XYZ Racing Pro Rally Coilovers — Scion XB bB 4WD 2003-2007

The Scion XB bB 4WD was built as a tall, boxy JDM city car with a factory 4WD system meant for gentle snow traction, not for stage speed – which is exactly the gap the XYZ Racing Pro Rally coilover is built to close. For crews running this car in top-flight rally competition, the standard road suspension runs out of travel and control long before the driver does.

This is a gravel and snow-stage kit, not a road-going lowering coilover. The Pro Rally spec is built around sustained impact loading and repeated big-hit compression over rough ground – the kind of use a stage car actually sees, not a b-road cruise.

What this coilover does for your 2003-2007 Scion XB bB 4WD

Fitted to the 2003-2007 Scion XB bB 4WD, the kit restores the ride height and suspension travel that a low, road-biased setup would strip away, which matters on a chassis this tall and short – pitch and roll happen fast without suspension that can manage them. Damping and spring rate are set up to absorb repeated heavy compression rather than settle for one smooth surface, so the car resets onto line after a jump or washboard section instead of bottoming out. Because the bB 4WD’s factory geometry was tuned around gentle snow traction rather than stage pace, correcting ride height also corrects the geometry the driveshafts and centre differential were designed around, so the 4WD system keeps doing its job under load rather than fighting bind through the transmission.

About the Pro Rally coilover

XYZ Racing builds gravel and snow rally suspension in two distinct classes, and it is worth knowing which one applies to your car. The first bolts directly onto the original chassis mounting points – the more accessible route, aimed at a car still running its stock body shell. The second is built for cars whose bodywork has already been modified for competition, with mounting points, travel and geometry set around that altered structure rather than the factory layout. The Pro Rally kit here sits at the sharp end of that range: construction and spring rates are set for top-flight rally use, where the suspension has to survive full-speed compressions on loose surfaces stage after stage rather than the occasional pothole. Confirm which chassis configuration your bB 4WD is running before ordering, since the two mounting types are not interchangeable.

Fitment for the Scion XB bB 4WD (2003-2007)

This kit is built for the SC04 chassis code covering the Scion XB bB 4WD produced from 2003 to 2007. Confirm your car matches this chassis code and drivetrain before ordering, since the 2WD version of the same body uses a different suspension mounting layout.

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Spec your Pro Rally kit for the SC04-chassis Scion XB bB 4WD and build yours below.