Standard open differentials love to dump power to the wheel with the least amount of grip, leaving you spinning your tires out of corners, fighting traction control, and wasting horsepower.
10X Entries Into Our F80 M3 Sweepstakes USE CODE KIT15 IN CART FOR BEST PRICE
Brand:
ES#:
5481396
Mfg#:
30309175WKWVTKT
In Stock
$1274.99
This product was last offered at the strikethrough price on 07-06-2026
Upgrade your F3X BMW’s rear suspension with this limited-time, discounted Doorbuster kit! It features Turner Motorsport spherical rear upper control arms and precision lower traction rods for improved handling and performance.
Upgrade a common failure point in your E8x/E9x's tired suspension with this limited time Doorbuster! Featuring Turner Monoball upper & lower rear shock mounts!
Upgrade your braking performance and feel with this Doorbusters special, featuring ECS drilled and slotted 2-piece rotors and Exact-Fit stainless steel brake lines
Dial-in front grip for less! This all-in-one Doorbuster exclusive includes upgraded thrust arms and fixed camber plates to increase camber and reduce deflection - resulting in a tangible handling increase!
Partial Replacement
