Description
TECH ER30 Rear Shock
Arctic Leopard-Specific Fitment
310 × 85 mm: Fits Arctic Leopard EX700 and EX800 models
Fitment
- Arctic Leopard EX700
- Arctic Leopard EX800
The TECH ER30 Rear Shock is designed to be a perfect match in performance and balance with the TECH E39 E-Moto Front Fork! This rear shock is specifically designed for the Arctic Leopard platform and delivers improved rear wheel traction, support, and tunability for aggressive off-road riding.
Included in Package:
- TECH ER30 Rear Shock
KEY Specs:
- Specifically designed for lightweight E-Motos.
- Available in three different lengths.
- CTS tuning technology - rider-changeable valves to easily tune damping characteristics.
- Preload adjustment.
- Rebound adjustment.
- Low-speed compression adjustment.
- Two different spring rate options.
- Piggyback reservoir for optimal temperature control.
- Internal floating piston with double seals to ensure consistent performance.
- High-profile MDU bumper for end-of-stroke progression and bottom-out resistance.
- Designed and assembled in Tuscany, Italy.
Performance Upgrade
WHAT IS IT?
- A piggyback reservoir shock specifically designed for lightweight E-Motos.
- Available in three sizes:
- 283 x 80mm for the E Ride Pro 3.0 & SR, Surron Light Bee, Ventus One / Ventus One Plus & 79Bike Pro / GT
- 288 x 85mm for Talaria MX3, MX4, MX5 and Altis Sigma models
- 310 x 85mm for Arctic Leopard EX700 & EX800
WHY DID TECH MAKE IT?
- To fill the gap in the market for lightweight E-Motos and provide an upgrade that delivers performance and durability.
- To be paired with the E39 Fork and offer the perfect balance for lightweight E-Motos.
HOW DID TECH MAKE IT?
- Tech combined their existing technologies from both the mountain bike and motorcycle sectors.
- A 30mm piston and large diameter oil circuit improve sensitivity, reduce friction, and provide better heat management.
- The shock features CTS tuning technology from their mountain bike suspension range to increase adjustability beyond what competitors offer.
- Internal floating piston design with double seals prevents oil and gas mixing, ensuring consistent performance and increased durability.
- DU bushings offer secure, low-friction mounting and long-lasting durability for demanding off-road use.
WHAT DOES IT DO?
Compared to the stock shock, it provides:
- Better support for off-road riding
- More sensitivity and grip from the rear end
- A wide range of tunability
- Increased reliability and durability
Compression Tuning System (CTS)
The Compression Tuning System (CTS), developed by Formula & TECH Suspension, is a set of easily interchangeable valves that allow riders to fine-tune compression damping to match their riding style.
CTS makes suspension tuning quick, simple, and completely reversible — no specialist tools or workshops required.
Simply remove the shock from the bike, release the pressure from the reservoir, and swap out the CTS valve.
This allows riders to tune their shock for trail riding, motocross, technical enduro terrain, or dirt jumps without visiting a suspension specialist.
CTS provides the freedom to experiment with settings while always offering a simple way to return to a baseline setup.
The CTS system puts the benefit of TECH Suspension’s tuning expertise directly into your hands.
Available CTS Valves

Gold – Light Compression (optional, for smoother terrain)
Orange – Mid Compression (standard, factory-fitted)
Green – Firm Compression (optional, for aggressive riding)
As the curves in the graph show, the different valves provide unique damping profiles ranging from softer and more compliant to firmer and more reactive.

Can I change the spring rate on my shock?
Yes, the available spring rates are:

We recommend having your spring changed by a professional mechanic.
How do I choose my spring rate?
Choose your spring rate based on your weight and riding style. Riders who ride aggressively on rough terrain and/or with larger jumps should consider moving up one spring rate. If in doubt, consult a suspension specialist for setup assistance.
How often does the shock need serviced?
As a general rule, we recommend:
- Check sag and air pressure monthly
- Check piggyback reservoir pressure every 3 months
- Oil change and complete inspection annually
Please note that service intervals depend on riding intensity and terrain. Racers and aggressive riders should shorten service intervals accordingly.





