Sirris R46 LSC Shock Absorber – The High-End Upgrade for Your SURRON Ultra Bee

The Sirris R46 is currently the most powerful and highest quality shock absorber available for the SURRON Ultra Bee (L1e & L3e). With a massive 46 mm high-flow piston, external reservoir, and fully adjustable LSC damping (low-speed compression and rebound), it sets new standards in performance, durability, and riding experience, whether on demanding trails or tough MX tracks.

Highest precision

The R46 is made from the finest materials: the shock body and spring mount are made from seamless 6061 aluminum with a hard-anodized Type 3 coating, while the 16 mm hollow piston is made from induction-hardened, chrome-plated steel. Each component is CNC-milled and subject to the most stringent quality controls, resulting in a shock absorber that performs reliably even under extreme conditions.

High-flow technology for maximum control

The huge 46 mm piston and external reservoir with floating piston ensure extremely stable damping behavior, even on long descents or high jumps. No fading, no overheating—the R46 stays cool and consistent in performance even after 30 minutes at full throttle.

Fully adjustable – perfectly tailored to you

With the external adjustment screws for compression and rebound, you can adjust the suspension to your weight, riding style, and terrain in seconds. Whether you want a smooth ride for flowing trails or a firm ride for aggressive MX lines, the R46 can handle it all.

85 mm suspension travel and intelligent safety features

Thanks to 85 mm of travel and a 320 mm installation length, the geometry of your Ultra Bee remains unchanged, but you gain noticeably more rear wheel traction and reserves. MCU bottom-out and rubber top-out buffers protect the frame and shock absorber even during hard landings.

Lightweight, robust, and ready for immediate use

Weighing just 1.76 kg (without spring) or 2.6 kg (with spring), the R46 is hardly any heavier than the original, but delivers vastly superior performance. It is delivered fully filled and vented – just unpack, assemble, and drive off.

Your advantages at a glance:

• Solid Ø46 mm high-flow piston for fade-free performance
• Fully adjustable low-speed compression and rebound via external control
• External reservoir with floating piston – no overheating
• 85 mm suspension travel with original installation length (320 mm)
• Available in 10 spring tunes from Trail-LIGHT to MX-XX HEAVY – perfect for riders weighing 60–120 kg

The Sirris R46 isn’t just a shock absorber—it’s the upgrade that finally brings your SURRON Ultra Bee to the level it deserves.