The Mazda RX8 is loved for its handling and performance, but its factory Super Limited Slip Differential (LSD) suffers from a major flaw. Behind the spider gears are small friction cones, pushed by weak springs. These cones are the OEM LSD’s weak point, often breaking or wearing out even on low-mileage cars. The result? Reduced traction, inconsistent performance, and early failure.
RacingDiffs has developed a precision-engineered upgrade kit specifically for the Mazda RX8 Super LSD. This kit is not compatible with the MX5 NB/NC Fuji LSD, as it is tailored to the RX8’s unique dimensions for a perfect fit and maximum performance.
The upgrade replaces the fragile friction cones with high-performance clutches and preload shims for increased stopping force. We also include 4x stronger springs to drastically improve locking power. The result is up to 4x better performance and far greater durability compared to the factory LSD.
Key Features:
Designed specifically for the Mazda RX8 Super LSD (will not fit MX5 Fuji LSD).
Replaces weak friction cones with high-quality clutches.
Includes 4x stronger springs for maximum locking power.
Preload shims improve traction and cornering stability.
Eliminates OEM LSD failures, even on low-mileage cars.
Ideal for both spirited street driving and track use.
Perfect for: Mazda RX8 owners looking to fix the common OEM LSD problem while upgrading performance for better grip, control, and reliability.
SHIPPING
The package will be sent within 1 - 3 working days from the moment of full payment.
The tracking number will be sent immediately.
The expected delivery date depends on your location.
If you want a faster shipping method (we use DHL express service) please make sure you leave email and phone number when you purchase the item. Otherwise, we will have to send the package with a regular post office service which takes 3 times more to deliver it to your door.
We are not responsible for the customs taxes of your country, or the retention time of the customs check.
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REFUND POLICY
IF YOU ARE NOT 100% SATISFIED WITH YOUR PURCHASE, YOU CAN RETURN YOUR ORDER FOR A FULL REFUND (MINUS SHIPPING EXPENSES).
You can return your purchase for up to 45 days from the purchase date.
Returned products must be in the condition you received them and in the original box and/or packaging.
Return shipping costs will be paid by customer. Return should be realized through regular POST OFFICE exclusively. We won't accept other courier services. Please contact us before sending the package back to us.
Refund requests regarding to high import fees won't be accepted - please read Shipping info page before ordering.
For any additional information, we are here for you as always.
Your RacingDiffs team
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