XYZ Racing Racing Spec Coilovers — BMW 4 SERIES F83 M4 (Modified Rear Integrated) 2014-2020

The F83 M4 Convertible carries more weight over its rear axle than the coupe, its folding hardtop and reinforced sills adding mass exactly where the S55’s twin-turbo torque already loads the rear tyres hardest. XYZ Racing’s Racing Spec coilover is built for owners taking this car onto a circuit or time-attack event, not just firming up the ride for a Sunday blast.

This kit uses the Modified Rr Integrated rear configuration, matching the F83’s rear shock mounting so the geometry stays correct under load rather than fighting the factory subframe. Damping and spring rates are set from data pulled off actual circuit running, aimed at controlling that extra convertible mass through fast direction changes without turning the car into a kerb-strike liability on a road course.

What this coilover does for your 2014-2020 Bmw 4 Series F83 M4 (Modified Rr Integrated)

Fitted to the F83 M4 Convertible, this coilover pulls the body control needed to keep the S55’s power usable through a full lap rather than just the first few corners. Track-focused spring rates cut the roll and squat that a standard M4 Convertible carries into hard braking zones, so weight transfer front to rear happens faster and more predictably. The Modified Rr Integrated rear mounting keeps camber and toe changes in check as the suspension compresses, which matters more on a convertible chassis that already flexes more than the coupe under cornering load. Ride height drops to a setting that lowers the centre of gravity without eating into the wheel travel a time-attack car needs over kerbs and compressions. The result on track is a car that turns in with less of the nose-heavy hesitation the standard M4 Convertible carries into direction changes.

About the Racing Spec coilover

XYZ Racing’s Racing Spec damper is the company’s motorsport-focused line, built specifically for track and circuit racing rather than fast-road use. Damping settings are not generic – they come directly from XYZ’s involvement in circuit racing series including the WTCC, where the same engineering team tunes dampers under real competition loads. For cars that have already had significant chassis or drivetrain upgrades – full aero, bigger brakes, or a built engine, for example – XYZ can produce a bespoke version of this damper rather than the standard kit. That route means sending XYZ the specification of what has already been changed on the car and the circuit it will be run at, and the shock absorber is built around that specific combination rather than a one-size-fits-all track setting. On the F83 M4 Convertible, that translates to a coilover engineered around competition damper curves rather than a firmed-up version of a road kit, with construction aimed at holding its settings through repeated heat cycles on track.

Fitment for the Bmw 4 Series F83 M4 (Modified Rr Integrated) (2014-2020)

This kit is built for the Bmw 4 Series F83 M4 Convertible, chassis code BM95, covering the 2014 to 2020 model years. It uses the Modified Rr Integrated rear shock configuration, so confirm your car’s rear suspension matches this mounting type before ordering rather than the standard-mount version.

What buyers also search for

• Bmw 4 Series F83 M4 track coilover setup for circuit and time-attack days
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• F83 M4 Racing Spec damper with WTCC-derived development
• Bmw 4 Series custom shock absorber option for heavily modified track cars
• Bmw M4 Modified Rr Integrated coilover fitment for 2014-2020 cars

Spec on this kit is confirmed against your car’s exact rear configuration rather than sold off the shelf, so check the Modified Rr Integrated fitment matches and configure yours below.