• OS Giken Super Lock LSD, front for Subaru Impreza WRX STI GD and GR EJ25
1 1

OS Giken

OS Giken Super Lock LSD, front for Subaru Impreza WRX STI GD and GR EJ25

OS Giken Super Lock LSD, front for Subaru Impreza WRX STI GD and GR EJ25

SKU: SB041-HA01
£1,515.80
£1,515.80
Sale Sold out
Taxes included. Shipping calculated at checkout.

A front Super Lock limited slip differential for the Subaru Impreza WRX STI GD and GR with the EJ25 engine. It has 3/50 ramp angles, 336 lock timing, 18 plates and 10S preload.

  • All components chemically heat treated
  • Components made from high-grade steel alloy
  • Raw-forged gears
  • Case machined from a single billet

Fitment

Make Model Chassis Engine Years
Subaru Impreza WRX STI (Front differential) GD / GR EJ25

Specifications

Ramp angles 3/50
Lock timing 336
Total plates 18
Preload 10S
Made by OS Giken, Japan
OS Giken part number SB041-HA01

Fitting notes

  • Fit as per the manufacturer's service manual.
  • Initial torque can be adjusted with thicker or thinner cone springs.
  • TCD-spec discs can be fitted for extra oil cooling and smoother operation.
  • Front differential. For the rear, see SB041-HA.

Lead time: made to order by OS Giken in Japan, usually 2 to 3 weeks. Contact us if you need it sooner or want us to check fitment.

View full details