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XRAY XB2D’24 – 2WD 1/10 Electric Off-Road Car – Dirt Edition 320016

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Designed for Carpet and Dirt.

Both Dirt and Carpet edition of the XB2 are both designed specifically for the different track conditions and extensively tested in all the different tracks to ensure maximum performance right out of the box.
The XB2D was long time tested at slippery track at Hudy Arena and at various dusty European tracks till high traction tracks in USA.
The XB2C was extensively tested at the carpet track at Hudy Arena and during the whole EOS race series season at various tracks around the Europe. The Carpet edition was at the same time tested at various Astro tracks.

XRAY XB2’24 All-new Features

  • New one-piece chassis design with integrated kick-up eliminates the lower brace and improves suspension geometry
  • The wider chassis shape fits the latest batteries and has a milled pocket under the servo area for improved flex and optional weight placement
  • The kits’ chassis lengths are selected to match typical track conditions: Medium for Carpet, Short for Dirt
  • New elevated side braces improve flex characteristics and integrate with the new front upper deck
  • The completely new front upper deck’s bridge design integrates with the new steering system and moves the shock tower forward with the shocks behind the tower
  • The new anti-roll bar mounting system eliminates play for more consistent handling
  • A new steering plate, steering arms and posts provide a wider range of geometry adjustments and improved steering response for easier control
  • New 2 dot steering extensions match the new steering system geometry, working together to improve the steering angles and responsiveness
  • Front roll center holder features the two most common inner camber link positions for simplified setup, along with provisions for the new anti-roll bar system
  • The new anti-roll bar system uses shorter bar shapes with a top mounting system for easier adjustments
  • Front shock tower integrates with the upper deck, placing the shocks behind the tower, with new front wing mounting locations
  • All New 13.2mm shock design features new shock bodies, 2.0 and 2.5mm piston choices, shock caps, nuts and shock shafts
  • The 13.2mm shocks use a new X-ring design for improved seal without excess friction for improved shock operation
  • New conical springs have been selected to work with the new 13.2mm shock package
  • RF and RR suspension holders move the inner pivot wider and alter geometry to 3 deg of integrated toe (w/ 0 inserts) for increased stability on all surfaces
  • The rear shock tower lowers the shock position by 4mm for improved roll characteristics
  • The improved gear diff (XB2C) with new diff case and new diff outdrives unifies drive shaft lengths between ball diff and gear diff
  • The included 77mm driveshafts will work with both the ball diff and gear diff for simplified parts needs and easier differential changes between surfaces
  • New universal 2-pad slipper with updated top shaft, slipper plates, spring and nut improves traction in all conditions
  • Both Rear Motor and Front Motor gearboxes are included in each kit to adapt the XB2 to any surface or condition
  • Both Standard and Disengaged rear arms are included in every kit to expand the tuning options out of the box
  • Rear uprights with new lower roll center position improves stability with better resistance to collapsing in high-speed corners
  • Narrower rear wheel hexes are optimized offset for use with the wider suspension holders
  • New ‘Lush’ rear wing with significantly increased lifespan improves airflow and maintains chassis attitude over large jumps while improving traction in all conditions
  • A composite cover is included for the front tower to provide protection in crashes and increase lifespan.
  • The included front wing is mounted to the front shock tower
  • New Carpet and Dirt bodies match the new chassis profile with improved airflow for better handling
  • Front & Rear LSM arms in Medium composite are suitable for all conditions and provide better crash durability
  • Medium composite steering blocks, C-hubs and uprights provide additional durability out of the box
  • Optional stainless steel weigh plate matches the new chassis cutout and uses tapered holes for easier installation and weight balance adjustment
  • Wire organizer helps maintain clear electronics installation
  • 30mm Fan Holder for additional ventilation


The XB2 platform works at the highest competition level in any track conditions, whether it be super-low-traction dusty tracks, medium-traction, or super-high-traction carpet or astro turf; there is an XB2 for you that will handle flawlessly in any of these conditions.
There are two different XB2 kits to choose from – Carpet Edition and Dirt Edition, both built on the same platform with full compatibility and with interchangeable parts.
The Carpet Edition is designed for medium to very-high traction conditions, while the Dirt Edition is designed for very-low to medium grip conditions.
The Uni-Platform™ allows either XB2 edition to be tuned or converted to suit any track conditions with only a few additional parts.

All-new Front End.

The front assembly receives significant improvements for 2024, featuring an all-new bridge style front upper deck, new steering system and servo horns, new shock tower with the shocks positioned behind the tower, new side braces and an improved play-eliminating anti-roll bar mounting system.

Side Braces.

Redesigned side braces feature an elevated design to support the new one-piece chassis and connect directly with the new bridge upper deck.
The new braces have improved flex to provide improved front stability while also increasing rear traction, and the additional battery holder mounting holes expand the weight balance adjustment range.

Battery Holder.

A new full forward battery mounting position is made possible by the new side braces. The additional tuning options for weight balance adjustments help to fine-tune set-ups for different track conditions.

Front Upper Deck.

The new front upper deck improves flex in all directions and provides extra clearance for the new steering system, anti-roll bar collar, and shock mounting positions. The new design improves both handling & durability.

Gear Differential.

The gear differential has 35% larger internal oil volume than previous design to increase consistency of the diff action, yet at the same time it is significantly narrower to fit into the LCG gear box and to move the rotating weight closer to the centerline.
The super-smooth gear diff includes a composite case and cover with internal satellite gears that are precision-molded from special XRAY-developed graphite composite material, ensuring a long lifespan and super-smooth, efficient operation.
The gear differential is suggested for medium to high traction conditions as it increases on-power steering that is beneficial on all carpet tracks.
The gear differential is included in the Carpet edition.
Ball Differential.

The XB2 ball differential offers improved performance, durability, and easier maintenance. The externally adjustable ball differential is machined from HUDY Spring Steel™ and is additionally hardened for extra durability and a longer lifespan. A high-quality carbide thrust bearing and carbide balls are included for ultra-smooth operation. The outdrive adapters are designed for use with 2.5mm pin drive shafts.
The ball differential is suggested for all types of dirt tracks and for bumpy Astro tracks and is included in the Dirt edition only.

Easy Diff Access.

Gear box features super easy access to the differential. Both gear boxes for Dirt and Carpet edition have the super easy diff access by removing only 6 screws.
Each gear box incorporates all the finest details and craftsmanship. All parts fit together perfectly, and the super-easy access to the rear differential will be appreciated by every racer. The durable gear box houses the differential with all the transmission components and serves as the mounting point for the rear roll center holder, motor plate, and rear shock tower.

Diff Height Adjustment.

The gear box features differential height adjustment. There are 6 height adjustment positions available using the included eccentric bushings. The ideal position will vary depending on the track conditions, ride height and the size of the tires used.
Slipper Clutch.

Power from the motor is transferred to the drivetrain via an externally adjustable slipper clutch for quick & easy tuning.
There are two different slipper clutch designs available:
2-pad slipper – increases slippage to generate smoother acceleration at low traction conditions, included in Dirt edition
3-pad slipper – less slippage to generate more consistent braking at high traction conditions, included in Carpet edition
The slipper pads are made from ultra-efficient SLS material with very-high slip efficiency, thus allowing very precise slip adjustment.
The lightweight slipper plates are machined from premium Swiss 7075 T6 and additionally hardened before a final black surface treatment. The plates have a machined relief which decreases the friction surface to assist with clutch slip adjustment. With this plate design, pressure is focused on the circumference of the clutch pads for increased efficiency.

Motor Plate & Spur Gear Protector.

The super lightweight motor mount is machined from Swiss 7075 T6 aluminum and is a universal design that fits both Carpet and Dirt Edition gear boxes.
The molded composite gear protector prevents contact between the spur gear and the body. Moulded from strong, lightweight material, the cover helps to protect the body shell and spur gear, and it allows the body to be mounted lower without interference.
The motor plate is universal for both Dirt and Carpet edition.

Roll Center Holder.

Roll center holder fits the LCG gear box and features multiple roll center positions. The roll center holder also serves as the rear anti-roll bar mount.
An optional rear aluminum roll center holder features roll center positions in between the stock positions for additional tuning choices.
The roll center holder is universal for both Dirt and Carpet edition.

Drive Shafts.

Dirt and Carpet edition feature different length driveshafts to match the arm length, outdrive width and hub position of each version.
Manufactured from world-renowned HUDY Spring Steel™ the drive shafts feature 2.5mm drive pins for maximum drivetrain efficiency. The drive shafts are some of the thinnest yet most durable drive shafts used in electric off-road cars. Treated with a proprietary hardening process, the drive shafts provide unbeatable lifespan and reliability.

Rear Uprights.

Rear uprights feature aluminum roll center mounts with updated roll center position.
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 the axis of the driveshaft joint to help generate more traction and increase stability.
There are three different uprights available: hard (included), graphite (optional), and aluminum (optional), each suitable for particular track conditions.

Chassis Brace.

The front lower chassis brace is part of the Multi-Flex™ system that influences flex and handling. There are two different chassis braces available – medium (optional) and hard (included), each suitable for particular track conditions.  The brace is mounted directly to the chassis to hold the entire front assembly and front suspension, including the front protection bumper.
An optional medium-hardness composite molded brace is suitable for low- and medium-traction tracks.
The included brace is moulded from hard-hardness composite and is suitable for high- and very-high-traction tracks.

Rear Suspension Arms.

The rear suspension arms have different design specifically for the Dirt and Carpet editions. The longer suspension arms have geometry for improved consistency and handling.
Dirt edition – Special design of the art allows to move arm more frontwards that moves the weight into the rear of the car. The rear upright position in the arm is moved forward with an extensive range of wheelbase adjustment.
Carpet edition – supper narrow arms used from XB4 allows to move the arms more frontwards that moves the weight into the rear of the car.
There are two different rear suspension arm hardness alternatives available:  hard (included) and graphite (optional), each suitable for particular track conditions.

Front Suspension Arms.

Front suspension arms have a universal design for both Dirt and Carpet editions. The suspension arms have geometry for improved handling and the repositioned lower shock mount locations lower the shocks and shock tower to decrease the CG.
The design of the arm allows for a greater range of adjustments. The opening for the C-hub is larger for greater wheelbase adjustments possibilities compared to previous versions.
The shock mounting location is wider to allow use of the eccentric shock pivot ball to move the shock absorber between two different positions creating different shock angles that affect traction and corner speed.
The arm also features a mounting position for the optional front anti-roll bar.
There are two different front suspension arm hardness alternatives available:  hard (included) and graphite (optional), each suitable for particular track conditions.
The front arms are universal for both Dirt and Carpet edition.

Fully Adaptive Steering System.

The XB2 steering system was redesigned for both high traction and low traction conditions. The Fully Adaptive Steering System has many new parts including the steering arms, steering plate, servo horns, steering linkage, and pivot balls. The same components are included in both Carpet & Dirt Editions but allow different build configurations to alter the geometry depending on the track’s conditions. Smart & easy.

The Fully Adaptive Steering System allows easy changes to the steering assembly that transform the geometry and alter the handling characteristics of the XB2. No extra parts are required as all parts are in the kit.
Configuration for low traction conditions:
Steering plate oriented frontwards
Linkage installed rearwards
Servo link mounted on steering plate
With this configuration the outside wheel turns less which provides less steering and makes the car easier to drive.
Configuration for high traction conditions:
Steering plate oriented rearwards
Linkage installed frontwards
Servo link mounted on left steering arm
With this configuration the outside wheel turns more which increases more steering and makes the car more aggressive.

Front Roll Center Holder.

The wider front roll center holder was updated with an additional outer position that is especially suited for high speed tracks where less front end dive is required.
The design of the roll center holder was also updated for mounting the optional front anti-roll bar directly on the holder.
The front roll center holder is universal for both Carpet and Dirt Editions.

Steering Blocks.

The Carpet Edition now features the new 3 slots steering block extensions better suited for high traction conditions. These extensions allow the wheels to turn more and provide more steering in corners. The overall travel was increased so the car has more steering in tight corners.
The Dirt Edition includes the 2 slots steering block extensions more suitable for lower traction conditions.
The composite blocks are molded from a special composite mixture for maximum strength.
There are three different steering blocks available – medium (option), hard (included) and graphite (option) – which are suitable for various track conditions

Anti-Roll Bars.

In specific track conditions when the front or rear of the car need more stabilization, an optional anti-roll bar (#322400 or #323400) can be easily installed. The anti-roll bar is mounted to the front/rear roll center holder and can be adjusted via the included linkages.
Anti-roll bar wires of different thicknesses are available for fine-tuning with the wire thickness laser-engraved on each bar for easy identification.


The front shock absorber bodies and shock shafts are longer by 2mm to maintain the correct down travel with the new tower. Combined with the new shock towers and suspension geometry, these changes increase steering and improve jump landing.
The big-bore shocks are membrane free, but still allow for easy, consistent building and rebound control using the bleed-screw shock cap design.
The aluminum body and lower cap are all machined from premium Swiss 7075 T6 aluminum.
The shock shafts are machined from special steel material, precision hand-ground for maximum smooth operation, and additionally hardened for an increased lifespan.


The XB2 shock absorbers feature eccentric lower mounting pivot ball that changes the angle of the shocks when mounted in the arm. The angle of the shocks affects the traction the car will create and the way the car jumps and lands. Reversing the orientation of the lower pivot ball with alter the angle of the shocks for another tuning adjustment.
The SLP (Super Low Profile) shock absorbers offer superior performance, especially for high-traction conditions where together with the SLP shock towers there is reduced chassis roll, thus allowing the use of more droop for better landings.
The shocks are membrane-free while still allowing for an easy and consistent build with rebound adjustment using a bleed-screw shock cap design.
Shock extension is limited using composite shims under the pistons. Maximum compression is limited using composite shims under the shock collar.
The shock absorbers are universal for both Dirt and Carpet edition.