Hot Racing SJT257 Steel Spur Gear (57t 0.8 Mod)(Red) - Traxxas Made by Hot Racing; Hot Racing is a United States based company; parts are sourced from Chinese producers All Hot Racing upgrade parts are direct replacements for stock components; additional parts are not required Hot Racing part number SJT257; UPC 083745465129 This item works with: Traxxas E-Revo 5603 5605 5608, Jato 2.5 and Jato 3.3, Summit, T-Maxx 3.3 4909