

RD6004
Transform your Mitsubishi Lancer Evolution VII, VIII, IX, X by converting the Active Center Differential (ACD) to a fully locked, 100% mechanical setup. RacingDiffs Block Discs deliver instant, even torque to front and rear axles—ideal for drag racing and high-power launches (tested on 1000+ HP builds).
Direct fit to the OEM ACD unit. No machining or permanent modifications required.
Tip: If you daily the car, keep both sets handy—OEM plates for street, Block Discs for race days.
Cross-reference (for identification/compatibility):
If you want to keep the ACD active and improve performance, explore our Mitsubishi drivetrain parts here: Mitsubishi ACD/AYC Upgrades.
Motorsport use note: A 100% locked center differential is intended for straight-line performance. For mixed street/track, consider swapping clutch plates after events.