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XRAY XB4’18

2018 All-new:

• Recent EOS Champion, European Champion, USA Champion and World Champion platform
• Redesigned chassis accommodates new lower motor mount to decrease the CG
• Lower motor mounts decrease the weight position of motor and central slipper clutch/diff, improving cornering speed and stability
• Redesigned lower composite central bulkhead fits the new lower alu motor mount
• Redesigned side guard allows motor to be positioned lower
• Improved shock absorber lower shims give more precise shock shaft movement
• Improved construction and production details on both front & rear differential crown gears results in quieter operation and increased reliability

General:

• Designed for highest performance at all levels of racing
• Engineered with attention to smallest details
• Manufactured with legendary artistic craftsmanship from premium European materials
• EFRA, ROAR, FEMCA spec compliant for stock and modified racing
• Super easy to build, set up, maintain, and drive
• Developed, designed and styled by Dipl. Eng. Juraj Hudy, manufactured exclusively by XRAY in Europe in the world's most sophisticated RC manufacturing facility
• Revolutionary off-road platform with new benchmark for premium quality, reliability and performance
• Premium XRAY service & support

Chassis:

• Smarter chassis weight balancing options allow the motor mount and center diff assembly to move frontwards or backwards
• Unique XRAY Multi-FlexTM technology for easy chassis flex adjustment
• Swiss 7075 T6 hardcoated 2.0mm aluminum chassis with countersunk holes for flush, smooth underside
• Tough composite side guards perfectly fit the chassis to seal against dirt and protect from side impacts
• Compact electronics plate allows for mounting the speed controller for quick & easy removal and assembly
• Graphite front, central & rear upper decks independent from chassis flex adjustment and work only as part of the front, central, and rear diff assemblies
• Composite & graphite chassis braces for fine-tuning of the chassis flex
• Independent servo mount allows the steering servo to be mounted to the chassis without touching it, ensuring the elimination of unwanted chassis tweak and improvement of overall traction
• Two different battery straps short -or- long included. The long battery strap allows battery pack to be installed either frontwards or rearwards
• Battery foam back spacer ensures the battery pack will not fall out
• Thick 3.5mm graphite front shock tower & 3.0mm rear shock tower with multiple shock mounting and roll center positions
• Extra robust front & rear bulkheads allow access to the differentials using only 4 screws

Differentials & Drivetrain:

• Front & rear gear differentials with adjustable oil viscosity, featuring 35T crown steel gears and 14T steel pinion gears
• Molded front & rear gear differentials for super-smooth, maintenance-free operation, features long-lifespan HUDY Spring Steel™ outdrives

• Innovative aluminum motor mount allows frontwards or rearwards motor position for weight balance adjustment
• Motor eccentric mounting plate inserts into an integrated motor holder/drivetrain support, allowing quick & easy motor rotation for gear mesh and secure clamping with a single screw

• Robust central slip-adjustable clutch with 81T main spur gear molded from exclusive secret blend of composite material
• Internal 1:2.5 drive ratio
• 3-pad slipper clutch with ultra-efficient SLS material for more efficient & precise slip adjustment, and HUDY Spring Steel™ hardened outdrives for extra lifespan and reliability
• Constant velocity drives (CVD) are manufactured from special HUDY Spring Steel for reduced weight and increased durability. The shafts are hand ground for maximum precision
• Safety collars for all CVD drive shafts to keep mounting pins securely in place
• Ultra-lightweight 12mm wheel hex drive hubs CNC-machined from Swiss 7075 T6 and additionally black-coated have ultra-true hex clamping design which ensures solid mounting of the wheel
• Optional 14mm offset wheel hex drive hubs available for super-fine track-width adjustment: -0.75mm, 0mm, +0.75mm and 12mm optional wheel hex drive hubs: -0.75mm, +0.75mm, +1.5mm, +2.25mm, +3.00mm, +3.75mm, +4.5mm
• Full set of 22 high-speed, blue-sealed ball-bearings used throughout the drivetrain to ensure maximum efficiency, degreased and oiled with Aero Shell® Fluid 12 for maximum smoothness and long life

Suspension:

• Swiss 7075 T6 aluminum suspension holders front and rear
• Integrated Suspension Settings (I.S.S.) for quick & easy suspension geometry setting using eccentric bushings inserted into aluminum suspension holders
• Specially-designed suspension components manufactured from carefully formulated custom composite mixtures to ensure proper flex and durability
• Race-perfected suspension geometry for superior performance and versatility in all racing conditions.
• Lightweight 1-piece caster blocks with preset 9° caster with easy adjustable roll center position featuring larger openings for quick and easy disassembly of CVDs; optional 6° & 12° caster blocks available
• Front chassis feature pre-angled caster of 8° and with the variable I.S.S. settings a range 16~20° of total caster can be achieved
• Tiny yet robust steering blocks molded from a special composite mixture for maximum strength featuring adjustable lower roll center.
• Very compact 0° toe-in rear uprights feature 3 different upper roll center positions, staggered inner/outer bearing sizes for improved load support and unsprung weight, and wheelbase adjustability via included shims
• Oversized outer bearings in uprights to for increased dynamic loads
• HUDY Spring SteelTM material for turnbuckles (featuring a tougher core) is used for front & rear upright linkages, steering system, and servo saver
• Anti-roll bars manufactured from special spring steel material to stabilize the car at both front and rear are mounted to the diff cases & can be easily adjusted via linkages; laser-engraved markings for easy identification, available in different sizes for fine-tuning

Steering:

• Simple, effective dual-arm steering system with integrated adjustable servo saver ensures perfect steering and easy Ackermann and bump steer adjustment

Shocks:

• Consistent, reliable membrane-free big-bore shocks with bleed-screw shock cap design feature up-stop shock rod travel adjustment (via O-rings) and downstop adjustment (via shims under pistons)
• Swiss 7075 T6 aluminum shock bodies, lower nut & bleeder shock caps are hard coated
• Super-precise molded Delrin™ pistons are offered with 2-hole design & hole diameters 1.6mm and 1.7mm for precise shock adjustment; for custom adjustment, a set of blank pistons (no holes) are also included
• Shock rods are machined from a special steel material, precision hand-ground for maximum smooth operation and additionally hardened for increased lifetime
• Shock springs are shorter to allow more fine ride height adjustment; manually measured, selected and matched into pairs to guarantee equal length and damping characteristics; laser engraved for easy identification. Two types of spring sets are included in the kit.
• Full line of linear -or- progressive shock springs available
• Premium silicone oils laboratory tested and calibrated to ensure highest possible consistency and quality

Bumper, Body, Wheels:

• Strong composite rear wing holder
• Front lower bumper protrudes from the bottom of the chassis to absorb all impacts from contact between the chassis and the track surface
• Beefy 6mm thick body posts from special composite material for maximum strength
• High-downforce XB4 body is high-performance, low-profile, and aerodynamic to perfectly fit the XB4 layout, with front window and top roof flow channels for proper air flow, and side downforce areas and top central rib for higher stability
• Specially designed 12mm hex hub wheels for high-competition racing; featuring reinforcement ribs to eliminate deformation and molded from very flexible material to retain shape even after impacts

Assembly, Set-up & Support:

• Premium 3D full-color Instruction Manual & supplementary sheets
• To fully understand the set-up possibilities we recommend the legendary HUDY Set-up Book which is loaded with over 40 pages of high-quality pictures and easy-to-read RC car set-up explanations
• Exclusive Virtual Online Setup Sheet database with thousands of set-up sheets for race tracks around the world
• Premium, unmatched XRAY online support

Adjustment Possibilities:

• Fully-adjustable front and rear suspension geometry: caster, camber, toe, kick-up, anti-squat, ride height, downstops, track-width, roll center, wheelbase, roll centers, Multi-Flex™
• Adjustable front & rear gear differential action (via oil viscosity)
• Adjustable slipper clutch
• Adjustable HUDY Sprint Steel™ turnbuckles (steering, front & rear upper links)
• Multiple upper & lower shock mounting locations at front & rear
• Adjustable Ackermann and bumpsteer
• Adjustable front & rear anti-roll bars
• Chassis pre-drilled holes for weight balance adjustment