High quality 817M40 forged steel conrod set. Lightweight 6" long Cooper 'S' conrod ONLY FOR USE with special race pistons using 18mm gudgeon pins. Conrod weight 450g. Bolts used are ARP 2000 bolts available as
C-AEG518. Manufactured in the UK by Arrow Precision Engineering to correct lightest safe weight for rod stresses. On web site Click on "Articles" on the Home page then under Technical information click on "Engine section" for "which con rod is best"---these should contain instructions on con rod bolt torque settings which are done by the safer method of "bolt stretch" do not torque as per workshop manual on these special rods