Cusco Type RS Rear LSD 1.5-Way
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Cusco Type RS Rear LSD 1.5-Way - Mitsubishi Lancer Evolution X (CZ4A) - AYC Models
The Cusco Type RS rear LSD is a clutch-type limited slip differential for the rear diff of the Mitsubishi Lancer Evolution X (CZ4A) with AYC. It locks smoothly under power for better traction out of corners, and it is the same design Cusco proved in the All Japan Gymkhana Championship, where cars ran a full season without an overhaul.
Cusco's Type RS uses precision springs in the pressure plates instead of cone-plate preload. Cusco's own testing shows 50 to 70% less initial torque than a conventional cone-plate LSD, so there is less drive friction, sharper response, less chatter and less clutch plate wear. This unit is set as a 1.5-way (55/20 cam), which locks under acceleration and less on deceleration, so it understeers less on corner entry than a 2-way. It can be converted to 2-way (55/55) when it is rebuilt.
Note: Suits Evolution X models with AYC only. Side bearings are not included; you need two Mitsubishi side bearings (part number MB393957). Installation and setup by a qualified driveline workshop is recommended.
Features
- Cusco Type RS clutch-type LSD for the Evo X AYC rear diff
- 1.5-way as supplied (55/20 cam), convertible to 2-way (55/55)
- Spring-loaded pressure plates for low initial torque and smooth lock-up
- Less chatter and less clutch plate wear than cone-plate LSDs
- Proven in Japanese gymkhana competition
- Spring count and clutch setup can be tuned
Pairs Well With
- Cusco RS LSD (1.5-Way) – Mitsubishi Lancer Evolution X CZ4A (front)
- Wavetrac Limited Slip Differential - Mitsubishi Lancer Evolution X (CZ4A) - Transfer Case Front
Shop more: Cusco
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- Cusco
- Part number
- LSD 452 L15
Details
- Product
- Type RS limited slip differential, rear
- Vehicle
- Mitsubishi Lancer Evolution X (CZ4A), AYC models
- Lock type
- 1.5-way as supplied, convertible to 2-way
- Cam angle
- 55/20 (1.5-way); 55/55 (2-way)
- Springs
- 12 (max 12)
- Initial torque
- 4-5 kgf·m (approx. 39-49 Nm)
- Side bearings
- Not included (2 x Mitsubishi MB393957)
Contents
- 1 x Cusco Type RS rear LSD (1.5-way)

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