ER30 E-Moto Shock | by Formula / TECH Suspension | for Lightweight E-Motos

Overview

When your rear suspension is doing its job, the whole bike feels calmer, faster, and more predictable. The ER30 (E30) E-Moto Shock is a high-performance rear shock built to deliver a smart balance of support and sensitivity, so your bike stays planted under power but still tracks small chatter and braking bumps. Formula / TECH Suspension designed and engineered this shock specifically for lightweight E-motos, where weight, torque, and off-road impacts demand consistent damping and dependable heat control.

Why It Stands Out

The biggest advantage here is how quickly you can tune the ride. With CTS (Compression Tuning System), a patented Formula / TECH Suspension innovation, you can make fast, tool-free changes to low- to mid-speed compression behavior. That means you can firm it up for jumps, g-outs, and higher-speed hits, then back it off for trail traction and comfort, without turning the shock into a science project.

On the performance side, the piggyback reservoir boosts oil volume to help the shock stay consistent when rides get long and aggressive. Pair that with the Internal Floating Piston (IFP) using dual / double seals, and you get damping that stays stable ride after ride, plus long-term reliability because oil and gas stay separated like they should.

Custom Adjustability

• Pre-load adjustment

• Rebound adjustment

• CTS (Compression Tuning System), patented Formula / TECH Suspension innovation for fast, tool-free tuning of low- to mid-speed compression damping

Spring Rate Options

• 78.8 N/mm (standard), suitable for average-weight riders

• 105.6 N/mm (optional), recommended for heavier riders, harder riding conditions, aggressive terrain, or rougher setups

Performance Features

• Piggyback Reservoir: Increased oil volume improves thermal stability during long or aggressive riding, and enhances thermal stability under high load.

• Internal Floating Piston (IFP) with Dual / Double Seals: Prevents oil and gas mixing for consistent damping and long-term reliability.

• High-Profile MDU Bumper: Enhances end-stroke progression, increases bottom-out resistance, and delivers a more progressive end-stroke feel. Derived from TECH trials suspension for improved control when you hit the limits.

• DU Bushings: Provides smooth, low-friction articulation, secure mounting, and excellent durability for high-load off-road use.

Compatibility and Fitment

Note includes Tech linkage only to be used for surron/79/ventus

You cannot use any other linkage beyond the tech on this (example warp 9,prickly etc) 

283 × 80 mm Fitment

• E-Ride Pro 2.0 / 3.0 & SR (direct mount)

• Surron Light Bee (linkage mount )

• Ventus One / One Plus (linkage mount )

• 79 Bike Pro / GT (linkage mount )

How This Improves Ride Quality

Rear shock tuning is where lightweight E-motos really come alive. More controlled compression helps the bike stay higher in its travel under acceleration and in corners, which keeps geometry consistent and reduces that wallowy feel. Meanwhile, properly set rebound helps the rear wheel recover quickly without kicking, so traction stays predictable on loose climbs, braking zones, and choppy trails. The ER30’s CTS system makes those changes easy, so you can dial the bike for your terrain instead of living with one compromise setup.

Best For

• Riders who want a set-and-adjust rear shock that can quickly adapt to different trails, jumps, and speeds

• Anyone overheating stock suspension on longer, faster, or rougher rides, the piggyback reservoir helps keep damping consistent

• Riders pushing harder into g-outs, landings, and square-edge hits who want more bottom-out resistance from the high-profile MDU bumper

Great Fit For These Rider Types

• Trail and enduro-style E-moto riders who want more traction and control

• Jump and flow-track riders who need more support and consistency

• Heavier riders or aggressive riders stepping up to the 105.6 N/mm spring option

Fitment: Tech ER30 E-Moto Rear Shock | Suspension by Formula | for Eride Pro, Surron, 79 bike, Ventus

• Surron Light Bee X

• Segway X260

• Segway X160

• 79bike Falcon-M

• Ventus one

• Ventus one+ plus

• Eride Pro

• Eride pro S

• Eride pro SS 2.0

• Eride pro SS

• Eride pro SS 3.0

• Eride pro SR

This product may be compatible with more models than shown above. Please see the product description for full details, or contact us for help with fitment.