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2019 Off-Road Armoury 4400 Front Engine Chassis


  • Spacious ergonomic design for both Driver & Co Pilot.

  • Fully CAD designed, CNC profiled chassis and laser cut throughout.

  • Competition proven design developed over a decade of Ultra4 style motorsport.

  • Ultra4 Specification 

  • Superior driver visibility

  • Designed and manufactured in the UK

  • Versatile design suited to a wide range of off-road motorsports and trail driving.

Available in both Jeep and Defender body styles with rear fender options.


  • Solid Axel - (Spidertrax specific)

  • GM Power train - Front Engine - Chevy LS specific

  • 14” front and 16” rear coil-over & bypass shocks

  • 4 Link suspension with long travel rear trailing arms

  • 14” front suspension travel & 21” rear wheel travel

  • Front winch (Gigglepin specific)

  • Integrated spare tyre / utility space

  • 32 US gallon Jaz fuel cell - approximately 120 litres

Our vehicle building experience, competition background and attention to detail delivers a turn-key package that is ready for competition or can be tailored to your specific application. We specialise in turn key vehicles but we are able to supply builds at varying levels of completion from a basic rolling chassis - please get in contact to discuss your requirements.


All our vehicles designed to accept Chevy LS engines, powertrain options range from 300bhp to 700bhp mated to a custom built GM 4L80 Transmission. We also have to options available for transfer cases, depending on your budget and application.

Please contact us for a quote - please could you include as much information as you can regarding panels, mounts, drivetrain and axels you wish to use.

We are able to supply many specialist parts you may need to finish your build:

  • Jeep TJ Style Hood/Bonet & Grill kits

  • GM Performance Crate, CBM Race or 'Take-Out' LS Engines with run kits , GM transmissions, transfer cases & diffs

  • Radiators and coolers including mounting bracket kits

  • Aluminium body panels, footwells, bulkhead & dashboards 

  • Wheels & tyres

  • Full hydraulic steering kits - PSC, Trail-Gear or HOWE

  • Spidertrax Axels and occasionally we have good donor Nissan Y61 available

  • Seats, harnesses & window nets

  • Suspension links, joints, limit straps, shocks & bump stops

  • Lights, communication, navigation and many other race proven parts

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