Description
Fits: Nissan Navara D40 - D23/NP300
Blackhawk 4×4 have identified a requirement for a program supplying replacement Upper control arm’s (UCA) that are fitted to a wide range of late model IFS vehicles. As a result we have developed the Blackhawk program – a product that will bolt in with marked improvements over the OE design.
The UCA4981NV2 suits all D40’s & D23 Navara that have 2 camber pins in the lower control arm. Some D40 Navara’s are only fitted with 1 camber pin for wheel alignment adjustment in the lower control which limits the amount of adjustability that can be achieved. When fitting the aftermarket Blackhawk UCA’s it moves the alignment scope to far out for potential camber adjustment with only 1 pin and is therefore not recommended.
UCA4981N has evolved into UCA4981NV2 which offers an additional 0.50 degree negative camber and increased clearance from front UCA tube to coil tower on full droop. The Blackhawk UCA’s are one of the only UCA’s that will achieve good alignments at 70mm of lift and not touch the coil tower!
For taller lifts you can fit BJ4085 extended ball joint to achieve good alignments.
UCA4981NV2
The evolution of the Blackhawk UCA’s…
When a vehicle has raised suspension and this can be anything from 30mm or above, it will disrupt the vehicles relationship with factory set geometry and create issues such as…
Reduced caster correction – causing vague steering and response
Bump steer resulting in reduced handling – with an out of control feeling
Clearance issues to suspension & wheels/tyres – larger wheels can hit suspension components
Some standard vehicles can have an issue of the UCA hitting the coil on full droop,
Strength of OE equipment in offroad scenarios –
Roadsafe 4WD have developed their UCA range of product drawing from over 30 years of experience in the manufacture & supply of chassis parts including but not limited to steering & suspension components. The Blackhawk UCA’s have been designed in conjunction with industry experts to ensure vehicle fitment is comprehensive. In this process we identified a large number of issues that can be present, resulting in a list of features we included to overcome these issues…
Fixed Caster correction , we’ve identified the correct amount of caster correction required for lifts ranging from 30-70mm, by providing a bulk – fixed amount of caster, this offers the ability to utilise the factory adjustment to fine tune the caster required for your vehicles lift, with the UCA not being the limiting factor for increased droop relative to the other components.
Camber change to meet OE spec , if your application requires increased camber, we can offer offset bushings to provide more camber.
Clearance to larger aftermarket wheels & tyres – we often see larger than standard size tyres with wheel offsets having clearance issues to the OE UCA, our Blackhawk UCA’s minimise this as much as possible.
Clearance to suspension components & chassis – a large number of OE UCA’s hit the coil or the chassis mounts on during the suspension travel limiting the amount of travel you can achieve, with revised bends and clearances identified the Blackhawk UCA’s will not contact the strut or the chassis limiting travel unless specifically designed to do so.
Fixed position balljoint – Blackhawk UCA’s do not use an adjustable balljoint, with a fixed location balljoint we are able to offer OE specification for the ball joint itself.
The position of the balljoint housings have been rotated to ensure the balljoint is not the limiting factor with maximum down travel. Roadsafe specifically chose a fixed ball joint for a number of reasons – in offroad applications the ball joint receives a large amount of “bump” loads, which over time can either knock an adjustable ball joint out of position leading to increased tyre wear due to a change in caster.