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BMW M140i, M240i, 340i and 440i QUAIFE ATB Limited-Slip Differentials now available!

The popular QUAIFE ATB Limited-Slip Differential is now available and in stock for the F20 M140i, F22 M240i, F30 340i and F32 440i, exclusively at BIRDS.

The Quaife ATB...
Testimonial - F20 M135i - Quaife LSD - Mr Chou

Date: 16/02/2017

Good day James
Editorial - F32 435dx - BMWCar Magazine - March 2017

Click the image below to read BMWCar Magazine's review of our F32 435dx. All upgrades and tuning packages are only available through Birds.
MB Club forum Mercedes Quaife ATB Limited-Slip Differential special offer February 2017

Hello gents,

Having been made aware of some interest in a group buy (and increasing pressure from a few of the members...!) we'd like to promote a special offer on all Mercedes Quaife ATB Differentials.

Rather than a group...
Testimonial - F20 M140i - Quaife LSD - Mr Welsh

Date: 21/01/2017

Hey James,
WINTER SPECIAL OFFER: Quaife ATB Differentials for BMW E85/E86 Z4

Transform how your Z4 applies power to the road with the popular Quaife ATB limited-slip differential at a special offer price, down from £1530 to £1320...
Testimonial - E92 330i - B3 Dynamics Package (Suspension, Quaife LSD, ARB kit) - Carsten

Date: 24/10/16

Hi James

After more than 10000 km and a trackday with the Qaife LSD and the suspension I do not regret the Money spent.

The setup improves the ride a lot without being soft. Even though the car sits lower than...
Testimonial - E82 135i - Quaife LSD - Mr Veiga

Date: 10/102016
Testimonial - E87 130i - B1 Dynamics Package (Quaife LSD, B1 sport suspension, B1 anti-roll bars) - Mr Wagner

This is the first time I've proactively offered to write an unsollicited testimonial after ordering some parts, but Birds' service exceeded expectations. They were easy and pleasant to...
Editorial - CAR Magazine - F32 435dx - July 2016