Features a 3/4" square Hole
Do not settle for knock off parts as the quality is not the same
If your looking for the most "Accurate" Throttle Assembly to install on your Dual Carb Twin then this is Exactly what you need
TR6 & TR6C) from 1968-1970
You will get the one bearing as pictured
Primary / Gear Box Slotted Inspection Caps (W/ O-Ring) - 57-2166 & 70-8782 54033234 Features a 3/4" square HoleNew UK Made Triumph & BSA Slotted Alloy Inspection Plug Screw With O Ring. This plug is great for engine, primary and gear box inspection holes! Comes with a nice finish but can easily polished to a mirror finish! Fits a wide range of Triumph Singles, Twins & Triples (Bonneville, T120, Tiger, TR6, T140, Trident, TR25W, Etc) all the way though the 1970's. Also fits many BSA Singles, Twins & Triples (Lightning, Hornet, B25, C25, B50, Rocket III, Victor,