BSA Pre-Unit Primary Chaincase Inspection Filler Cap 65-3364 A7 A10 B31 M20 M21 60-4125 Please use the drop down

Please use the drop down menu to select which parts you need - all parts are sold each as pictured

Bezel has a total of four tabs

which means there are no rivets to gouge your Brake Drum when the shoes start to wear

Please use the drop down menu to select which brand you desire

we highly recommend installing this quality clutch plate

BSA Pre-Unit Primary Chaincase Inspection Filler Cap 65-3364 A7 A10 B31 M20 M21 60-4125 Please use the drop down*Now In Stock!* New BSA Pre Unit Singles & Twins Primary Chaincase Inspection Alloy Cap. If your Missing your Inspection Cap and you need a Replacement to get back on the Road, then this is for you! Comes with a Nice Polished Finish but with some "Extra Buffing" on your part you can have a Mirror Finish! Thread Diameter is approx 1 1 2". Fits many A, B, C & M Group BSA Pre Unit Twins & Singles (C10, C11, C15, B40, A7, A10, B31, B32, B33, Etc) from the