420 Primary Drive Sealed X-Ring Replacement Chain | Surron Ultra Bee RonixMods Black Carbon rollers

Black Carbon rollers

HUSQVARNA TE 250 (Braktec caliper) 2023

3MM Thick gives the rotor more surface area for the heat to dissipate which causes less brake fade

🔋 13kW continuous / 26kW peak power

Approximately 2x stronger than titanium

420 Primary Drive Sealed X-Ring Replacement Chain | Surron Ultra Bee RonixMods Black Carbon rollers420 Primary Drive Sealed X Ring Replacement Chain Sur Ron Ultra Bee Replacement 420 sealed X ring chain designed specifically for use with DirtyBike primary belt to chain conversion kits for Sur Ron Ultra Bee. Built to handle the demands of electric drivetrains, the X ring design reduces friction while retaining lubrication for consistent, long service life. This chain is a direct fit for DirtyBike 420 primary conversion kits for the Ultra Bee. Key