Get advice from our specialists to make sure you’re choosing the right part for your vehicle and setup.
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Get advice from our specialists to make sure you’re choosing the right part for your vehicle and setup.
The Wavetrac BMW 2002 E21 E30 LSD is a helical limited slip differential for the small-case 168mm BMW 2002, E21 and E30 models.
Wavetrac part number: 30.309.120WK
Fits: For small-case 168mm BMW 2002, E21 and E30 models.
Installation notes: Compatible with the OEM open differential (flange modification required, or use OEM LSD flanges). Compatible with the OEM LSD differential (OEM LSD flanges can be reused, but the OEM open differential case or side covers are required).
Wavetrac designed this differential from a clean sheet, so it brings current gear technology to the market. Internally, the gear tooth forms give more strength and better oil film retention than competitive designs. The gear package is also smaller, which reduces overall mass yet makes it more durable. In addition, Wavetrac put as much material as possible at the side gear and axle interface, because this area matters most when power levels get high.
The Wavetrac BMW 2002 E21 E30 unit uses patented technology that mitigates wheelspin when an unloaded wheel condition arises. In fact, it is the only torque-biasing differential on the market that does this. During zero axle load conditions, the Wavetrac cam device acts to create internal load. As a result, it maintains drive on the gripping wheel instead of acting like an open diff and going nowhere.
Wavetrac crafts each differential from the highest quality materials available. The internal gears use high-strength 9310 alloy steel, and the diff bodies come from case-hardened steel billet. To complete the package, every Wavetrac differential uses high-strength fasteners from ARP, the world leader in fasteners. Finally, all Wavetrac differentials include a transferable limited lifetime warranty.
The Wavetrac BMW 2002 E21 E30 LSD is a special order item, so please enquire for pricing and lead time. We can check the fitment against your VIN or rego number, and we can also fit the unit for you in our Christchurch workshop. Lead times vary by unit, so we quote each order fresh and confirm the delivery date with you before we order. Please note that special order parts may not be returnable.
