Triumph Racing Primary Crankcase Breather Stub By CBS Specs:1" X 16 TPI Trophy & TR6C) from 1968-1970

Trophy & TR6C) from 1968-1970 only

Trim measures 20" in length and 7/8" wide

Included in this kit

UK Made Triumph Crankcase Front Breather Vent Pipe

This is also known as the "oval style" rubbers with no logo

Triumph Racing Primary Crankcase Breather Stub By CBS Specs:1" X 16 TPI Trophy & TR6C) from 1968-1970A popular racing mod back in the day on pre 1970 Triumph 350, 500 and 650 unit twins was to allow the engine to breathe through the primary side case. Models from 1970 and on already featured this design however, pre 1970 models did not. If your engine features the timed inlet cam breather and you would like the engine to breathe through the primary you would have to drill (3) small holes near the bearing housing I won't get into detail regarding the