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Triumph BSA 500 650 750 Late Unit Twin Clutch Thrust Washer 1970-83 PN# 57-3931 STD T3931


Availability: In stock

SKU: 633726127500 Categories: , , , Tags: , OE Number: 57-3931 T3931Year: 1970-1983 Triumph twins. 1970-1972 BSA twins.Make: BSA A50 A65 A75 Triumph T100 TR6 TR7 T120 T140Model: BSA Triumph Brands:

The clutch thrust washer is important as it serves as a buffer between the splined clutch hub and the clutch sprocket, or “clutch basket”. Clutch thrust washers are prone to wear and distortion of the inner diameter due to the forces they are subjected to.

This reproduction thrust washer is constructed to the original dimensions and features a bronze bearing surface and steel backing, as specified by the factory for fitment to the 1970-1983 Triumph twins and 1970-1972 BSA twins. The ID of the washer is 2.014″, the OD is 2.625″, and it is .052″ thick. Made in the UK from LF Harris.

The thrust washer must be sufficiently thick to prevent the clutch hub from interfacing with the backside of the clutch sprocket. When fitted correctly, the bronze bearing side will face the clutch sprocket. It is recommended to replace the thrust washer if there is any doubt about its integrity.

The primary chaincase must be opened up, and the clutch assembly partially disassembled to access the clutch hub and thrust washer. Consult the workshop manual for more detailed instructions for this procedure.

We also stock a premium version of these click here

For clutch rollers click here

For pre 1970 Triumph twin clutch thrust washers click here

Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, thrust washers, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.



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