Pre Unit Triumph 4 speed gearbox rebuild kit 500 650

Pre Unit Triumph 4 speed gearbox rebuild kit 500 650Rebuilding a pre unit 4 speed gearbox may not be too hard, but getting all the correct wear parts together sometimes is . After rebuilding these gearboxes for years, I finally put together a kit of all the commonly replaced parts. This kit has most everything you need to get your Triumph pre unit four speed gearbox back into shape. This is for gearboxes from 1950 1960, which have bronze bushings to support the layshaft. If your pre unit gearbox has

and 60-3500 oil seal

This set is the highest quality available

TRIUMPH BSA OIL IN FRAME UNIT SUMP FILTER GASKET PAIR

High gear mainshaft output ball bearing for 4 speed Triumph

(This oil is for motorcycles and should not be confused with the 20w-50 PennGrade 1 automotive oil popular in the Porsche community

California

Order with Grant or Hastings cast piston rings or without rings

The larger diameter may not fit some early pre unit external drain pushrod tubes

032" thick replace Triumph part # 70-3552 or E3552

and all Pre Unit 650 iron head engines

This modern ring design is far superior than one piece designs

AFM PRE UNIT SUMP FILTER GASKET PAIR