They are brand new con rods for Royal Enfield twins and are part number 41719. These con rods have been remanufactured for a number of Royal Enfield twins. They’ve been made locally in the UK and NC machined from billet 7075-TG aluminium. Given that even the newest big twins will be 40 years old and their parts inside may be even a year or two older, the consequences of a rod ‘letting go’ don’t bear thinking about. Play for safety by up-grading to something that is considerably stronger than the original forged rods.
Sold as a matched pair, they are slightly heavier than the originals and will require rebalancing of the crankshaft assembly – to 72%. The set includes new and stronger big end bolts which need torquing to 38-40lb-ft.
Sold as a matched pair, they cost £280 plus VAT.