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Here is some reference information for wheel bearing replacement. There was a previous discussion on the front bearings HERE.
Several members have had what I would consider premature wheel bearing failures now, the causes are debatable, but this information should help for sourcing the replacement parts.
Here are the numbers for the All Balls kits courtesy of @OneLapper . The Alta uses the same rear bearings as KTM's with the smaller 20mm axle OD.
All Balls Rear Wheel Bearing Kit
All Balls Front Wheel Bearing Kit
These following bearing kits features Italian SKF bearings and seals. It also includes new hard anodized spacers which should perform significantly better than the OEM Alta/Warp 9 wheel spacers, unfortunately only the rear spacers are the same as KTM and can be used. The front spacers would not work for a stock Alta.
Inntech Rear Wheel Bearing and Seal Kits featuring SKF components
Inntech Front Wheel Bearing and Seal Kits featuring SKF components
The SKF seals in the Inntech kit have a floating outer seal that should drastically reduce grooving in the wheel spacers.
If you would like to source the SKF bearings and seals separately, here are the numbers;
SKF Rear Wheel Bearing for Altas
SKF Front Wheel Bearing for Altas
The rear wheel seals have an SKF # of WS108 and the front WS109, but I can't seem to find any web links for products, so more digging would be required to source those separately.
Hope this helps you all in the future.
Several members have had what I would consider premature wheel bearing failures now, the causes are debatable, but this information should help for sourcing the replacement parts.
Here are the numbers for the All Balls kits courtesy of @OneLapper . The Alta uses the same rear bearings as KTM's with the smaller 20mm axle OD.
All Balls Rear Wheel Bearing Kit
All Balls Front Wheel Bearing Kit
These following bearing kits features Italian SKF bearings and seals. It also includes new hard anodized spacers which should perform significantly better than the OEM Alta/Warp 9 wheel spacers, unfortunately only the rear spacers are the same as KTM and can be used. The front spacers would not work for a stock Alta.
Inntech Rear Wheel Bearing and Seal Kits featuring SKF components
Inntech Front Wheel Bearing and Seal Kits featuring SKF components
The SKF seals in the Inntech kit have a floating outer seal that should drastically reduce grooving in the wheel spacers.
If you would like to source the SKF bearings and seals separately, here are the numbers;
SKF Rear Wheel Bearing for Altas
SKF Front Wheel Bearing for Altas
The rear wheel seals have an SKF # of WS108 and the front WS109, but I can't seem to find any web links for products, so more digging would be required to source those separately.
Hope this helps you all in the future.