At the heart of XRAY's philosophy is a firm commitment to perfection in engineering, design, performance and support… all made possible by state-of-the-art in-house manufacturing. The RX8 is the epitome of perfection that is typical for XRAY.

Dipl. Eng. Juraj Hudy
XRAY Chief Designer

The all-new chassis design features new flex characteristics and uses M4 screws throughout for comfortable & reliable assembly. The milled-out sides of the chassis allow for a laydown servo mounting configuration, for the lowest possible CG. Thanks to the overall significantly lowered CG of the electronics, the car is more dynamic and has improved cornering speed.

The chassis has cut-outs for the bulkheads, arm mounts, radio plate mounts, and front layshaft holder for perfect fitment, to ensure these parts will always mount into the same precise position.

The outer edges of the chassis are beveled, and screw holes are countersunk to provide a smooth lower surface for maximum clearance during cornering.

The lightweight chassis is CNC-machined from 5mm premium Swiss 7075 T6 aluminum, strategically machined in low-stress areas to make it as light as possible without affecting strength or rigidity.

The front and rear aluminum CVD wheel axles are now machined from 7075 T6 hard coated aluminium material, which reduces the overall rotating weight of the drivetrain, for improved efficiency and acceleration.

The front aluminum one-way axle is now hard coated for improved durability & reliability.

The rear solid axle, as well as the front outdrives of the one-way axle are lightened for a reduced overall rotational mass of the drivetrain, which improves efficiency and acceleration.

All outdrives are manufactured from HUDY Spring Steel™ and are specially ground for maximum precision. All pulleys have self-cleaning holes to reduce buildup.

The front 1-way and rear solid axle are small and light, ensuring super-low rotating mass and lowest CG. The super-lightweight front 1-way bearing is inserted directly in the axle, and the axle body is machined from Swiss 7075 T6 aluminum.

The tiny drive shafts are manufactured from HUDY Spring Steel™, the most effective drive shaft material by the industry leader HUDY. Self-developed HUDY Spring Steel™ ensures the longest drive shaft life, maximum strength, and lowest weight. Hardened with a proprietary process, the drive shafts provide unbeatable lifetime and reliability.

The new rear layshaft is extended to align with the center belt offset, specifically designed for medium-size batteries, and is strategically lightened to minimize rotating mass.

The large gear carrier has been redesigned to ensure the gear protrudes as little as possible from the motor mount, improving integration and protection.

Precision-machined aluminum spacer bushings are included for both the front and rear layshafts to accommodate their increased lengths.

Additionally, a super lightweight aluminum pulley adapter is carefully machined to further reduce rotating mass and enhance drivetrain efficiency.

Thanks to perfect molding, bearings fit into the steering blocks without any extra play for maximum stability and steering.

The steering block extensions are now carbon machined, are super light and strong, which reduces unsprung weight, and improves reliability. The steering blocks are molded from a hard composite mixture to keep suspension geometry consistent and to provide stability and accuracy.

Thanks to perfect molding, bearings fit into the steering blocks without any extra play for maximum stability and steering.

The included 0° kingpin steering blocks allow installation of optional carbon aerodynamic disks that can improve both low & high-speed steering and improve stability in high-speed corners.

The steering block extension is mounted to the steering block and features 3 different Ackermann positions. The kit includes 2mm bump steer shims for optimized bump steer characteristics and is adjusted by adding or removing shims if a different steering feel is needed.

Redesigned rear shock geometry includes shock absorber mounted more outside of the wheel which increases stability of the car. The uprights were redesigned & machined to allow the shock absorbers to be mounted on new redesigned carbon shock mounting extensions. The shock mounting extensions are now machined from carbon, to reduce unsprung weight.

The carbon rear shock absorber holder features new shock position to accommodate the shortened shock absorbers to improve the stability of the car.

The shock absorbers feature shorter lower ball joints to accommodate the new geometry.

Front suspension features all-new shock mount extensions with more outside wheel position for increased stability. The downstop limiting carbon parts are mounted in one piece directly on the front arm, which make downstop adjustment more precise as well as reduce unsprung weight of the suspension.

Shock mount extensions are now machined from carbon instead of alu to reduce unsprung masses.

Front anti-roll bars have redesigned shape for improved operation. A tighter placement of aluminium collars in the ball-bearings allows for more precise operation of the anti-roll bars and the alu D-profile clamp allows for collision-free movement of the anti-roll bar.

Redesigned upper arm holder features a guide for the ball-bearing equipped body holder. The rear upper arm has been extended for improved ball joint guidance. Rear body holder is now ball-bearing equipped for super smooth & friction-less operation.

All-new ball-bearing equipped belt tensioners were added to the platform to increase reliability and prevent belt skipping. New front belt tensioner ensures proper front belt tension, and two side tensioners ensure maximum free side belt operation with minimum resistance.

Front layshaft stand features integrated ball-bearing equipped front belt tensioner and carbon plate with belt tensioner for side belt.

Aluminum stand for 2nd speed shaft was redesigned and includes attachment of the carbon plate for the middle belt tensioner.

New aluminum engine mounts are redesigned for increased strength for more reliable mounting of the engine to the chassis plate.

The redesigned radio tray supports two battery sizes, accommodating mid-size batteries by default and allowing short batteries to be installed using the included additional holders.

An integrated cable organizer can be mounted to the tray for clean and efficient cable management. The front section of the tray features adjustable bushings that enable fine-tuning of the Multi-Flex settings.

Radio plate allows for changing the bushings above the servo saver to alternate between a fixed or flexible front attachment, adjusting the overall flex level of the car, and is supported by new aluminum radio plate stands designed to enhance the multi-flex system.

The unique carbon radio plate features a new flex system for quick & easy changes between soft or stiff flex settings for fine tuning the handling.

The radio plate also allows for changing the bushings above the servo saver to alternate between a fixed or flexible front attachment of the radio plate, which adjusts the overall flex level of the car.

The all-new lightweight aluminum electronics plate allows for quick and convenient speed controller changes. It is mounted on a new lightweight carbon center chassis plate and features a precision-milled pocket to further reduce weight without compromising strength.

The new radio plate & one-piece alu servo holder allow for a laydown steering servo configuration to lower CG. 

The servo saver features a key-lock system that ensures the servo saver will stay secured even during chassis flex in extreme conditions.

The centralized servo saver is ball-raced for super-precise and smooth operation, with an adjustable spring collar for fine tuning of the preload. The servo saver also features easily adjustable Ackermann positions that greatly influence the steering characteristics, allowing the RX8 to be tuned for all driving styles and track conditions.

The front carbon upper brace is mounted to the center stand, allowing the bumper holder to move independently and prevents excessive deformation in crashes.

The front lower bumper features extra body mount positions to fit all popular racing bodies. The aluminum front body posts use eccentric mounting for front/rear mounting positions. 

New front left aluminum bulkhead features stronger M4 set screw mounting of the muffler, for a more secure and reliable mounting. The aluminum stand for 2nd speed shaft was redesigned and includes attachment of the carbon plate for the middle belt tensioner. Rear suspension holder was also redesigned and is mounted with M4 set screw for secure mounting.

The lower profile of the front bulkheads allows the radio tray to sit lower for improved CG. The upper shock mount position is also integrated into the bulkhead eliminating the need for a separate shock tower and creates an additional flex adjustment for the front suspension using included cross brace. The innovative front upper shock mounting system installs the front shocks directly to the upper clamps using shims for setup adjustments.

The lightweight front upper arm holder features an additional flex setting by connecting the holder to the front bulkhead from the side to reinforce the assembly. The upper arm holders use the smaller eccentric bushings and spacing shims from the NT1 for a more compact design to create the space to lower the radio tray height and reduce the overall CG.

The receiver box was completely redesigned. The new lightweight shape is ultra-compact and can be positioned as low as possible and closer to the chassis centerline for better weight distribution.

The rear suspension holders are mounted with 2 large screws instead of 4 small screws for maximum reliability. The holders’ lowest position is very low, to help generate the most amount of traction when needed. The chassis provides adequate clearance for this low position. The rear wheelbase setting is adjusted by moving the upper and lower arms along the long suspension holder pins.

Long rear suspension holder pins for upper and lower suspension allow moving the position of the rear arms for a rear wheelbase adjustment.

The front & rear lower suspension holders are fully independent from the bulkheads, mounting directly to the chassis to maximize traction and make the car easier to drive.

The suspension mounts are CNC-machined from premium Swiss 7075 T6 aluminum to provide the lightest & strongest framework for the car.

New longer front lower pivot balls are used to offset the narrower front suspension pivot point and retain full width adjustments.

The RX8E pivot ball suspension contains precision pivot balls that are specially hardened to better withstand harsh crashes and extend their lifespan. A total of eight (8) pivot balls are included and are captured by strong M10 composite nuts to minimize weight and give smooth suspension movement.

Standard pivot balls are made from steel for maximum durability and lifespan. For those who are focused on minimizing unsprung weight, optional lightweight aluminum and titanium pivot balls are available.

The rear uprights are molded from a hard composite mixture to maintain proper suspension geometry and to provide maximum stability and accuracy.

The hard composite mixture used for the rear uprights keeps geometry consistent even in the harsh track conditions found in 1/8 racing. This provides maximum stability and accuracy.

The small, compact rear uprights are very strong due to this special composite mixture. Thanks to perfect molding, bearings fit into the rear uprights without any extra play, giving maximum stability and handling.

The rear uprights can use the optional carbon aerodynamic disks that can increase rear traction and stability in high-speed corners.

The rear uprights feature two easily adjustable upper roll center positions that are used for traction adjustment. The uprights also feature two body mount adjustment positions depending on the type of body used. Short and long pivot ball joints are also included for optimum set-up adjustment.

To improve out of the box performance in all standard racing conditions, the choice of the anti-roll bars was revised with the front 2.4mm and rear 2.6mm anti-roll bars and appropriate roll bar bushing sizes.

The anti-roll bars have a shape to match the bearing bushings. Mounting the fixed front anti-roll barholders without the eccentric bushing makes the down-stops easier to set.

To improve out of the box performance in all standard racing conditions, the choice of the anti-roll bars was revised with the front 2.4mm and rear 2.6mm anti-roll bars and appropriate roll bar bushing sizes.

The anti-roll bars have a shape to match the bearing bushings. Mounting the fixed front anti-roll bar  holders without the eccentric bushing makes the down-stops easier to set.

To increase the reliability and strength, the rear drive train features a wide 9mm PUR belt.  The PUR®-reinforced high-efficiency low-friction drive belts ensure that power is properly and efficiently transferred to all drivetrain parts.

To provide a perfect feeling out of the box for most standard track conditions, the included shock springs are the C7.5 springs in front, and C5.6 for the rear. The C7.5 provides maximum stability, and at the same time more steering into the corner.

The RX8 springs, like all the other XRAY springs, are manually measured, selected, and matched into pairs to guarantee precisely equal length and tension characteristics.

New rear aluminum bulkheads have a 2mm wheelbase adjustment for the lower and upper arms for easy traction tuning.

Wheelbase can be easily adjusted using clips on the front suspension. Moving the arms towards the front or rear can also be used to fine-tune weight balance.

The motor mount bulkhead is moved together with center belt more outside to create more space for the motor to allow to mount various motors more comfortable.

The rear body mount holder allows the mounting of all popular racing bodies and meets all rules. The reinforced body mount is reliable and durable to withstand hard crashes.

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.

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.