XYZ Racing Racing Spec Coilovers — Infiniti M25/ M35/ Q70 Y51 FUGA 2010-2026

The Y51 is a heavy, long-wheelbase rear-drive saloon that was never designed to attack a circuit – and that is precisely the problem the Racing Spec coilover is built to solve. At a kerb weight north of 1,800 kg with a VQ or VK up front, the FUGA platform loads its outside-front tyre hard mid-corner and runs out of damper authority long before the chassis runs out of grip.

This is XYZ Racing’s circuit-only damper for the M25, M35 and Q70 Y51, developed from the same data the company logs in WTCC competition. It is not a fast-road kit with stiffer springs. It is the spec you reach for when track sessions are the reason you bought the car.

What this coilover does for your 2010-2026 Infiniti M25/ M35/ Q70 Y51 FUGA

Drop the Racing Spec under a Y51 and the first thing you notice is body control where the OEM air or coil setup used to fade. Damping curves derived from WTCC running mean compressions hold up through a full session rather than collapsing after three or four laps when the oil heats. The lowered ride height tightens the roll centre on a chassis that wants to lean, which lets you carry meaningful speed into long third-gear sweepers without the nose washing wide. Front-end response sharpens on turn-in, and the rear stops squatting under traction loads from the V6 or VK45 V8, so you can get back to throttle earlier off slow corners. Pedal-feel during trail-braking firms up too – the platform finally pitches in proportion to driver input rather than wallowing.

About the Racing Spec coilover

Racing Spec is XYZ Racing’s circuit-focused damper, built and tuned around live race data rather than dyno simulations. Settings are derived from direct participation in WTCC and similar series, which is where the baseline valving comes from before it is mapped onto a road-car chassis like the Y51. The kit is engineered for serious track and time-attack use, with the damping range and spring rates pitched toward sustained on-limit running rather than ride comfort. For cars carrying aggressive upgrades – aero, slicks, big-brake conversions, A-class race-car running gear – XYZ Racing also produces custom-valved shocks on request. Supply them with your full modification list and the circuits you intend to run, and the dampers are built to suit that specific combination. For a stock-bodied Y51 on semi-slicks, the catalogue spec is what you want.

Fitment for the Infiniti M25/ M35/ Q70 Y51 FUGA (2010-2026)

This kit is built for the Y51 chassis sold across the M25, M35, Q70 and FUGA badges from 2010 through to 2026. It covers the VQ25HR, VQ35HR and VQ37VHR petrol cars on the standard coil-sprung suspension. If your Y51 left the factory with the optional air suspension, confirm your current setup before ordering – Racing Spec is a conventional coilover conversion.

What buyers also search for

• Infiniti Y51 FUGA track-day suspension upgrade
• Q70 coilovers that survive repeat circuit sessions without fade
• M35 / M37 coilover conversion from factory air suspension
• WTCC-derived damping for a heavy rear-drive saloon
• Custom-valved Racing Spec dampers for aero-equipped time-attack Y51 builds

Pick your spring rate and damping spec below to configure your Racing Spec kit for the Y51.