Hot Racing TSMT13T Losi 13 Tooth Titanium Pinion Gear 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 TSMT13T; UPC 083745354317 This item works with: Losi 1:18 Late Model, 1:18 Mini LST, 1:18 Mini Slider, 1:18 Mini-Rock Crawler RTR, 1:18 Mini-T