Just made a Limited Slip Differential proof of concept - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
Metal diff frame liftarm beam 5x7 open center like Lego 64179 – Metal Technic Parts
LEGO MOC Simple Diff Lock by lbrix | Rebrickable - Build with LEGO
Sariel.pl » Limited Slip Differential
Self-locking Brick Moc Building Blocks New Differential Gear Pack (pack Of 4 Complete Assemblies) Compatible With Major Brands - Model Building Kits - AliExpress