![Quaife ATB Differential [Mk8/MK8.5 Fiesta ST / Puma ST] Upgrade Lighter than OE system](https://cdn.shopify.com/s/files/1/0367/2621/files/b299st_atb_2048x_9c46011e-effc-4cd3-a4b7-1fc51711485b.webp?v=1751528825)
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Ships within 48 hours · Estimated delivery Oct 8 - Oct 13
Lighter than OE system
2-litre and 3
3L EcoBoost engine frees up rotating mass and helps to improve engine response
(This is designed to replace the existing bushes on your current mountune Roll Restrictor)
Quaife ATB Differential [Mk8/MK8.5 Fiesta ST / Puma ST] Upgrade Lighter than OE systemFor vehicles without the Performance Pack Available from mountune, the Quaife ATB helical LSD differential for Mk8 Fiesta ST Puma ST fits the B6+ gearbox. A direct replacement for the standard Ford open differential, the Quaife differential transforms your car'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