XYZ Racing Top Sport Coilovers — Mazda 3 (BM-BN) (Modified Rear Integrated) 2014-2018

The BM/BN-generation Mazda 3 arrived with a chassis that already punched above its hatchback class – SkyActiv body stiffness, a properly sorted multi-link rear, and steering that telegraphs more than most rivals. What it didn’t arrive with was the damping authority to match. Pushed hard down a B-road or onto a circuit, the factory setup runs out of compression travel, the nose dives under braking, and the back end starts to feel busy over mid-corner bumps.

The XYZ Racing Top Sport coilover for the Mazda 3 (BM-BN) is built to fix exactly that. It’s the track-day-leaning specification in the XYZ range, aimed at owners who want the BM/BN to hold a line through Druids or Paddock Hill without the chassis writing cheques the dampers can’t cash.

What this coilover does for your 2014-2018 Mazda 3 (BM-BN)

Drop the BM/BN onto Top Sport units and the first thing you notice is body control. Turn-in sharpens because the front axle stops pitching forward under brake application, which means the front tyres carry more vertical load when you actually need grip. Mid-corner, the multi-link rear stays planted instead of skipping over surface changes, so the chassis rotates cleanly on a neutral throttle rather than going light. The 30-way damping adjustment lets you run a firmer compression bias for circuit work and back it off for a long drive home, while ride-height adjustment via the lower mount (not spring preload) lets you correct the BM/BN’s slightly tall arch gap without compromising stroke. The result is a Mazda 3 that feels two segments more expensive through a quick direction change.

About the Top Sport coilover

Top Sport sits at the track-focused end of XYZ Racing’s road-and-track coilover ladder. Construction is a 32mm piston monotube damper with a separate spring perch and lower-mount ride-height adjustment, so changing how the car sits doesn’t alter the working length of the damper – a recurring weakness of cheaper preload-only kits. Spring rates are matched to the BM/BN’s mass distribution and the type’s intended use, leaning firmer than the road-biased Super Sport but short of the dedicated Circuit Master rates. Damping is 30-way adjustable on a single knob, mapped so that early clicks change rebound feel for high-speed sweepers and later clicks bring in compression authority for kerbs and trail-braking. Pillowball top mounts replace the factory rubber on the front struts where the geometry allows, sharpening steering response without introducing the harshness of a full track-only build.

Fitment for the Mazda 3 (Bm-Bn) (2014-2018)

This kit is fitment-specific to the BM and BN chassis Mazda 3, covering the 2014-2018 production run in both hatchback and saloon bodystyles. The fronts are MacPherson strut replacements; the rears are the separate spring-and-damper layout used across the BM/BN multi-link platform. Confirm your registration year falls within the 2014-2018 window before ordering.

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Configure your Top Sport spec below – spring rates, ride height range and top-mount options are set per fitment.