XYZ Racing Tarmac Rally Coilovers — Chevrolet CORVETTE C7 (Cancellation Kit for Electronic Damping) 2013-2019

The C7 Corvette’s Magnetic Ride Control is brilliant on a smooth circuit and a liability on a broken sealed stage. The moment you start using a C7 the way a tarmac rally car gets used – kerbs, crests, mid-corner compressions taken at unsocial speeds – the factory MR damper logic is the wrong tool, and the OE struts simply aren’t built to be rebuilt or revalved between stages.

This XYZ Racing Tarmac Rally coilover kit replaces that system wholesale on 2013-2019 C7 cars and ships with the cancellation harness for the electronic damping ECU, so the dash stays quiet and the car runs on properly serviceable mechanical dampers tuned from XYZ’s own tarmac rally programme.

What this coilover does for your 2013-2019 Chevrolet CORVETTE C7 (Cancellation Kit for Electronic Damping)

The C7’s transverse composite leaf springs and MR struts give the factory car its low-effort body control, but they punish you on broken surfaces – the chassis loads up, the tyre skips, and traction goes with it. Swap to the Tarmac Rally damper and the car starts absorbing big single hits – drain covers, kerb-strikes, mid-stage crests – instead of bouncing off them, which keeps the contact patch loaded and the LT1 putting power down out of slow corners. Body movement is suppressed without going so stiff that the rear axle starts hopping under brakes. The cancellation kit deletes the MR fault codes cleanly, so there is no flashing dash and no limp-home behaviour between service halts. The result on a C7 is a far more honest chassis: weight transfer you can read through your hands, and a front end that follows the steering instead of arguing with the road.

About the Tarmac Rally coilover

The Tarmac Rally is XYZ’s competition damper for sealed-stage rallying – the bias is toward absorbing the jolt of a big bump while keeping the body settled, so the tyre stays in contact through the crest rather than skipping off it. Every setting on this damper carries over from XYZ Racing’s own tarmac rally programme, which is the source it was developed against rather than a bench specification. Construction prioritises serviceability between stages, with valving and spring rates targeted at the specific compromises a sealed-stage car has to make: enough compliance for adverse cambers and sunken manhole covers, enough control to hold a stiff line through fast sweepers. The Cancellation Kit element is specific to MR-equipped GM platforms like the C7 – it tells the body control module the magnetic struts are no longer present, so the system stops looking for them and no error light is thrown.

Fitment for the Chevrolet CORVETTE C7 (Cancellation Kit for Electronic Damping) (2013-2019)

Engineered for the C7-generation Corvette (chassis code CH04-C) built from 2013 to 2019. This kit is the variant for cars originally specified with Magnetic Ride Control – the cancellation harness for the electronic damping ECU is included as standard. Confirm your build year and original MR option before ordering.

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Configure your C7 Tarmac Rally spec below, including spring rates and ride-height options.