Hot Racing SSLF125 Steel Differential Spool Locker - Tra 4X4 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 SSLF125; UPC 083745631395 This item works with: Traxxas Rally VXL, LCG Slash 1:10, Slash 4x4 all versions, Stampede 4x4 VXL, Telluride 4X4 trail rig