• OS Giken Rear Super Lock Limited Slip Differential | 2004-2014 Subaru WRX STi GD/GR (SB041-HA)
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OS Giken Rear Super Lock Limited Slip Differential | 2004-2014 Subaru WRX STi GD/GR (SB041-HA)

OS Giken Rear Super Lock Limited Slip Differential | 2004-2014 Subaru WRX STi GD/GR (SB041-HA)

SB041-HA

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$1,288.89 USD
$1,450.00 USD $1,288.89 USD
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The OS Giken Rear Super Lock Limited Slip Differential is a high-performance limited slip device designed for the 2004-2014 Subaru WRX STi GD/GR models. Engineered with over four years of dedicated research, this LSD features an innovative design that accommodates up to 28 friction plates, providing exceptional locking capability. Its patented lock timing system ensures a progressive, smooth, and quiet lock, enhancing handling precision and driver confidence. The Super Lock LSD delivers quick lap times and consistent performance, making it ideal for both track days and spirited driving. Constructed with durable materials and advanced friction plate technology, this differential offers improved traction and stability during aggressive cornering and high-stress conditions.

This limited slip differential is a direct replacement for the rear differential in compatible Subaru WRX STi GD/GR models from 2004 to 2014. It is suitable for street, track, and performance driving applications where enhanced traction and quick response are desired. Installation involves replacing the existing differential with this bolt-on upgrade, providing a straightforward upgrade path for enthusiasts seeking improved handling. The kit includes the Super Lock LSD assembly, ensuring a comprehensive upgrade for optimal performance. Compatibility is specific to the specified model years and chassis, making it an ideal choice for those aiming to maximize their vehicle’s cornering capabilities and overall driving dynamics.

Overview

Super Lock Limited Slip Differential by OS Giken

The OS Super Lock LSD is the culmination of over four years of extensive research and development leading to a revolutionary LSD design. With the capacity to house an unprecedented number of friction plates (up to 28 plates in total) and combined with our patented lock timing system, the Super Lock LSD is able to achieve complete lock in a progressive, smooth, and quiet manner. This effort translates to quick lap times and repeatable tuning and performance.

Features

  • Miniaturized pressure ring and a superior spline-through-side-gear design allows for fitment of more friction plates (up to 2x as many as competitors versions), offering true 100% lock capability.
  • Patented pressure ring design allows for smooth, progressive locking.
  • LSD case has a relief cut-out for the cone spring, resulting in minimal cone spring degradation and enhanced durability.
  • All components are chemically heat treated for maximum durability
  • LSD case is machined from a single billet piece to ensure uniformity.
  • Initial torque can be adjusted by using thicker / thinner cone springs
  • Lock progression timing can be adjusted by using stiffer / weaker pressure ring springs, allowing the progression of full lock to be fine-tuned to the vehicle/driver.
  • Ramp angles can be customized by swapping the pressure ring and iron cross for even more tuning possibilities.
  • TCD spec disks can be installed for increased oil cooling and even smoother operation.

Applications

  • 2004 - 2014 Subaru Impreza WRX STi (GD/GR)

What's In The Box?

  • 1 - Super Lock LSD (Rear)

Warranty

  • Manufacturer's Warranty
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