• OS Giken Super Lock Limited Slip Differential | 1985-1992 BMW M3 E30 (BM091-HA)
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OS Giken Super Lock Limited Slip Differential | 1985-1992 BMW M3 E30 (BM091-HA)

OS Giken Super Lock Limited Slip Differential | 1985-1992 BMW M3 E30 (BM091-HA)

BM091-HA

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$1,466.67 USD
$1,650.00 USD $1,466.67 USD
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The OS Giken Super Lock Limited Slip Differential is a high-performance drivetrain component designed for the 1985-1992 BMW M3 E30. Engineered with over four years of research, this LSD features an innovative design that accommodates up to 28 friction plates, providing exceptional locking capabilities. Its patented lock timing system ensures a progressive, smooth, and quiet lock-up, enhancing handling precision and driver confidence. The Super Lock LSD delivers quick, consistent lap times and repeatable tuning, making it ideal for both track and spirited driving. Constructed with durable materials and advanced friction plate technology, it offers reliable performance under demanding conditions.

This limited slip differential is a direct replacement for the original unit in compatible BMW E30 M3 models from 1985 to 1992. It is specifically designed for rear-wheel-drive configurations and is suitable for street, track, or racing applications where enhanced traction and cornering performance are desired. Installation involves replacing the stock differential with this bolt-on upgrade, ensuring a secure fit and optimal function. The kit includes the LSD assembly and necessary components for installation. It is recommended for enthusiasts seeking improved handling dynamics and consistent power transfer during aggressive driving or competitive motorsport events.

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

  • 1985 - 1992 BMW M3 (E30)

What's In The Box?

  • 1 - Super Lock LSD 

Warranty

  • Manufacturer's Warranty
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