87-95.'

The larger bearing has no seal. The smaller bearing is sealed.

[Gwbarm]

Thats good you found it, i have used all balls parts and have been very happy with them.I think Moto 4 and Big Bear share a lot of parts.