mountune are pleased to offer a fitting service for the Quaife differential, which transforms your Mk3 Focus ST's performance. Unlike a conventional plate-style limited slip differential, the Quaife differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation and never locks harshly with a set pre-load of wheel slip across the driven axle.

This product includes a fixed labour charge for installation at mountune HQ in Hutton, Essex.

Fitting time: 8 hrs 

Included in the price is a Quaife ATB, fitting kit (seals, bearings and ring gear bolts), transmission oil and labour.

For full product information, click here.

Please note: the price shown for this product includes installation at mountune HQ only, and is not transferrable to any other dealer or installer.

Please specify your preferred installation date in the 'notes' section when checking-out; our workshop team will then contact you to confirm this date. If we can't accommodate your preferred choice, the team will discuss other available dates.