M7 Speed® 56-5M7551 - Front and Rear Stage 2 Chassis Reinforcement Kit

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Front and Rear Stage 2 Chassis Reinforcement Kit (56-5M7551) by M7 Speed®. Quantity: 1 per Pack. For the ultimate performance enthusiast M7 Speed has bundled the final two pieces needed to transform your vehicle from a go-kart into an F1 turning machine. Add these industry leading bolt-on suspension components and WOW! Instant grip like you have only imagined in your dreams. In this Stage 2 Bundle M7 Speed has packaged the exclusive Under Strut System and the M7 Rear Chassis Brace for your vehicle.


Finish: Black Anodize
Material: 6061-T6 Aluminum


  • Made in USA
  • Designed for your vehicle
  • It is proven and it works
  • Buy American made and engineered quality


  • (1) Under Strut System (USS)
  • (1) Rear Chassis Brace
  • Hardware

Under Strut System

Not many upgrades will force you to say, "damn that's incredible" or just plain "wow." The M7 Under Strut System (USS) features three integrated pieces that will brace, connect, and triangulate the bottom of the chassis for greatly improved chassis stiffness. This improved stiffness will give the vehicle better turn-in capability allowing the car to rotate into the corners with ease, and also greatly reduce understeer.The M7 Under Strut System is made of extruded and CNC machined aluminum that comes in a black anodized finish that is durable and designed to prevent chipping and corrosion. Stainless steel fasteners and necessary tools for nut insert installation are all included!

Rear Chassis Brace

During hard cornering, the vehicle is prone to chassis flex that results in poor handling characteristics and the need for the driver to compensate. M7 now offers a way to fix this problem with the M7 Rear Chassis Brace (RCB), one of the additions to the M7 Suspension Solutions line. This modification is perfect for people who want ultimate chassis stiffnes but with adding an intrusive rool bar or roll cage. The M7 Rear Chassis Brace is a great compliment to the immensely popular M7 Under Strut System (USS). Using the two together will give you the best in chassis stiffening without going the route of a roll cage. Besides the benefit of more predictable handling, the Rear Chassis Brace allows for use of the rear seats. Handling without sacrifice of passenger comfort. The M7 Rear Chassis Brace is the perfect addition to a serious street or track vehicle.

M7 Speed® is the premier and largest aftermarket MINI Cooper performance parts manufacturer on the Planet. Originally founded by Southern California car enthusiast Peter Horvath in 2002, M7 is now located in Mooresville North Carolina. With a history as storied and exciting as the MINI® itself, M7 has long been recognized as the premier source for MINI® performance parts and accessories.

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Vehicle Fitment

Clubman 2008-2013
Cooper 2007-2013


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M7 Speed® 56-5M7551 - Front and Rear Stage 2 Chassis Reinforcement Kit

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