XYZ Racing Drag Racing Coilovers — BMW Z4 4 CYL 2002-2008

The Z4 4 CYL’s front-engine, rear-wheel-drive layout puts weight over the nose at rest – precisely the wrong place when the lights go green and you need traction over the rear tyres instead. XYZ Racing’s Drag Racing coilover kit for this platform is built around that specific problem, not around a generic ride-height figure lifted from a road kit.

Where a Sport or Top Sport set-up chases lap time through corners, this kit is tuned for one job: getting the Z4 off the line and down a quarter-mile straight without breaking traction or wandering as speed climbs.

What this coilover does for your 2002-2008 Bmw Z4 4 CYL

Off the line, the kit lets you shift static weight rearward before you leave the mark, loading the driven rear tyres so they bite instead of spin. That matters more on a four-cylinder Z4 than on a six – there’s less power on tap to mask a bad launch, so every percentage point of extra rear grip shows up directly in your 60-foot time. Through the rest of the pass, the same adjustment keeps the rear planted as the nose tries to rise under acceleration, so the car tracks straight down the lane rather than wandering as speed builds. Because the geometry is set up for a straight line rather than for cornering load, you get a firmer, more predictable platform exactly where a drag pass needs it – off the line and through the traps – instead of the compromises that come with a kit built to also carry lateral grip.

About the Drag Racing coilover

XYZ Racing’s Drag Racing range is built specifically for 0-400 metre runs and works across front-, rear- and four-wheel-drive applications rather than being a rebadged street or track kit. The core idea is adjustable weight bias: instead of a fixed spring perch, the set-up lets you change how much of the car’s mass sits over the driven axle the instant you leave the line. On a RWD four-cylinder Z4 that means loading the rear contact patch at launch, forcing the tyre into greater compression against the tarmac and cutting the amount of time the wheel spends spinning free before it hooks up. That shorter idle period is what actually delivers the stability gain once the car is rolling – less initial wheelspin means less correction needed as speed climbs down the strip. It’s a single-purpose kit, tuned around launch and top-end stability rather than cornering balance, which is what separates a genuine drag set-up from a repurposed road coilover.

Fitment for the Bmw Z4 (2002-2008)

This kit is specified for the 4 CYL Z4, internal chassis reference BM73, built between 2002 and 2008. Confirm your car’s engine and production date fall inside this range before ordering – the six-cylinder Z4 of the same era runs a different specification.

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Pick your spec below and get the Z4 set up to launch hard and track straight through the traps.