SURRON ULTRA BEE PRIMARY DRIVE CHAIN CONVERSION KIT – If you are breaking primary drive OEM belts in serious competition, then you have two alternative choices. The first option is to try our High Performance Kevlar reinforced Primary Drive belt as listed elsewhere on this site OR your second option is this primary drive chain conversion kit. It’s a simple to fit conversion which uses the existing front pulley keyway to allow the fitment of a new front drive 420 sprocket whilst the midshaft pulley is replaced with a sprocket that fits directly on to the midshaft as per the pulley with the 6 fixing bolts. We use a gold and black high performance DID 420 ‘O’ ring Race Chain with split link in place of the OEM drive belt.
As used by the Surron UK Team Rev Monkey race bikes.