All Balls Crank Shaft Bearing Kit, BETA 23 RR 350 4S/RR 390 4S/RR 430 4S/RR 480 4S, 21-22 RR 350 4T EFI/RR 390 4T EFI/RR 430 4T EFI/RR 480 4T EFI, 11-19 RR 350 4T Enduro, 20 RR 350 4T/RR 390 4T/RR 430 4T/RR 480 4T, 15-19 RR 390 4T Enduro/RR 430 4T Enduro

All Balls has a lot of technology and engineering packed into their Crankshaft Bearing and Seal Kit.
Technology like the carbon/fluorocarbon pad on the lip face of the seal and the stainless steel garter spring that helps form a tight seal around the ends of your crankshaft.
The bearings themselves are Japanese made by the Koyo and Nachi companies for outstanding quality.
With the All Balls Crankshaft Bearing and Seal Kit in your bike your crankshaft will turn smooth and true for hours of riding.

Specs:
Includes crankshaft bearings and seals
Seal features carbon/fluorocarbon pad on the lip face and a stainless steel garter spring for enhanced dry-start performance and wear resistance
Bearings made in Japan by the Koyo and Nachi manufacturing companies