Hot Racing Losi Ten SCTE Ten T Nitro Mod 1 40t Steel Spur Gear SCTE40SM1 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 SCTE40SM1; UPC 083745802627 This item works with: Losi 1:10 SCTE short course, 1:10 TEN-T Nitro Truggy RTR