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 brand you desire

Looks exactly like an original Lucas part but a fraction of the cost without sacrificing quality

Fits Triumph and BSA triples from 1968-1970

we highly recommend installing this quality clutch plate

57-4403 & T4403

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