The evolution of the Blackhawk UCA Lifting your 4WD — anything from 40mm up — changes the geometry your vehicle left the factory with. The control arms and steering were engineered around stock ride height, so once you raise it that relationship is thrown out, and a few problems start to show up: Lost caster correction — steering goes vague and slow to respond, with poor return-to-centre Bump steer — the vehicle darts and wanders over bumps, giving that loose, out-of-control feel through the wheel Clearance issues — bigger wheels and tyres can foul standard suspension components Coil contact on droop — on some vehicles the factory UCA can strike the coil at full droop Strength under load — OE arms aren't built for the punishment of serious off-road work Blackhawk upper control arms fix the root cause. They're designed with 3° of built-in caster to correct the ball joint angle the moment you go 40mm or higher, pulling your steering geometry back into line so the vehicle drives the way it should — sharp, planted and predictable. Kit contains: 2 × Blackhawk UCAs, pre-fitted with OE-style rubber bushes 2 × Roadsafe HD ball joints, pre-fitted to the arms 4 × Washers 2 × Blackhawk ball joint dust caps 2 × Dust cap sealing O-rings A note on ADR compliance You'll see Blackhawk arms described as "ADR compliant," and it's worth being clear on what that means, because the term gets used loosely across the industry. There's no specific Australian Design Rule written for this product group, so there's nothing to literally certify against. What it means here is that Roadsafe has engineered the Blackhawk UCAs to bolt up in the factory position: no chassis mounting points are moved or modified, and rubber bushings are retained at the chassis rail in line with OE specification. In short, the arms work with your vehicle's original design, not against it.
