Put ALL of your power on the pavement!  OS Giken's high-quality OS Super Lock Limited-Slip Differential is a progressive and fully-locking system that gives you ultimate performance and control. This extremely durable LSD has a revolutionary design that allows it to house an unprecedented number of friction plates. This is the preferred LSD by the fastest Lotus Challenge Series racers. 

Progressive & Fully Locking = Best Performance

• 12 friction plates
  • Stronger locking force
  • Machined on both sides simultaneously for tightest tolerances
  • Locks 100%
    • Generates less heat
    • Increased durability
• Patented pressure ring design
  • Progressive locking
    • Heightens control
    • Easier to throttle steer
    • Low locking preload
  • More compact allowing more space for friction plates

Best Materials & Construction = Super Durable

• Strong & compact pressure gears
  • Forged steel alloy
  • Heat treated for added durability
• Friction plates
  • Precisely machined steel alloy
  • Heat treated for added durability
• Outer housing
  • Billet steel alloy
  • Heat treated for added durability

Superb Engineering = Peace of Mind on the Street & Track

• No break-in period
• No rebuilds required

Model Compatibility:

• All Toyota powered Lotus
• C64 Toyota 6spd Transmission

 *Animated Explosion shows a slightly larger OS Super Lock model that is not compatible with C64 Toyota transmission.