Triumph Twins Primary Chain Adjuster Trunnions (1) - Choose Trunnion Type Layshaft Works with many BSA A7

Works with many BSA A7 & A10 Pre-Unit engines up to 1962

this Switch will save you Headaches

Every petcock for sale features removable filters

All parts fits Triumph 4-speed and 5-speed gear boxes (T120RV

this will also work for your application

Triumph Twins Primary Chain Adjuster Trunnions (1) - Choose Trunnion Type Layshaft Works with many BSA A7New Triumph twins primary chain adjuster trunnion. This trunnion will replace Triumph part numbers 70 4148, E4148, 70 5977 & E5977. Imported from England made in England. OEM quality We stock a few types of trunnions to fit Triumph 350, 500, and 650 unit construction models (3TA, 5TA, T90, T100, TR6, T120, etc). Check your parts book to ensure the best fitment. Please use the drop down menu to select which trunnion you need for your application