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ext arma mx
ext arma mx ext arma mx right side ext arma mx left side ext arma mx compression & hydraulic controls ext arma mx rebound control ext arma mx inside view sur ron light bee blue linkage titanium bolt kit
By EXT

EXT Arma MX Shock

1169.00 €

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Details

The EXT Arma MX is indisputably the very best performing rear suspension for dirt e-bikes and is a plug & play upgrade for Sur Ron and Talaria.

Engineered from the ground up to answer the specific needs of our light electric motos, EXT succeeded into bringing full size shock performance to our light dirtbikes.

Featuring best in-class sensitivity, the Arma MX offers a bottomless feeling as it will never bottom hard thanks to its bleeding edge hydraulic bump-stop control. On top of that, it is highly tuneable to perfectly match the most demanding rider’s needs.

Shipping and returns

We ship worldwide (batteries are limited to Europe). Products indicated as being in stock are shipped in less than 72 hours after you place the order. Our warehouse is located in France, so transport cost and time may vary depending on the delivery country.

Changing one’s mind is human. That’s why you have up to 30 days after the delivery of your order for a return. Just let us know and we will take care of all the details.

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We offer different payment methods to accommodate your preferences: Credit Cards, PayPal, Wire Transfer & Klarna.

Your order is automatically validated as soon as the payment is confirmed. In case of a return, your refund goes to the payment method used for the order.

Spring Rate (lbs)

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Description

Engineered with a relentless focus on performance and control, the Arma MX sets new standards for robustness and support. The Hydraulic Bottom-Out Circuit (HBC), combined with the other 3 tuning adjustements (LSC-HSC-LSR) offer an expanded tuning range for perfect behaviour on any terrain. This, in turn, allows riders to opt for softer spring rates while maintaining exceptional support and end-stroke characteristics.

The Key Features of the Arma MX Shock are:

  1. Four-Way Adjustable: Control your ride with precision using Low-Speed Compression (LSC), High-Speed Compression (HSC), Low-Speed Rebound (LSR), and Hydraulic Bottom-Out Control (HBC).
  2. High-Flow Design: Equipped with a 29mm main piston and a 24mm valve piston for superior fluid dynamics.
  3. Robust 14mm Shaft: A 14mm shaft, 50% larger than most other coils on the market, is built to handle large side-loading events.
  4. Engineered Rebound Circuit: Separates bump and rebound oil flow, featuring an ultra-low friction coating for optimal performance.
  5. User-Adjustable HBC Technology: Fine-tune your ride with our enhanced Hydraulic Bottom-Out Control.
  6. Low Reservoir Pressure: Maintains maximum sensitivity and minimizes cavitation with a low reservoir pressure of 55 PSI.
  7. Custom Hydraulic Setup: Tailored to your bike and riding style, ensuring a personalized shock experience.
  8. Low Hysteresis: Delivers high dynamic response thanks to minimal hysteresis.
  9. High Turbulent Flow: Ensures progressive dampening and mid-stroke support with high turbulent flow characteristics.
  10. Low Friction Seal: A low-friction seal minimizes resistance for smoother operation.
  11. Thinner Bottom-Out Bumper and Debris Clearing Washer: Designed for durability and debris management.
  12. New Low-Profile Rebound Knob: Easily swap springs with our redesigned knob.
  13. Included Lightweight Spring: Comes with a 400lb, 450lb, 500lb, 550lb, or 600lb spring.
  14. Sur Ron and Talaria Specific Mounting Hardware: Effortless bolt-in installation with hardware tailored for Sur Ron & Talaria electric bikes.

Look no further, elevate your riding experience with the Arma MX Shock, meticulously crafted for performance enthusiasts who demand the best from their suspension.

Spring rate guide

The spring rate determines the shock’s stiffness and will depend on your weight, personal preference and type of riding. For smooth and mellow enduro, you can opt for a lighter sping whereas agressive riders and MX riders might want to go one level higher.

In addition, we recommend going one level above the normal rate if you have the MTO Racing Swingarm or another aftermarket swingarm that is longer than the stock. I (Quentin) personally like good support so I went with the 450 lbs spring as I weight 50kg.

Pilot’s weight Spring rate
under 70kg (150 lbs) 400 lbs
70kg – 80kg (150 – 190 lbs) 450 lbs
80kg – 90kg (190 – 220 lbs) 500 lbs
90kg – 100kg (220 – 245 lbs) 550 lbs
Over 100kg (245+ lbs) 600 lbs

Technical details

Size 267 x 87
Body 7075 T6 aluminium with a 14 mm shaft
Piston 29 mm high flow chromed steel piston combined with a 24 mm valve piston
Eyelets bespoke eyelet design with spherical bearings
Tuning 4 tune settings: High and Low speed compression, end of stroke (HBC) and rebound
Compatibility plug & play with all bikes to the 267 x 87 MTB standard (Sur Ron LB, Talaria Sting…)

As a fellow rider, I’d say these would be great additions 🤙

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