MGB Limited Slip Differential (Quaife ATB)

Upgrade your MGB’s performance with the industry-leading Quaife Automatic Torque Biasing (ATB) Limited Slip Differential — a core component fitted to every Frontline restoration since 2010. Designed and manufactured in Great Britain to ISO9001-2008 standards, this precision-engineered differential delivers exceptional traction, stability and driver confidence on both road and track.

Unlike traditional plate-type LSDs, the Quaife ATB uses a gear-driven system with no wearable components, meaning zero maintenance and no servicing required — ever. The result is a smooth, progressive transfer of torque that reduces wheelspin, minimises understeer and oversteer, and enhances overall handling balance without harsh locking characteristics.

Proven in motorsport and trusted by OEM manufacturers including Ford, Lotus, BMW and GM, the Quaife ATB differential offers seamless performance with a lifetime warranty for both road and competition use. It integrates perfectly with modern driving dynamics, improving traction under acceleration while also contributing to more stable braking performance.

A direct replacement for the factory open differential, it retains standard lubrication and maintenance schedules while transforming the driving experience.

Key Benefits:

Dramatically improved traction and cornering stability
Smooth, progressive torque transfer — never harsh or intrusive
Eliminates maintenance with a fully gear-operated design
Reduces torque steer and improves overall vehicle balance
Proven reliability with over 100,000 units sold worldwide
Lifetime warranty for complete peace of mind

Widely regarded as the ultimate differential upgrade, the Quaife ATB is the perfect solution for drivers seeking sharper handling, greater control and enhanced performance from their MGB.

Shafts are sold separately.