XRAY XB8 ’24 1/8 Nitro Off-Road Buggy Kit

From XRAY:
Team Development.

All the work and refinements on the XB8 were incorporated based on our own experiences and also from the vast majority of feedback from drivers all around the world. New ideas and prototypes were long-term tested by the factory team worldwide to ensure the improvements would work well in all track conditions and tracks in Europe, America, and Asia.
Martin Bayer
XRAY XB8 Designer

Perfection.

Designed in virtual reality using the world’s most sophisticated CAD tools, and manufactured using the world’s best machining and molding machinery, the XB8 achieves a level of perfection in all details that is second to none.

USA Champion.

At one of the world’s most competitive off-road races – the ROAR National Championship, it was XRAY’s Ty Tessmann who brought the first ROAR National Champion title to the XB8 platform. Tested and successfully run in the highest competition races so now you can enjoy the same winning platform.

Heritage.

“I designed and hand-made my first off-road cars back in 1986, and they were dominating the races thanks to unbeatable reliability and best performance. Years later in 2004 we have started our first mass production XRAY XB8 platform based on our long-term experiences, knowledge, and R&D expertise gained over decades, taking over the heritage I brought with me”.
Dipl. Eng. Juraj Hudy
XRAY Chief Designer

European Champions.

The XRAY XB8 platform displayed its incredible performance advantage by winning the European Championships in the hands of Bruno Coelho.

Made in Europe.

Designed, developed, and fully manufactured in-house at the XRAY factory in Slovakia, Europe, using the most high-tech German & Swiss machines and premium European materials, crafted with XRAY’s legendary attention to detail by our artistic production specialists. The XB8 is truly a masterpiece.

XB8 Platform.

XRAY proudly presents our new XB8 with the latest refinements to our successful XB8 platform, race-proven at the highest levels of competition around the world.

• Functionality
• Highest quality
• Highest performance
• Easy to service
• Easy to set up
• Strength and durability
• Ingenuity
• Smart design
• Premium materials

Chassis.

All-new shorter chassis with specially milled flex areas significantly improves traction on all surfaces.

Central Drive Shaft.

New shorter rear central driveshaft matches the new chassis dimensions.

Shock Towers.

New rear shock tower made from Swiss 7075 T6 aluminum increases stability on all surfaces and improves strength & reliability.

Shocks.

The XB8’24 features multi-adjustable 3-in-1 shock caps and includes 3 different seals – ribbed membrane, cell membrane and O-ring. The new shocks can be assembled in 3 different alternatives – emulsion / rebound / zero rebound, each one suitable for different track conditions.

Shock Cap 3-in-1.

All new 3-in-1 shock caps allow assembly in 3 different configurations – emulsion / rebound / zero rebound, each suitable for different track conditions.

Diff Bulkheads.

Front & rear bulkheads feature a semi-split design for easy diff access while adding the valuable diff height adjustment. The bulkhead also aligns the front central driveshaft with a reduced operating angle for less friction and reduced wear on the CV joint components and improved driveline efficiency.

Redesigned Bulkhead V2.

Reinforced front and rear bulkheads were updated for added strength to ensure higher reliability and to improve the seal between the main bulkhead and cover plate. The revised bearing inserts also feature improved dust resistance and prevent debris from entering the bulkhead assemblies while offering the valuable differential height adjustment.

Diff Height Adjustment.

The diff height adjustment of the semi-split bulkheads uses eccentric bushings to set the diff position. The diff height has 3 different settings. The diff height adjustment is a vital tuning option that allows quick set-up adaption for all different track conditions.

The ideal position will vary depending on the track conditions and ride height.

Diff Height Adjustment.

Central Drive Train.

The design of the semi-split bulkhead allows to adjust the angle of the CV joint depending on the track conditions, traction of the track and ride height used.

Matched Gears.

The differential crown gear and bevel drive gear feature specially designed profiles of the 46T and 13T gears for a perfectly matched engagement for smoother operation, less drag and significantly longer lifespan.

Gear Differential.

The high-volume differentials improve vehicle control and consistency over long runs and enhance reliability. The differentials feature larger capacity cases and larger internal gears with more teeth for improved differential moment. The larger oil volume and the shape of the gear teeth reduce overheating for improved consistency. The stronger diff pin design also improves reliability.

Easy Diff Access.

The semi-split bulkhead design and compact front bumper allows direct access to the differential while the entire suspension assembly remains mounted on the car.

Steering System.

The steering system includes an Ackermann plate and graphite servo saver component shape to work with the semi-split bulkhead. To ensure servo saver reliability, the servo saver parts are moulded from graphite material which is more resistant and efficient in dusty conditions.

Suspension Holders.

Front & rear suspension holders for semi-split bulkheads are redesigned for an expanded range of set-up adjustments. The front upper suspension arm holder is also updated for the semi-split bulkhead.

Front Upper Arms.

Front upper arms have additional mounting holes for the optional front upper arm wings. The wings increase downforce on the front suspension for increased traction and helps to keep the buggy nose down.

Optional wings are available in Lexan and Carbon alternatives.

Suspension Arms.

To ensure the performance and reliability, the Pivot Ball suspension arms and optional C-hub suspension are molded from special composite mixture. The rear suspension arms are molded from extra-hard composite mixture that makes the car easier to drive. The front lower and upper arms feature a composite mixture change from soft to medium. The optional front lower C-hub suspension arm is molded from a hard composite mixture.

Diff Gears & Drivetrain Ratio.

Specifically chosen gear ratio provides sufficient adjustments range. Differential main gears are manufactured from HUDY Gear Steel on a precision manual gear machine. This material was specially formulated and developed for use in gears. All gears are hardened to provide the longest possible lifespan.

A wide range of different gears — spur gear, clutchbell, crown gear — is available for perfect set-up and tailoring to particular racing conditions.

• Clutchbells are available in sizes of 13T and 14T.
• Spur gears are available in a range of 46T, 47T, and 48T.

Brake System.

Specially designed centering brake screws provide smooth braking operation. Brake pads slide more easily on the pins.

Chassis Braces.

The mounting of the chassis brace to the bulkhead eliminates transfer of energy from the suspension via shock towers to ensure more precise landings and more off-power traction.

The included rear brace is moulded from a medium-stiff composite mixture for improved flex & rigidity, and allows the mounting of optional graphite inserts to reinforce the chassis brace to make it even stiffer for particular track conditions.

Side Guards.

Side guards feature a larger bottom radius to give better stability on rough tracks. The radius of the side guards increases the car’s longitudinal flex. The side guards are moulded from a special composite mixture for increased flex that helps generate more traction.

The tough composite side guards protect the car, muffler, and fuel tank from side impacts. The side guards perfectly fit the chassis and seal against dirt.

Optional side guard braces allow for very efficient and easy chassis flex adjustment to adjust the handling of the car to different track conditions. By adding the graphite braces, the entire chassis is reinforced and stiffer flex will improve handling in high-traction conditions.

Chassis.

The chassis features chamfered front edges which prevents dirt pick-up when the chassis contacts the track. The chamfered edges will not “cut” the dirt, but rather the dirt will slide along the chamfered edges and not get stuck at the front of the chassis.

The side guards were moved 4mm rearwards to ensure that under full throttle and full steering lock the inflated tires will not contact the side guards and can operate freely.

Drivetrain.

The XB8 is a conventional shaft-driven 4WD off-road car featuring:

Front & rear gear differentials with adjustable oil viscosity, featuring 46T crown gears and 13T pinion gears
Central differential with adjustable oil viscosity, featuring 48T spur gear with standard 14T engine clutchbell
Front & rear universal drive shafts, and central CVD drive shafts

Steering Block.

Steering blocks from a harder composite material provide a more responsive feel especially on bumpy tracks and retain free suspension movement in dusty conditions for better consistency. The steering blocks are super lightweight yet extremely strong, featuring a larger outside 8x16x5mm ball-bearings for increased reliability and lifespan.

Rear Uprights.

Harder rear uprights maintain stability in all track conditions. The hard material also improves the handling in hotter conditions and better maintains it shape for improved bump absorbing. The uprights are super-strong and feature a larger outside 8x16x5mm ball-bearing for increased reliability and lifespan.

Brakes Linkage.

Brake linkage assemblies with stiff springs and ball-shaped bushings result in a more reliable and consistent brake operation through even the longest runs.

Wickerbill Wing.

Wickerbill rear wing features more downforce that helps increase traction when needed. 12 pre-marked airflow hole positions can be opened to reduce downforce to fine tune handling characteristics as needed. The wickerbill plate is mounted via 5 screws for easy changes.

Made from a strong special composite mixture, the wing was designed to survive severe abusive and extreme crashes while keeping its shape.

Wing Holder.

The rear wing holder has a super-slim, 1-piece design that has reduced weight and increased strength. The wing holder fits the semi-split bulkhead and provides maximum stability while still allowing flex during impacts.

Shorter wing holder.

Wing mount moves the wing forwards to create more downforce over the rear wheels and increase rear traction.

XB8 “Eazy” Body.

The “Eazy” Body was created after significant time spent testing dozens of different alternatives until the final design was selected. The design of the body improves the handling for all skill levels, from local racers to World Champions. The “Eazy” Body makes the XB8 more stable at speed and more reactive in the corners.

Anti-Roll Bars.

To increase overall traction in all track conditions, the front anti-roll bars were changed to 2.2mm and the rears to 2.4mm.

Anti-roll bars, manufactured from spring steel material, are easily mounted to front & rear diff cases with easy adjustment using the adjustable linkages.

Anti-roll bar wires of different thicknesses are optionally available for fine-tuning.

Turnbuckles.

To guarantee maximum reliability, all turnbuckles are manufactured from a special blend of HUDY Spring Steel™ which is specifically formulated for turnbuckles. The turnbuckles have a tougher core, making them very well suited for the steering system and rear upright linkages.

Ackermann.

The specially-designed ball studs eliminate steering lock and allow greater steering radius. The integrated backstops ensure that the pivot balls do not disconnect in crashes.

Ackermann is easily adjusted on the machined Swiss 7075 T6 steering plate to ensure highest reliability and strength.

Pivot Balls.

To increase the reliability and free movement of suspension even in the extremely dusty conditions, the pivot ball cups are moulded from a special graphite material that ensures more free movement even when dust builds up.

To reduce weight and lower the CG, the front upper pivot balls are combined with a steel threaded part for maximum strength. The aluminum ball is machined from premium Swiss 7075 T6 and additionally hard coated for extended lifespan.

Alu Wheel Hubs.

To accommodate the geometry, the XB8 includes rear wheel hubs with a +2mm off-set while the front features the +1mm off-set wheel hubs.

Ultra-lightweight 17mm wheel hex drive hubs are CNC-machined from Swiss 7075 T6 black-coated aluminum.

The alu hex hubs are specially machined to reduce rotating weight while guaranteeing wobble-free wheel mounting.

Central Diff Gear.

The central differential is an extra-large size for increased reliability and performance. The differential is over 5mm larger, with an increased oil capacity to reduce oil overheating in long runs, helping to keep differential performance as consistent as possible.

Internal Diff Gears.

The 20T and 10T internal diff gears are larger to ensure reliability and reduce diff oil overheating. The greater number of teeth ensures more precise fitment and engagement.

Pressed-steel differential bevel and satellite gears are heat-treated and machined for superior precision and smooth operation.

Diff Outdrives.

Updated diff outdrives accommodate the stronger diff pins.

To reduce rotating weight, the super-lightweight diff outdrives are machined from HUDY Spring Steel™ which allows unnecessary material to be removed to further reduce weight without affecting durability. The inner portions of the outdrives are additionally hand-ground for maximum precision and fitment into the diff case.

All outdrives are hardened using HUDY’s own special hardening process for extended lifespan and reliability.

Gear Differentials.

Both front and rear differentials are identical for easier maintenance and servicing.

The Large Volume diffs feature higher capacity cases, stronger diff pins, and large internal gears with more teeth for improved differential action, consistency and overall reliability. The larger volume of the differential and the shape of the gear teeth help reduce oil overheating.

Center Differential Access.

Access to the center differential is super easy by releasing the upper deck with only 4 screws. The low center diff housing is sized to accommodate optional spur gears, and the stands are lowered to keep the weight as low as possible and to allow smaller central diff gears to be used. The center diff housing stands hold the effective and race-proven brake system.

Wing Holder Brace.

To help prevent rear gear box breakage during crash impacts, the rear wing construction features wing holder brace that transfers crash impact energy from the wing and shock tower to the chassis where it is centrally resolved.

The wing holder brace includes an integrated body post as well.

Radio Box.

The XB8 includes the Hard composite radio box that is more rigid in higher temperatures to improve the precision of servo movement and has more room for the receiver battery pack.

The optional Soft composite radio box increase chassis flex. This can help improve handling characteristics in some low- to medium-traction conditions.

The 1-piece electronics assembly is very compact and can be quickly & easily removed for servicing and cleaning. It requires removing only a few screws from the bottom of the chassis to remove the entire electronics assembly from the car.

The large, molded radio box features a very clean design and layout that places the weight in key areas for proper balance. The batteries are placed along the front centerline of the chassis, and the lightweight receiver is placed on its side at the rear. The easy-access radio box is mounted on the side of the car and is secured by the fewest possible screws.

Fuel Tank.

The XB8 fuel tank complies with the latest rules featuring the transient jet that ensures the internal volume of the fuel tank cannot be changed by pulling the fuel line.

The extra-strong fuel tank features an integrated floating stone filter that ensures that the fuel pickup will always be in the correct orientation, even if your car isn’t. This fuel pickup system will allow fuel to continue to flow to your engine, even while waiting for a marshal to reach your inverted car and put it back on its wheels.

Internal baffles inside the fuel tank ensure that the fuel will always be in the area around the fuel line intake so even during large jumps the fuel will be constantly supplied to the engine.

The fuel tank cap features a very strong spring which ensures the cap will always close after refueling, and the specially designed rubber gasket perfectly seals the fuel tank and ensures no fuel will leak outside.

Engine Mounts.

The engine mounts extend up to the engine front bearing for improved chassis reinforcement in the longitudinal direction, and in jumps this will minimize chassis bending between the clutchbell and spur gear.

The CNC-machined aluminum engine mounts are made from superior-grade, lightweight alloy which helps to dissipate engine heat. The engine mounts are easily adjustable to obtain proper gear mesh.

High-Torque Clutch.

The high-torque clutch features a lightweight flywheel. The flywheel features reduced mass for quicker engine response and clutch engagement.

The high-torque clutch provides smooth, continuous power transfer from the engine to the driveline. With the included Hard springs, the clutch engages higher in the RPM range, resulting in more controllable power during acceleration while still maintaining good engine response and performance on jumps.

The Swiss 7075 T6 clutch shoes are small, lightweight, and designed for engagement during the entire travel of the shoe. The shoes are less sensitive to wear and results in improved lifespan.

The smaller diameter allows the flywheel to be more protected after landing large jumps, so there is a reduced chance of accidental engine stoppages.

The extra-tough flywheel nut is machined from Hudy Spring Steel™.

The clutch is equipped with hard clutch springs; optional soft and medium springs are also available.

4-Shoe Clutch.

The optional 4-shoe clutch features smaller, lighter internal parts, and the design allows for more balanced clutch bell engagement compared to a traditional 3-shoe design.

The 4-shoe design allows the use of multiple combinations of different shoe hardness and spring tensions for clutch engagement tuning, and even allows for mixed combinations of shoes and springs which gives ultra-fine engagement choices. There are 4 different hardness of shoes and 3 different hardness of springs available. Changing the clutch configuration is very easy thanks to the special assembly screws that hold the shoe and spring.

SOFT clutch setting generates the highest amount of traction and engages earliest;
MEDIUM clutch setting allows more clutch slippage and engages later;
HARD clutch setting engages latest and provides more revs to engine.

Shock Pistons.

Ultra-precise shock pistons feature 6-, 8- and 10-hole options. The big-bore pistons are molded from tough, well-proven Delrin® material to provide smooth action and durability. The precision molding production process ensures perfect piston roundness after production, so that the pistons move super-smoothly inside the shock bodies for identical perfect action in all four shocks.

Shock Springs.

The XB8 includes the 4-dot front shock springs for stability. XRAY shock springs are manually measured, selected and matched into pairs to guarantee precisely equal length and damping characteristics.

Silicone Oils.

HUDY Exclusive Silicone Oils are manufactured in Europe and each batch is laboratory tested and calibrated to ensure the highest possible consistency and quality from batch to batch. Based on the industry-standard cSt rating, the new line of oils will be easy to identify, adjust, and feel.

When following any set-up sheets by XRAY or XRAY team drivers, you can be sure that the oils you will get for your car are exactly same as those used by the factory racing team, thus ensuring very exacting set-ups and handling.

HUDY Chem Series.

Socket Head Cup Screws.

To increase lifespan and improve ease of servicing, socket-head cup screws are used instead of regular hex screws. The socket-head cup screws are stronger and more reliable, making it easier to work on the car.

Ball-Bearings.

A full set of 24 high-speed ball-bearings are used throughout the XB8 drivetrain.

All-new grease lubricated bearings are included for the pinion gears and diffs to increase reliability and lifespan, especially in dusty conditions. The remaining bearings are degreased and oiled with AeroShell® Fluid 12 to reduce drag and maximize driveline efficiency.

Graphite Grease.

The XB8 includes premium HUDY Graphite Grease – a high-performance, advanced-technology semi-fluid lubricant which incorporates both extreme pressure additives and finely-dispersed graphite for load carrying. HUDY Graphite Grease is intended primarily for the lubrication of rotating parts and loaded gears. In addition to providing outstanding load carrying, it is formulated to have excellent adhesion and resistance from “flinging off” under extreme conditions. HUDY Graphite Grease reduces wear and increases parts life.

Click here for more information of the full HUDY Grease range

Air Filter.

To minimize the dust getting into the air filter, the air filter cover mounting positions were modified and improved.

The smooth-flowing, efficient air filter is made from two parts. Air filter oil is included as standard. The universal rubber elbow allows fitment to most standard 1/8 buggy engines.

2-in-1.

The XB8 design allows to accommodate either the C-hub or Pivot Ball suspension. The included Pivot Ball suspension can be easily exchanged for the optional C-hub suspension to accommodate to the particular track conditions.

C-hub Suspension.

#350910 XB8/XB8E FRONT C-HUB SUSPENSION – SET

The optional C-hub is perfectly suited for smooth and short technical tracks & smooth surface conditions. At these track conditions the C-hub suspension generates increased frontward traction as well increased overall traction with enhanced steering.

The C-hub suspension includes lower suspension arm, steering block with Ackermann plate, C-hub, camber link & Ackermann steering plate.

Adjustment Possibilities.

The XB8 features fully-adjustable front & rear suspension geometry. For quick & easy adjustment, we recommend using set-up tools and accessories from HUDY, the world leader of RC tools.

The extensive and impressive range of adjustment possibilities includes: Caster, Camber, Toe, Kick-up, Anti-dive, Anti-squat, Ride height, Downstops, Track-width, Lower roll center, Upper roll center, Bump steer, Wheelbase, Ackermann, Fully-adjustable shocks, Adjustable front and rear differentials, XRAY Multi-Flex™

Chassis Balance.

The chassis design focuses on balanced weight distribution and weight transfer. Centerline holes are pre-drilled for easy balancing with the HUDY Chassis Balancing Tool #107880.

Instruction manual.

XRAY Instruction Manuals have become the industry standard; they are simply the best manuals you will ever get with an RC model car. Whether you are a first-time builder or an experienced racer, all instructions are straight-forward and easy to understand. The full-color Instruction Manual contains large 3D illustrations that show all assembly details in the easiest and most comprehensive manner.

VIP Customer Treatment.

Owning an XRAY model racing car is an experience unto itself. Not only will you own the most premium luxury model racing car in the world, but you will also become a member of the prestigious family of XRAY owners with direct support and service from the XRAY factory. XRAY brings you the most up-to-date RC website on the Internet, with daily racing news, and the latest product developments.

If you have any questions, problems or comments, you can ask the XRAY Support Team or any XRAY Factory Team Driver on the XRAY Support Forum. You can even upload your own set-up sheets or download from the thousands of different set-up sheets available from around the world at the exclusive XRAY Virtual Set-up Sheet Database. And that is only the start of the VIP treatment you get by joining Team XRAY.

Legend.

XRAY has been a driving force in the 1/8 off-road car racing scene since the release of the first XB8. 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.
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