All-new T4 Features in Detail:

Completely redesigned all-new T4 platform

Designed for highest performance at all levels of racing, with specific attention paid to the smallest details

New thinner 2.2mm graphite chassis designed for increased traction, steering, stability, and improved cornering speed

New graphite top deck for increased in-corner steering and traction

New super low profile shock towers to lower the CG and improve stability of the car

New SLP (super low profile) aluminum shocks to further lower the CG and improve stability of the car

New 4S shock springs developed & designed for the new SLP shocks

New bulkheads, lightened and strategically placed closer to the center of the chassis to provide more steering and traction for the car

New super low profile motor mount machined separately from layshaft bulkheads and featuring a new tweak free mounting system

New upper bulkhead clamps designed for the new super narrow placement of the bulkheads

New redesigned front alu lower suspension holder designed for easier access for Ackermann adjustments

New rear alu lower suspension holders, redesigned for increased durability and moved closer to the chassis centerline to increase steering

New alu steering plate for dual arm steering system with central mounting of the steering linkage

New servo mounting system for improved balance and for elimination of unwanted tweak

New servo saver with additional positions for servo linkage mounting

New anti roll bars revised to fit super narrow bulkheads

New rear uprights from hard material for increased stability of the car

New composite hubs for differentials to fit super narrow bulkheads

New front body mounts shortened to lower CG

New low profile foam bumper to lower CG

New race tested and tuned shock positions

New rear 50mm drive shafts

Main Features:

New T4 platform is the next evolution of the hugely successful T3 platform

Chassis designed to provide maximum traction and steering

Chassis specifically designed for the newer generation of heavier electronics and batteries

Redesigned top deck for super narrow bulkheads, providing more rear traction and in-corner steering

SLP aluminum shocks have been shortened by more than 7mm to provide maximum stability under all track conditions while reducing traction roll under high traction conditions

C2.7 front and C2.3-2.6 rear progressive springs are shortened to fit new SLP shocks and the spring rates have been optimized to provide maximum steering and traction

3mm thick graphite shock towers shortened by 15mm to maximally lower the CG

Completely redesigned bulkheads have been lightened and the mounting system has been revised to provide maximum traction, steering and stability

Motor mount bulkhead features the lowest possible motor position, compatible with all standard brushless motors

Unique super light and low profile motor mount is designed to lower CG, eliminate tweak and move the motor 3mm closer to the centerline of the chassis

Rear suspension holders positioned towards the centerline result in narrower rear track-width for more in-corner steering

Servo mount allows the servo to be suspended near the chassis centerline, providing better balance while eliminating tweak and allowing for additional traction

Alu steering plate for dual arm steering system servo linkage to be mounted in the center of the plate, providing quicker direction changes while mechanically limiting steering throw for smoother steering characteristics

Servo saver with extra hole for new steering linkage mount positions

Steering is isolated from chassis flex, ensuring tweak-independent steering for super precise and constant steering characteristics

Narrower anti-roll bar wires designed to fit the new super-narrow bulkheads

Super low profile front bumper made from lightweight, high-resilience foam

Included harder rear uprights for increased stability

LiPo-specific composite battery holders prevent batteries from moving in crashes

Suspension holder system allows suspension arms to be mounted independently from diff bulkheads allowing for elongated chassis flex to generate more traction

Independent suspension holders allow for more precise and fine set-up adjustments via different-thickness shims

Hard front steering blocks increase steering response while decreasing front tire overheating in high-traction conditions

Aluminum rear suspension holders feature integrated toe-in

38/20T (1.9) internal gearing for efficient drivetrain and highest performance

Lightweight black-anodized Swiss 7075 T6 aluminum turnbuckles

Super-lightweight Swiss 7075 T6 aluminum rear drive shafts, hard-anodized, color-coated and laser-engraved, 38% lighter than standard drive shafts

Super-light drive axles with 35% less rotating mass

Super-smooth, super-light maintenance-free composite gear differential

Centered layshaft and split bulkheads provide enhanced balance due to optimum weight distribution of the motor towards centerline, giving quicker left-right transitions

Super-light composite front Solid Axle with XRAY’s own smart quick-change outdrive system for easy outdrive exchange; no servicing or replacement of drive shaft blades needed, translates into reduced servicing costs

Independent front and rear diff height adjustment and belt tension adjustment in both front and rear bulkheads

Long front & rear suspension arms for improved traction and easier handling featuring ideal shock mounting positions

Suspension arms feature integrated anti-roll bar mounts; rear arms feature 3 different anti-roll bar mounts for super-fine adjustment of the rear anti-roll bar

Includes both front and rear anti-roll bars (front 1.4mm & rear 1.2mm)

C-hubs with large openings for quick and easy assembly/disassembly of the CVDs; prevents collision of CVD with C hub in serious crashes (compatible with the ECS drive shafts)

C-hubs available in standard caster angles (2°, 4°, 6°); available in two hardnesses (M – medium, H – hard)

Rear uprights with integrated 0° toe-in prevent suspension geometry changes in serious crashes; available in two hardnesses (M – medium, H – hard)

Steering blocks available in two hardnesses (M – medium, H - hard)

84T 48P spur gear – extra-hard material, wobble-free design

Orange-anodized aluminum parts for stylish and distinctive look

Reduced sensitivity to changing track conditions, giving super-consistent performance during runs

EFRA, ROAR, FEMCA spec compliant for modified and stock racing

Designed specifically for LiPo batteries and brushless motors

Other Specifications:

Rebuildable front CVD drive shafts made from world-renowned, self-developed HUDY Spring Steel™; world’s tiniest yet most durable drive shafts are hand ground for maximum precision. Recommended for use in front for increased durability

Super-lightweight wheel axles manufactured from premium HUDY Spring Steel™

Premium-quality, Kevlar®-reinforced drive belts

Lightweight middle layshaft CNC-machined made from aircraft aluminum

Front upper and lower composite bumper made from specially formulated material to withstand hard impacts

Lower suspension holders with three different roll center positions offer additional ultra-fine roll center adjustment via different-thickness shims

Easily adjustable inboard toe-in using included shims

Easily adjustable wheel offset using optional shims or optional offset wheel hubs (-0.75mm, +0.75mm, +1.5mm)

7075 T6 aluminum wheel hubs

Shock shafts are specially hardened for maximum strength

Shock absorber foam inserts for perfect shock rebound

XRAY self-developed and manufactured 4S springs are manually selected for maximum precision, equal length, and equal damping characteristics

Small, robust steering blocks made from special proprietary composite material, featuring 2 Ackermann positions

Complete set of high-speed, blue-sealed ball-bearings are degreased and lightly oiled for maximum efficiency, individually controlled, selected, and inspected

Aluminum self-locking wheel nuts

Super easy to build, set up, maintain, and drive

Adjustment Possibilities:

Fully-adjustable front and rear suspension geometry: caster, camber, toe, anti-dive, anti-squat, ride height, droop, track-width, roll center, wheelbase

Adjustable gear differential stiffness via oil viscosity

Three different upper linkage positions on upper bulkhead clamps

Roll center height adjustment via shims on upper bulkhead clamps

Adjustable front and rear belt-tension control using quick-adjust system incorporated into bulkheads

Front and rear diff height adjustment using quick-adjust system incorporated into bulkheads

Adjustable HUDY aluminum turnbuckles (steering, front & rear upper links)

Multiple upper and lower shock mounting locations at front and rear

Adjustable Ackermann and bumpsteer

Pre-drilled chassis locations for optional chassis weights in center of chassis

Adjustable front and rear anti-roll bars

Chassis pre-drilled holes for weight balance adjustment

T4 Specs

Class:1/10 electric touring car
Width:adjustable 189 mm
Length:372 mm
Wheelbase:adjustable 256 - 261 mm
Weight:cca 481 g
Ready-to-run weight:cca 1377 g
Chassis:CNC machined 2.2 mm laminated carbon graphite
Shock towers:machined 3.0 mm laminated carbon graphite (front + rear) with multiple shock mounting and camber link roll center positions
Body:not included, uses 190 mm type
Drive Train
Type:dual belt
Main layshaft:lightweight alu middle layshaft with 20T pulleys and 84T 48P spur gear
Drive ratio:1.9
Drive shafts:rebuildable front CVD driveshafts 52mm made from special world-renowned, top-secret, self-developed HUDY Spring Steel™; super-lightweight rear 50mm alu drive shaft s CNC-machined from premium Swiss 7075 T6 and hardcoated for extra durability and stylish looks
Front axle:front XRAY Composite Solid Axle with 38T pulley
Rear differential:gear differential
Belts:ultra-thin Kevlar belts
Bearings:rubber covered high-speed bearings
Front:hard front suspension arms, hard steering blocks
Rear:hard rear suspension arms, hard rear uprights
C-blocks:medium 4° caster blocks
Shocks:XRAY Short Low Profile alu coil-over shocks shortened for improved suspension travel
Camber:adjustable front + rear
Front Caster:4° static (optional 0°, 2° or 6°) with .75° ~ 1.5° adjustability using squat/dive
Toe-in:adjustable front + rear
Downstops:adjustable front + rear
Front anti-dive:adjustable 0° ~ 3°
Rear anti-squat:adjustable 0° ~ 3°
Anti-roll bars:1.4mm front + 1.2mm rear
Ackermann:To change Ackermann angle, use 2 identical shims (of same thickness) between the alu steering plate and ball end
Steering:centrally-positioned dual steering system
Wheels:not included
Tires:not included
Instructions:full-color manual with 3D graphics:
Set-up book:not included, the T2 2-color set-up book (44 pages) can be downloaded and it shows previous XRAY models in photographs contained within it. However, the methodology and set-up theory are the same for all modern touring cars
Packaging:carton box with vinyl bags with parts
Additionally includedHUDY Graphite Grease, Silicone Oils, Authentication Certificate, set-up sheet, parts list & exploded view, decals
Not included:radio system (transmitter and receiver), steering servo, motor, pinion gear, battery pack, speed controller, charger, 1/10-scale bodyshell (190 mm), wheels, tires, inserts, high-strength fibre tape, double-sided tape, CA glue, bearing oil, medium-grade (blue) threadlock, tools
All specifications are subject to change without prior notice. Pre-production prototype is shown, final specifications may slightly vary.
All achievements were gained with T1/T2/T3 platform.
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