Hot Racing SLF125X06 Aluminum Center One-Way Differential 4x4 Slash 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 SLF125X06; UPC 083745628418 This item works with: Traxxas Rally VXL, LCG Slash 1:10, Slash 4x4 all versions, Stampede 4x4 VXL