Introducing Sirris Suspension. A new era in E-Moto suspension performance is here.

PRECISION PARTS - DURABLE AF - RACE READY

The ultimate high-performance suspension upgrade for your E-Moto. Designed for precision control, race-ready damping, and next-level durability, this pressure-balanced, fully adjustable rear shock delivers exceptional responsiveness on any terrain. With LSC (Low-Speed Compression) adjustability, tunable rebound, and custom spring rates, the R46 transforms your ride—eliminating harsh bottom-outs, optimizing traction, and keeping you in complete control at full speed. Built with type 3 hard-anodized aerospace-grade materials, a 46mm high-flow piston, and a hollow chrome-plated shaft, this shock is made to endure thousands of miles without compromise. Whether you’re launching jumps, ripping trails, or setting lap records, the Sirris R46 Rear Shock is the game-changer your E-Moto deserves. Upgrade now and experience the difference.

Sirris suspension products are purpose-built for E-Moto.

TRANSFORM YOUR BIKE INTO A TRUE SPEED DEMON

The F43 front fork — Super responsive. Purpose-tuned. Pressure balanced. With 246 mm of ultra plush travel, its true moto architecture is made for the most aggressive riding and can be tuned to your liking.

THE PERFECT PAIR

The R46 rear shock - Pressure balanced. Fully adjustable. Optimized for E-Moto.
Revolutionize your bike's potential with harmonized suspension performance front and back. The ultimate suspension package is here.

R46 Rear Shock

EXCEPTIONAL RESPONSIVENESS

Ultimate Suspension Tuning
Fully tunable valving on compression and rebound, with spring rates matched to rider weight and riding type. Adapt your suspension setup for different types of rides,
enhancing overall riding experience.

TUNING WITHOUT COMPROMISE

LSC (Low Speed Compression)
Superior pressure balance and frequency response providing the ultimate overall responsiveness and performance for riders.

Optional DSC note: We're fine tuning the DSC now and it will be available in a couple months (likely early 2025). The DSC will offer a wider adjustment range than the LSC. LSC and DSC fit in the same cavity and are cross compatible (with a rebuild). Both will be offered as service parts. (ie. if you purchase the current LSC now, it can be serviced and tuned to add DSC later. More details to follow)

Made For You
Tunable to any rider style and condition. Personalize to rider weight up to 300 lbs (135
kg) with high-tensile steel spring rate options.

BUILT TO LAST

High Durability Finishing
Type 3 hard anodized body cap, body, reservoir, end cap, spring hardware, and clevis.
Induction heat treated, hard chrome hollow shaft. The rear shock will look new, even
after thousands of miles.

Extremely Easy to Rebuild
Fully serviceable design ensures easy rebuilds and custom tuning.

Direct Swap
Easy installation, 320 mm length (85 mm stroke) bolts directly onto a stock Ultra Bee.

Lightweight
Weighs only 3.9 lbs (1.76 kg) plus spring.

STOCK ULTRA BEE TRIANGLE FITMENT:

For guaranteed fitment on your Surron Ultra Bee, we highly recommend the Sirris rear triangle installed during the shock installation procedure.

The Sirris Shock is designed to offer the maximum possible piston size and still fit within the stock linkage. Tolerances on each stock Ultra Bee vary. Light contact between spring OD and stock triangle may occur. We highly recommend our higher clearance triangle to prevent this.

WARNING: Some aftermarket triangle links may have significant interference that could damage the shock and/or triangle. It’s important to check clearance as you assemble and cycle the suspension. Do not install Sirris shock if any interference is detected. Failure to properly install the shock with proper triangle can lead to a loss of control of the motorcycle which can result in SERIOUS INJURY OR DEATH.

R46 SHOCK 

46MM PISTON, 320MM X 85MM, SURRON ULTRA BEE SPEC

Weight Chart and Riding Style for ordering: