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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
Why is the RacingDiffs LSD conversion kit the best choice compared to eBay alternatives?
When considering an LSD conversion kit, two main factors set RacingDiffs apart:
Unmatched material quality: Our plates are manufactured from premium tool steel, subjected to heat treatment and nitriding for unparalleled wear resistance. But we went further. We incorporated friction discs between the plates and the spider gears, made from the same exceptional material as our LSD clutch discs. This eliminates the problem of metal shavings, a common issue in budget kits like Phantom Grip.
Maximum performance with progressivity: Our progressive LSD conversion kit is inspired by ZF-style plate LSD units, featuring optimized ramp angles. This design achieves low preload while maintaining dynamic locking capability. Essentially, you will experience the ease of an open differential in slow corners, but with both wheels receiving torque under load. See this video for an illustration.
With these improvements, RacingDiffs positions itself as the most cutting-edge LSD kit on the market.
Features of our easy-fit version:
No machining of the spider gear required.
Includes all essential components for installation.
Compatibility: Fits a wide range of non-M BMW models. To find the right kit for your model, provide the last 7 digits of your VIN. Specific exceptions and notes are detailed below.
The kit is available for most non-M BMW models, such as:
1 Series: E81, E82, E87, E88, F20
3 Series: E30, E36, E46, E90, E91, E92, E93, F30
5 Series: E28, E34, E39, E60, E61, F10
6 Series: E63, E64
7 Series: E23, E32, E38, E65, E66, E67
X1: E84 (rear differential)
X3: E83 (rear differential)
X5: E53, E70 (rear differential)
Exceptions:
The Z4 and X3 have a 188L (168L) type differential, even though the catalog shows 188K (168K). All models manufactured after 2008 have 188LW, although the catalog indicates 188L.
The BMW E36 Compact manufactured in 2000 has 188K, even though the catalog indicates 188mm.
Important notes:
Before installation, inspect the inner surface of the small spider gears to ensure they are not damaged. If they are not smooth, they must be machined for optimal performance.
BMW models after 2008 have a ring gear welded to the carrier unit. For the installation of an aftermarket limited-slip differential (LSD), including RacingDiffs, this ring gear must be machined.
RacingDiffs recommends Motul Gear Competition 75w140 oil for all its products.
*Due to continuous product improvement, the product shown in the photo may vary slightly from the actual product.










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
01
We test before we recommend.
02
We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
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available products
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Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.