- All-new multi-function rear upright helps to generate more traction & increase stability
- All-new longer rear driveshafts with 2.5mm pins for smoother operation
- All-new rear wheel axle with safety collar, featuring XRAY’s unique multi-position driveshaft adjustment to vary driveshaft length
- All-new longer rear camber link to accommodate all roll center alternatives
- All-new larger ball-bearing used in the rear uprights for increased reliability
- All-new rear suspension arms redesigned to accommodate the new multi adjustable upright
- All-new longer rear arm pivot pin to accommodate the new multi adjustable upright and wheelbase adjustment.
- All-new diff outdrives redesigned for 2.5mm pins for smoother operation
- All-new bevel drive gears machined from special gear steel material reduce the weight and significantly improves reliability
- All-new central shaft universal joint redesigned to accommodate the new steel pinion gears
- All-new graphite reinforcement plate between servo saver increases traction and improves cornering speed
- All-new body redesigned to make the car more stable and improves the rotation in corners
- Includes new rear wheels with a deeper recess for the wheel nuts
Multi-Adjustable Rear Suspension.
All-new adjustable rear suspension features the new rear upright, unique multi-length adjustable CVD drive shafts, and longer camber link. This new system creates a huge variety of roll center adjustments for different track conditions. Changing roll center has never been quicker or easier.
All-new rear uprights feature multiple set-up options for upper & lower roll centers. The upper roll center is adjusted at the camber linkage via shims (up/down & in/out), while the lower roll center is adjustable via eccentric inserts for 9 different positions (up/down & in/out).
The multi-function uprights have the upper roll center position in the middle of axis of the connecting joint of the drive shaft to help generate more traction and increase stability.
There are three different uprights available: hard (included), graphite (optional), and aluminum (optional), each suitable for different track conditions.
To accommodate the new, fully-adjustable rear upright configuration, the rear drive shafts are now longer. Featuring XRAY’s own unique multi-length drive shaft adjustment there are 4 different length-adjustable positions to alter the length of the drive shaft depending on the roll center position. The all-new safety collar eliminates the clearance of the drive shaft and prevents the drive pin from getting loose.
XB4 constant velocity drive shafts are manufactured from world-renowned HUDY Spring Steel™ and feature 2.5mm drive pins for maximum drivetrain efficiency. The drive shafts are some of the world‘s thinnest yet most durable drive shafts used in electric off-road cars. Hardened with a proprietary hardening process, the drive shafts provide unbeatable lifespan and reliability.
Rear Drive Axles.
Unique drive shaft length adjustment uses 4 different connecting hole positions at the drive axle end to allow changes to overall driveshaft length. Another great XRAY innovation that accommodates different roll center positions without needing to use drive shafts of differing lengths.
With the all-new multiple roll center adjustment possibilities, the rear camber link is longer to accommodate all the different roll center position alternatives.
The updated center driveline features a redesigned universal joint that accommodates the all-new machined bevel drive gears. The new bevel drive gears are machined from special gear steel material that reduces the weight and significantly improves reliability.
Gear differential features all-new diff-outdrives designed for use with new 2.5mm pin.
The new stronger diff outdrives are the result of a new hardening process that increases lifetime and reliability.
The XB4 gear diff ensures increased on-power steering which is needed on nearly all types of tracks, and is ideal for both carpet and clay tracks.
The maintenance-free super-smooth gear diff includes internal gears which are precision-molded from tough XRAY developed and mixed composite material ensuring high life time and super-smooth and efficient operation.
To improve the reliability of the differential and to reduce the rotating weight, both front and rear bevel drive gears are now CNC-machined. The differential crown gears and bevel drive gears are made from steel which has been additionally hardened to ensure increased lifespan and reliability.
For clay and low-traction tracks, optional graphite diff crown gears can be used for increased traction.
All-new rear suspension arms were redesigned to accommodate the new multi adjustable uprights and the adjustable drive shafts. The outer pivot of each arm features small screws to secure the new hinge pins and prevent separation in a crash. This floating hinge pin reduces suspension bind.
The suspension arm itself is rigid enough to provide a responsive feel, yet soft enough for extreme durability. The exclusive composite mixtures used for suspension arms offer a perfect balance between reliability & performance.
There are two different suspension arms available: hard (included), and graphite (optional), each suitable for particular track conditions.
All-new graphite reinforcement plate between servo saver increases traction and improves cornering speed.
The dual arm steering system is very simple yet effective and features an integrated easily adjustable servo saver. Ackermann is easily adjusted by quickly & easily changing the steering link mounting positions on the steering plate.
Bump steer is easily adjusted for more aggression by inserting a shim between the steering block and steering linkage.
The included XB4 rear wheels feature a new, redesigned countersunk center area to allow the wheel nut to sit deeper in the wheel.
The wheels are perfect for high-competition racing. The wheels are made from a very flexible material, while still being ultra-durable to withstand impacts. The side of the wheel is aerodynamic for maximum performance. The wheels were designed to provide maximum traction.
Internal reinforcement ribs make the wheels as stable as possible and eliminate deformation. The wheels feature a 12mm internal hex.
The XB4 includes a completely redesigned, low-profile Alpha body with super-smooth airflow and revised downforce characteristics. The Alpha body helps the XB4 by increasing steering & stability while also improving handling in jumps.
The front part of the body has a new high-downforce area. The sides of the body have upper downforce areas to generate more mid-body downforce, and the straight sidewalls improve stability. The upper part of the body was redesigned with a smooth flow channel for stability.
The XB4 bodies are available in different thicknesses for fine tuning the performance of the car.
Stylish and effective rear wing was designed to work perfectly with the XRAY XB4 body. Made from strong Lexan™ material, the wing is supported on the wing mounts by extra flat shims to better support and extend the life of the wing.
Optional thicker 1.5mm (#363511) and 2.0mm (#363512) rear wings are highly reliable with less chance of breakage, while at the same time influencing the performance of the car as well. The thicker wing gives higher traction and stability, but gives reduced steering.
All-new larger ball-bearing used in the rear uprights for increased reliability. The XB4 features greased ball-bearings for front steering blocks & rear uprights to increase lifespan in dusty conditions. The remaining bearings are degreased and oiled with AeroShell® Fluid 12 for maximum smoothness and long life.
A full set of high-speed ball-bearings are used throughout the drivetrain to ensure maximum efficiency.
Bruno Coelho made a stunning debut at the World Championship with his XRAY XB4, setting the TQ and winning the World Championship title!
Daniel Kobbevik repeated the great success at the last World Championship winning the Junior World Champion title.
XRAY XB4 – World Championship winning 1/10 off-road 4WD car to bring you to the Winners’ Circle.
Made in Europe.
Engineered and manufactured in-house at the XRAY factory located in Slovakia, Europe, the XB4 is a fantastic demonstration of XRAY’s attention to detail in all of its products. The XB4 is created by XRAY’s design staff using premium European materials and sophisticated German and Swiss machines.
XRAY’s Ty Tessmann achieved the first ROAR National Championship for the XB4. Tested and successfully run in the highest competition races now you can enjoy the winning platform.
The XB4 is typical XRAY: ultimate professional, high-competition RC car for the most demanding racers, developed with attention to the finest detail, and backed by premium service & support…a luxury masterpiece.
With ongoing development of the XB4 platform, Team XRAY continues to win at the highest competition levels including the European Championship. The XB4 is a multi-time European Champion as well the European Junior Champion.
XRAY has been a driving force in the 1/10 off-road car racing scene since the release of the first XB4. Continuous development and evolution of the XRAY product line has led to ever-increasing performance. The craftsmanship, durability, and performance of XRAY kits have become legendary. Be part of the family, live the heritage.
XRAY XB4 and Bruno Coelho are back-to-back EOS Champions. After winning the 2015, 2016, 2017 season, Team XRAY with Bruno Coelho again wins the 2018 season making the XB4 one of the most successful cars.
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