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We test before we recommend.
PRODUCT DESCRIPTION
RacingDiffs Progressive Limited Slip Differential Conversion Kit: The Ultimate Solution for Superior Grip in Volvo
Say goodbye to wheel spin and embrace exceptional grip with the RacingDiffs Progressive Limited Slip Differential Conversion Kit. This kit is compatible with Dana 30 differentials found in Volvo 140, 240, 740, and 940 models (1030, 1031). Easily install this kit into your standard differential to convert it into a 25% locking clutch-type limited-slip differential.
Why Choose RacingDiffs Over Other Alternatives?
While you might find cheaper alternatives on platforms like eBay, RacingDiffs distinguishes itself for several reasons:
Uncompromising Material Quality:
Unlike other kits that compromise on quality, our plates are crafted from premium tool steel. They undergo rigorous heat treatment and nitriding processes to ensure unparalleled wear resistance. Furthermore, the inclusion of friction discs, made from the same high-quality material as our LSD clutch discs, effectively eliminates the issue of metal shavings – a common problem in budget LSD kits like the Phantom Grip.
Maximized Performance:
Our progressive LSD conversion kit is engineered for enhanced performance. Drawing inspiration from the design principles of acclaimed ZF-plated LSD units and ramp angles, we prioritize progressivity. The unique ramp angle design ensures a low preload while maintaining progressive locking capability. This means you'll enjoy the comfort of an open differential in slow corners or city driving, yet benefit from torque transfer to both wheels at high RPMs. Curious about the mechanics? Watch this video for a detailed explanation.
The RacingDiffs Difference
With our commitment to quality and performance, the RacingDiffs LSD conversion kit stands as the most advanced and reliable LSD kit on the market. Trust RacingDiffs for grip, durability, and top-tier performance.
*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.
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Only trusted manufacturers.
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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.