Compact E‑Moto Suspension: CMX F43 Forks

Built to Dominate

New Sirris CMX F43 Forks for Compact E‑Moto.

If you ride any of today’s top compact electric motorcycles—Surron, Talaria, Ventus, E‑Ride, Zero—you know what the front suspension does for handling, confidence, and control. Enter the Sirris CMX F43 fork: a next‑level e‑moto fork built for riders demanding full‑size performance from a compact chassis. This is the suspension upgrade your bike has been waiting for.

What Is the CMX F43 Fork?

The CMX F43 is Sirris’s precision‑tuned, compact motocross‑tuned fork system engineered specifically for compact e‑motos (220 mm travel) that bridges the gap between stock forks and pro‑level motocross setup. Key features:

• • Oversized 43 mm stanchions, hard‑anodized uppers in 7XXX series alloy, extended ~775 mm length for a stiffer, planted front end.

  • 220 mm of front travel—20 mm more than stock on many compact e‑moto models. 

  • A race‑built symmetrical closed‑cartridge damper (CMX tuned) with fully tunable compression & rebound, hydraulic bottom‑out, high‑flow pistons.

  • Billet clamps, premium bushings (Daido), NOK MX seals, chromoly axle, replaceable adapters & spacers for broader compatibility.

In short: strength, durability, control, and high performance—wrapped up in a compact package.

Who It’s For & Why It’s an Awesome Upgrade

If any of this sounds like you, the CMX F43 is built for you:

• • You ride compact e‑moto bikes like the E‑Ride Pro SR / 3.0 / 2.0, Surron LBX, Talaria MX5 / MX4, Ventus One+, Zero XB, etc.

  • You want better front‑end traction, sharper steering precision, and confidence‑inspiring performance over rocks, ruts, whoops, and big landings.

  • You demand durability—a fork that resists flex, stands up to trail abuse, and doesn’t fade under hard use.

  • You upgrade for real suspension performance, not just cosmetics—tool‑free LSC adjustments, high‑flow damping circuits, premium materials everywhere.

Upgrading to the CMX F43 means you get full‑size fork performance in a compact e‑moto platform. The extra 20 mm of travel alone gives more room to negotiate obstacles; the stiffer chassis (oversized 43 mm) means less flex and more responsiveness when you lean into corners or hit rough terrain.

Bikes it Fits On

Sirris has pre‑tuned CMX F43 forks paired with several models—these are “ready to rock” builds:

• E‑Ride Pro SR   > SHOP NOW

• E‑Ride Pro SS 3.0  > SHOP NOW

• Surron LBX  > SHOP NOW

• Talaria MX5 (and MX4 coming soon)  > SHOP NOW

• Ventus One+  > SHOP NOW

• Zero XB (when available)  > LEARN MORE

If your model isn’t listed, there’s still good news: new models coming soon.

One Fork, Any Ride:
Swapping with the Fit Kit

Here’s a game‑changer: the Fitment Kit (sold separately) lets you swap the CMX F43 fork from one bike to another smoothly and easily. No major fabrication. No guessing. Just the right spacers, adapters, shims, and brackets.

Fit Kit includes:

• Axle spacers
• Brake brackets
• Brake‑line shims
• Headset spacers
• Lower bearing spacers

Compatible with all the compact models mentioned above: E‑Ride Pro series, Surron LBX, Talaria MX5/MX4, Ventus One+ and more coming soon.

Swapping takes minutes, not hours—so if you have more than one bike, or you plan to change rides often, this gives you high‑end suspension without having to buy a different fork for every motorcycle. Invest once, ride everywhere.

Why the CMX F43 Is a Standout Upgrade

Here are the top reasons the Sirris CMX F43 is more than “just a fork”:

1. 1. Full‑size race chassis (F43 chassis) shrinking to compact form – stiffness, geometry, travel all upgraded.

   2. Consistency and control – closed‑cartridge damper resists fade, independent oil paths for damping & lubrication.

   3. Custom tuning potential – valving matched to rider weight/style, compression & rebound fully tunable; tool‑free LSC.

   4. Durability under real‑world conditions – hard‑chromed stanchions, premium seals, billet double‑bolt clamps, stout axles.

   5. Long‑term value – with Fitment Kit, cross‑compatibility with many bikes, plus replaceable adapters, parts, etc.

How the CMX F43 Fork Differs from the F43 Ultra Bee Fork

Sirris has engineered a range of forks designed to match the needs of today’s leading compact electric motos. While all Sirris forks share elite materials and construction, the CMX F43 stands out for its broader bike compatibility for these compact e-motos.

Here’s how it compares to the dedicated Ultra Bee fork:

“Too Big for a Little Bike?”
Think again.

We get it. Some riders see the CMX F43 fork and think:
“Isn’t that a little too serious for a compact bike?”

But here's the truth: you need to ride it to believe it.

The CMX F43 isn’t overkill—it’s the exact kill your bike’s been missing. Built with real suspension tech from full-size motocross, this fork completely transforms how compact e-motos ride. The extra stiffness doesn’t weigh you down—it gives you razor-sharp steering. The 220 mm of travel isn’t bulk—it’s confidence, letting you float through whoops, drop into techy trails, and hit landings without blowing through your stroke. And that “price tag”? You’re not just buying a fork—you’re buying control.

You don’t realize how much your stock suspension is holding you back…
until you put real suspension underneath you.

Try it. Feel it. Send it. And good luck ever going back.

Final Thoughts

The CMX F43 is the one fork to rule all your compact electric motos. Whether you’re upgrading from stock forks on your Talaria, Surron LBX, E‑Ride Pro, or looking for long-term value and future compatibility — this fork has you covered.

And with Sirris's Fitment Kit, you can quickly switch the fork between platforms without tools, fabrication, or buying new hardware.

👉 Explore the CMX F43 Fork Collection