LEGO MOC Simpliest torque differential (limited slip) by MasterIT | Rebrickable - Build with LEGO
LEGO MOC Simple Diff Lock by lbrix | Rebrickable - Build with LEGO
Technic Motor - Brakes - LEGO® Technic Gear Differential with Inner Tabs - The shop Briques Passion
KonHaovF 116PCS Gear and Axle Set for Technic Parts Compatible with Lego Technic Parts, DIY Gears Assortment Pack((Gears Pins Axles Differential New)) for Technic Building Blocks Set(Random Color)