Redcat Racing Front/Rear Spur Gear Complete Front/Rear Spur Gear Complete; Fits Super Rock crawler RC Car Parts : RCL-T002 Genuine Redcat Racing Parts For troubleshooting and warranty information please contact a Redcat Racing Customer Service Specialist at 602-454-6445 or by emailing amazonsupport@redcatracing.com NOTE: Please read the User Manual before use.