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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
Transform your driving experience with RacingDiffs' progressive LSD conversion kit, expertly engineered to fit Ford Sierra non-LSD differentials and the sporty Ford Focus Mk1 ST, as well as a variety of kit cars, including Super 7, MK Indy, Westfield, Striker, and Locost chassis.
Say goodbye to wheelspin! Our progressive LSD conversion kit effortlessly upgrades your standard differential to a 25% locking clutch-type limited slip differential, revolutionizing grip and handling dynamics.
What makes RacingDiffs different?
Plug & Play Convenience: Our NEW easy-fit version integrates seamlessly with your vehicle, requiring no modifications for a straightforward and intuitive installation.
Unrivaled Material Quality: Comprised of high-grade tool steel, with heat-treated and nitrided components, our plates demonstrate exceptional wear resistance, superior to common alternatives.
Progressive Performance: Thanks to the ramp angle design of ZF plate LSD units, our kit ensures low preload and gradual lock-up, maximizing torque transfer under high loads for a refined driving experience.
With these enhancements, we can confidently state that RacingDiffs' LSD conversion kit is the most advanced on the market.
RacingDiffs LSD Conversion Kit for Ford
Key Advantages:
Compatibility: Engineered to sync with Ford Sierra, Focus Mk1 ST, and diverse kit cars, ensuring application versatility and performance enhancement.
Performance Focus: Equipped to dramatically mitigate single-wheel spin, endowing your vehicle with the robustness of a true limited-slip differential.
Comprehensive Kit: Includes all essential components for a straightforward and efficient installation.
Experience driving innovation with the RacingDiffs LSD Conversion Kit and unleash the full performance potential of your Ford Sierra, Focus Mk1 ST, or kit car, guaranteeing an optimized and progressive driving experience that will exceed all expectations.
Note: The product appearance may vary slightly due to continuous improvements. Please refer to the product image for a more accurate representation.










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
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We test before we recommend.
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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
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
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.