XYZ Racing Top Sport Coilovers — Smart FORFOUR (W454) 2004-2007

The W454 Forfour stands tall and narrow on a platform it shares with the Mitsubishi Colt of the same period, built alongside it at NedCar, and Smart tuned its suspension squarely for kerb-hopping city comfort. That brief leaves a light car with plenty of body roll and a soft initial stroke that washes into understeer the moment you lean on it. The XYZ Racing Top Sport coilover for the Smart Forfour (W454) is aimed directly at that softness.

It is a height-adjustable coilover with firmer spring and damper rates than the factory setup, intended for the owner who wants occasional track-day composure without giving up a car that is still civil on the daily commute. On a sub-tonne hatch, even modest rate increases change the way the chassis settles, so the Top Sport spec is calibrated to sharpen the W454 without making it brittle.

What this coilover does for your 2004-2007 Smart Forfour

Drop the ride height and you immediately pull the Forfour’s high centre of gravity down, which is the single biggest handling gain on a car this tall. The stiffer setup – roughly 30 to 50 percent more damping and around 2kg/mm more spring rate than street tune – cuts the lean that makes the standard car feel vague mid-corner. Turn-in becomes more honest, the front tyres load more progressively, and the body stops pitching under braking into roundabouts and slip roads. Because the kit is height-adjustable, you can set a stance that clears UK speed bumps and still corner flat. On a light front-driver, that extra control translates into traction you can actually use out of slow corners.

About the Top Sport coilover

The Top Sport sits a step above a comfort street setting, running firmer damping and a heavier spring rate so the car resists the shock loads that unsettle a soft chassis. XYZ’s stated aim is to absorb uneven pavement and bigger hits while suppressing the body movement that follows, keeping the tyre pressed into the road for more consistent grip and overall stability. The valving and rates come out of XYZ’s own Top Sport racing experience rather than a generic catalogue spec, which is why the kit is positioned for track-day use and committed road driving rather than as a pure lowering kit. Height adjustment lets you balance the ride for a Forfour that doubles as transport, so the trade between firmness and usability stays in your hands.

Fitment for the Smart Forfour (2004-2007)

This kit is built specifically for the W454-chassis Smart Forfour produced between 2004 and 2007, the front-wheel-drive five-door assembled at NedCar on the shared Colt platform. Confirm your car is the W454 generation before ordering, as the later Forfour is a different chassis entirely.

What buyers also search for

• Smart Forfour W454 coilover kit for lowering a tall city-car stance
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• Smart Forfour W454 height-adjustable coilovers to cut body roll
• Top Sport coilover damping for the 2004-2007 Forfour
• Smart Forfour handling upgrade without ruining daily comfort

Set your ride height and spec for your W454 Forfour and configure yours below.