Cusco MZ front limited-slip differential, 1-way
- Type
- Plated (clutch-type) limited-slip differential
- Ramp setting
- 1-way — locks on acceleration, free on overrun
- Position
- Front, inside the gearbox
- Fits
- GD
- Surface
- Gravel / rally, Tarmac / track
Want this, or something like it?
We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.
Fitment is confirmed, not guessed
A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.
Some of this is on our cars
Parts marked On our cars are ones we race. Those descriptions are written from running them, not from a brochure.
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Enquiries go to Michael, who races the cars. Tell us the car and what you are trying to fix.
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About this part
The plated front diff in Betsy's stock six-speed, set 1-way so it locks on power and lets the car turn.
This sits in the standard six-speed gearbox in Betsy, our GD Blobeye tarmac car, alongside the standard R180 rear housing. Set up as a 1-way, it locks under power and frees off the moment you lift, which is what you want at the front of an all-wheel-drive car: it drags the nose out of a slow corner without fighting you on the way in. The trade is that it makes the car feel busier under braking into a tight hairpin than an open front does. On a stock gearbox and a stock motor it is one of the few changes that alters how the car drives everywhere, not just at the limit.
Specifications
- Type
- Plated (clutch-type) limited-slip differential
- Ramp setting
- 1-way — locks on acceleration, free on overrun
- Position
- Front, inside the gearbox
On our cars
This is fitted right now. The description above is written from running it.
Fitment
Subaru six-speed front differential. Confirmed for the chassis below — we list one only where the part is on one of our cars or on the manufacturer’s application list.
Before you buy
Why a GDB needs a 3.545 rear diff
The final drive has to match the transfer gear, or the centre diff destroys itself. The arithmetic, and how to read it off a listing.
Reading Subaru STI six-speed gearbox numbers
What TY856 codes and 32000A assembly numbers tell you about generation, DCCD and front LSD — and when they contradict the listing.
Buying used drivetrain parts sight-unseen
What a listing has to state before it is safe to bid, why clutch-type beats helical on stage, and the Japanese terms that carry the real information.