Pro Bike rear axle Upgrade 1/2" bearing/ Retainer KIT
These new UPGRADE KIT includes, qty 2 - 1/4" x 1/2" x 1/8" larger dia bearings , 2pk G10 bearing retainers, 4- 5/16 4-40 screws and 4 low profile nylon lock nuts along with 1 template guide plate you need to drill necessary new holes.Required tools to perform your upgrade - 3mm drill bit and Step drill bit that goes to 1/2" dia. Bolt on template plate to either side of rails and pre drill with NEW sharp drill bits slowly. Once the 1/2" dia holes is done use small round file to open hole a hair so bearing fits smoothly.
(See our You Tube Channel for how to Video)
This new upgrade bearing retainer helps decrease load from todays high performance motors and batteries such HV and graphine. Bearing is held by flange to reduce load on axle. Also makes for low cost repair when you blow a bearing it dosnt damage bike side rails.
This is a press fit part very tight tolerance for bearing so no play.