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

The XB bB’s tall, box-section body sits its centre of gravity higher than almost anything else on a time-attack grid, and on the 4WD variant that mass has to be managed through a shorter wheelbase than the sedans it borrows components from. Roll control, not outright grip, is what limits this car on a circuit – the all-wheel-drive layer adds traction out of slow corners but does nothing to stop the top-heavy shell leaning hard into fast transitions.

XYZ Racing’s Racing Spec coilover is built for exactly that kind of problem car: a platform that needs its body motion tied down before its power delivery becomes usable. This is the spec for owners running the XB bB 4WD in serious track and time-attack sessions, not fast-road duty.

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

Fitted to the XB bB 4WD, the Racing Spec kit’s stiffer spring rates and firmer low-speed compression control cut the body roll that the tall roofline naturally generates, keeping the contact patch flatter through direction changes than the factory suspension allows. Height-adjustable perches let you drop the centre of gravity closer to the sill line, directly countering the car’s biggest structural disadvantage on track. Damper response is tuned to load the outside tyre progressively rather than abruptly, which matters on a chassis this narrow and tall when the 4WD system is already sending torque forward under corner exit. The result is a car that turns in with less lean and settles faster between direction changes, letting the all-wheel-drive traction actually get used instead of being wasted correcting body movement.

About the Racing Spec coilover

Racing Spec is XYZ Racing’s dedicated circuit-race damper, and its baseline valving isn’t a desk exercise – it comes from settings logged during direct involvement in WTCC-level competition, then carried down into road-legal coilover form. That racing-derived starting point is why the compression and rebound curves feel deliberate rather than generic once you’re pushing on a circuit. For owners running heavier modifications – bigger brakes, wider track, aggressive aero – XYZ Racing also builds custom valving to match, since a heavily upgraded XB bB 4WD won’t behave like a standard one under load. Supplying details of your car’s other upgrades and the circuit you run lets the factory tailor a shock absorber build specifically to that combination rather than a one-size setup. Construction follows XYZ Racing’s usual monotube-based Racing Spec architecture, aimed squarely at cars that will see repeated hard laps rather than the occasional trackday.

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

This kit is built for the Scion XB bB 4WD, chassis code SC04, covering the 2003-2007 model years. Confirm the SC04 chassis code and 4WD drivetrain against your V5 before ordering, as the 2WD XB bB uses a different kit.

What buyers also search for

• Scion XB bB 4WD suspension upgrade for time-attack and circuit driving
• XB bB SC04 coilover kit with height-adjustable ride height for track use
• Scion XB bB Racing Spec damping tuned from WTCC-derived settings
• 4WD Scion XB bB coilovers for reducing body roll on a tall chassis

Configure your Racing Spec spec sheet and ride height below to get this coilover set up for your XB bB 4WD.