RPM #73275 Blue ESC Cage for the Castle Sidewinder 3 & Sidewinder SCT (fits most Traxxas 1:10 scale vehicles) The upgrade part fits generally to most RC cars and trucks. It is made of alluminum which is ligher and stronger which enhances the performance of your RC cars greatly RPM Sidewinder 3 / SCT ESC Cage Blue For Traxxas Bandit Rally Rustler Slash Stampede #73275 Description: This is an optional RPM Traxxas Sidewinder 3/SCT ESC Cage. This RPM ESC Cage is compatible with the Castle Sidewinder 3 & Sidewinder SCT ESC's and was designed to fit the stock ESC location on the Traxxas Slash 2wd, Slash 2wd LCG, Slash 4??4, Slash 4??4 LCG, Stampede 4??4 & Rally. Additionally, it is also compatible with other Traxxas... more details below It takes 5 to 10 business days to arrive by standard airmail shipping. Most packages are packed and shiped within 12 hours. Expediated shipping is shipped by DHL or EMS. Packages will arrive in about 2-4 days.