High strength Chrome moly steel big end bolts and nuts with rolled threads , made in USA by ARP the Worlds leading performance fastener company.
The bolts are a stretch type bolt and come with fitting instructions , big end bolts are a critical item and we only fit the best to our engine rebuilds .
Fits BSA A10 Large journal conrods and BSA A50 and A65 conrods up to 1971
Threads must be lubricated when fitting , do not use any Loctite thread locking compound or similar, kit comes with fitting instructions for torque stages and final setting.
Make sure conrod big housing is not oval or distorted before fitting these bolts , old conrods must be checked for correct sizing, please contact us if you need anymore info on checking conrod housings.