*New!* Excellent Quality English Made BSA Unit & Pre-Unit Twins Connecting Rod Nut Set. We always recommend when performing a rebuild to Replace the Connecting Nuts! Over time they become stressed and fatigued! This set of Four Nuts each have a 26 TPI Thread Pitch (CEI) & Measures 5/16"! Fits all BSA A50 & A65 models (Royal Star, A50, Lightning, Lightning Rocket, A65, Thunderbolt, Star, Wasp, Hornet, Spitfire & Firebird) from 1962-1972. Will also fit late 650 A10 Pre-Unit Twins (Road Rocket, Spitfire, Super Rocket, Etc) from 1958-1963 with the "Large Crankshaft Journals" only. Please refer to your parts catalog for proper fitment.
*****It is very important to measure the thread pitch of your application! Style of Nut may change from the photo due to different manufactures!*****
•Made in England
•O.E.M Part number is 67-1537, 37-1691, W1691, 75-6594, 68-0065 or 71-1957