One-way bearing T-belt transmission pulley kit for Grubee 4-stroke 4G engine kits. Each kit includes a pulley wheel, one-way bearing, 2x bearing retaining clips, and the bearing key - available in 80 tooth, 90 tooth and 100 tooth options.
Note: one-way bearings are prone to failure under high stress like rapid acceleration or starting from a stop. We recommend welding the bearing solid to eliminate the possibility of a failure.
