XYZ Racing Drag Racing Coilovers — Nissan 240/260/280 Z φ51 welding 1970-1978

Straight-line launches punish a 1970s S30-chassis Z in ways a corner never will. All that weight transfer happens in a fraction of a second, and if the rear axle can’t plant the tyre through that instant, you’re spinning off the line instead of hooking up. The XYZ Racing Drag Racing coilover for the 240/260/280 Z φ51 WELDING is built specifically to control that transfer rather than fight it.

This is a purpose-built launch tool, not a dual-duty road-and-strip compromise. It’s set up to load the rear end hard and fast on the hit, then hold that load through the run, which is exactly what a period S30 needs to turn revs into forward motion instead of tyre smoke.

What this coilover does for your 1970-1978 Nissan 240/260/280 Z

Weight transfer is the whole game in the 0-400 world, and this kit is tuned to move it deliberately. On the hit, the setup shifts load toward the rear axle so the drive wheels compress harder into the tyre contact patch, which is what actually gets a FWD, RWD, or 4WD car moving without spinning. For the rear-wheel-drive 240/260/280 Z, that means less time spent fighting wheelspin off the line and more of the run spent accelerating. The φ51 body diameter gives the damper the surface area to control that load transfer without the harshness a smaller-bore unit would introduce under the same forces. Because the geometry is welded to the chassis, there’s no bushing compliance eating into the transfer of force at exactly the moment it matters most – the first fraction of a second after the tree drops.

About the Drag Racing coilover

XYZ Racing built this range around a simple problem: standard road-biased coilovers are tuned to resist weight transfer, which is the opposite of what a drag car needs. The Drag Racing coilover instead lets the chassis change its front-to-rear weight balance on demand as engine torque hits the drive wheels, forcing greater compression into the tyre at the transmission end of the car. That compression shortens the time the tyre spends unloaded and unable to put power down, which is where consistency and stability at speed actually come from – not from stiffness for its own sake. The design covers FWD, RWD, and 4WD platforms, which tells you the core idea (controlled, instant weight transfer) matters more than drivetrain layout. On a car like the S30-generation Z, where the factory suspension was never engineered with a Christmas tree in mind, that difference shows up in the first 60 feet.

Fitment for the Nissan 240/260/280 Z (1970-1978)

This coilover is built for the Nissan 240/260/280 Z fitted with the φ51 WELDING mounting configuration, chassis code NI01, covering the 1970 to 1978 production run. The welded mounting means installation is permanent to the chassis rather than bolt-in, which is standard practice for a dedicated drag application on a car this age. Confirm your specific Z falls within the 240/260/280 model range before ordering.

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Built for one job – getting your S30-era Z off the line and down the strip. Configure yours below.