Redcat Racing Dogbone, Front, 3.5 x 98.3mm Dogbane, Front (3.5*98.3mm) Genuine Redcat Racing Spare Parts Redcat Racing Part Number BS904-009 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.