SHIBATA & R31 HOUSE IDLER GEAR 28T (GRK5 OPTINAL GEAR)(R31S101)
(GRK5RCV) Optional idler gear with 48 pitch/28 teeth for the triple idler system of the GRK5-R conversion kit.
By replacing only the upper gear with this product, you can accommodate small pinion gears from 24T to 17T that cannot be accommodated with the standard 24T idler gear