Replacement for OEM # 57-0031

Black electroplated finish after welding for rugged good looks

and TR5T (Trophy Trail 500)

it threads into the fork tube and you crank it down

Primary Gasket for 1963-82 650/750 unit Triumph Motorcycles - Extra Thick OEM #71-7009 Subcategory_Hats Replacement for OEM # 57-0031Super thick, heavy duty primary gasket for your unit Triumph bike. My personal favorite is to smear some clean grease to burnish each side of the gasket and fit it without using gasket cement. That way you can pull your primary cover without the hassle of scraping and fitting a new gasket each time. The thick gasket conforms to the cover and case tightly, this isn't flimsy paper like most. Fits 1963 1982 unit Triumph 650 c. c. and 750 c. c.