Suspension Geometry Base on Project 4X touring Car,the 2016-2017 IFMAR World Championship 3rd place 2016 EFRA EC A-main finalist, 2017 Multiple ETS A-main finalist


The chassis is based on the popular Medius mid motor design, using a light weight and strong 1 piece motor mount concept, without any interference between the front and rear chassis flex while still allowing center flex adjustability. The advantage for this style of design is to allow maximum flex capabilities without impacting the drivetrain, meaning smoother power delivery, more consistency and less chance of stripping spurs.


After 4 years of learning of the Project 4x, we took what we learn and evolve into what you see today. The all new Serpent X20 Medius. Using the same Pivot ball style suspension and geometry from the 4x, the New X20 Medius is a combination of the S411, 4x and what currently trending Mid motor design. With the advantage of the wide adjustment in a easy to understand approach, Customers can now enjoy our R&D result for the past 4 years of the 4x with a normal suspension system.

All New Bulkhead with tradition Cam type belt adjustment

Upper Arm mount and 1 piece shim system

Medius concept Upper deck

Using the Medius design, having Split cut front for easy install while the rear are design and plan to let customer custom adjust flex by leaving room to cut and mount post to adjust flex.

All New 50mm shock dampers with 12mm shock body and Universal shock-springs

All new Shock system using the Eryx’s traditional style to give user the easy understand back into the Serpent Touring car platform. X20 focus on making the best fitment this time by create the smoothest Leak proof x ring. After countless of fitment test and x ring swell test, the X20 shock is the game changer.

Medius Motor mount for complete flex control,

Extremely low 7075 T6 aluminium motor mount, Working with the Medius design, this motor proof to separate the flex by the motor and the front and rear chassis flex.

All new impact proof bumpers and new body post position

In the front a strong bumper-set using a large size but light foam bumper which is sandwiched between the lower composite bumper and upper graphite holder. The flexible moulded body posts with swivel-system go all through. Optional body height systems are available.

Narrow Bulkhead Design with ball bearing sway bar mount

Multiple center Flex screws adjustment for chassis stiffness

Optional Rear Center Flex adjustment with butterfly style stiffener

Ultra Low sway bar position

Understanding the Eryx’s sway bar system and combine with the 4x concepts, the x20 LCG Anti-roll bar system able to lower the sway bar point on the bulkhead without limit it’s leverage point by connecting to the upper arm. A smart system which achieve the best of being lcg and retain it’s best performance.

All New Front and rear Suspension arm with the X20 “X brace” stiffener

All New ackerman steering system

The ball raced aluminium steering system consists While adopter the latest ackerman and 2 point crank system steering rack.


The kit contains a Serpent logo decal sheet and a X20 logo-sheet.


High quality, high precision lubricated long-life bearings made of hardened steel throughout.


High quality steel fasteners for durability. Minimized number of different screws for ease of assembly and maintenance


The full color manual is supplied on a nice carbon look USB stick and the latest version and updates can be downloaded from the Serpent website. The manual features an extensive assembly explanation as well as all exploded views. The exploded views are active, so when clicking a part number it will take you to the right part number in our website.


As set-up sheets a blank, a default and an editable pdf file is supplied and updates and set-ups from team drivers are online in our website, too


Serpent is preparing some videos which show the key features as well as the key assembly steps and how to set up and maintain the X20.

X20 car design





Serpent Medius X20 Carbon Fiber 1/10 Electric Touring Car #400003

SKU: 400003
  • Using the last 4 years of development the X20 keeps the successful 4X proven pivot ball style setup allowing for easy and fast adjustments to camber, toe, track width etc. A new 2 point steering crank system has been implemented for more ackerman adjustment, this coupled with 4X geometry guarantees race success!

    Continuing from what we have learnt from other RC platforms we now introduce a new suspension arm design, allowing the ability to adjust arm flex! Multiple styles of carbon and other materials will be available as optional items to fine tune your X20’s grip and feel for whichever track you are on.

    Understanding the Eryx’s sway bar system then combining with 4X concepts, the all new X20 Low Centre of Gravity (LCG) Anti-roll bar system is able to lower the sway bar point on the bulkhead without limiting the leverage point by connecting to the upper arm. A smart system which achieves the best of being LCG while retaining optimal performance.

    The X20 features a more traditional approach to the shock absorbers in comparison to the 4X, making it more user friendly with less complication. We have focused on producing the highest quality components to ensure the best fitment. Utilizing our smoothest leak proof X ring we believe the X20 shock absorber is a game changer!


Contact - Ozzie

TEL: 631:513:7732

EMAIL: islandhobbynut@gmail.com


New York

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