XRay XB4D 26 - Dirt Edition

The XRAY XB4D 26 Dirt Edition (part number XR360020) focuses on centralised mass and a lowered centre of gravity to deliver precise handling on loose and dirt surfaces. A revised chassis layout brings key components closer to the centreline and lower in the car, improving response, stability and overall balance.

With a host of lightweight parts and structural refinements, this XB4D variant builds on the XB4 26 platform to increase traction, reduce rotating mass and make setup changes more effective.

Key Chassis And Handling Updates

• Centralised and lowered components reduce rotational inertia and lower CG for improved dynamics
• New chassis plate accommodates updated side guards and motor mount, allowing lower battery and motor positions
• New motor and central bulkhead lowers motor position for a further CG drop
• New carbon centre upper deck for added rigidity and tuned flex
• Smaller spur gear maximises the benefit of the lower motor position
• Updated side guards provide clearance for lowered motor and battery and enable easier installation
• Front and rear bulkheads include provisions for anti-roll bar centring collars
• Rear carbon T-shaped chassis brace offers new flex adjustment choices
• Narrowed rear chassis brace brings motor and battery closer to the centre line

Lightweight Components For Faster Response

• Ultra-light, strong titanium front and rear shock mounts
• Ultra-light, strong titanium turnbuckles
• Lighter differential outdrives and slipper outdrives reduce rotating mass
• Shorter shock caps increase up-travel range
• Lowered 6 mm spring collars expand ride height adjustment range
• Steering plate and servo saver mounted on bearings for smooth, precise operation

XB4D-Specific Aerodynamics And Drivetrain

• XB4D includes a 75T gear differential spur
• Wider rear wing in the XB4D increases stability and overall traction
• Epsilon 4D body included in the XB4D to increase overall downforce
• New front wing improves control in the air for easier jumping
• Rear wheel hub with 2-slot design for the XB4 platform

Together, these updates make the XB4D 26 a refined, responsive option for dirt and low-grip racing, with enhanced flex tuning, reduced mass where it matters, and effective aero to keep the car planted.