Redcat Racing Universal Driven Dogbone 2P Vehicle Redcat Racing Universal Driven Dogbone 2P Genuine Redcat Racing Spare Parts Redcat Racing Part Number 18120 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.