Sirris F43 Fork for Surron Ultra Bee

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

PRECISION PARTS
DURABLE AF
RACE READY

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

Sirris F43 Fork for Surron Ultra Bee

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.

TRUE SYMMETRICAL CLOSED CARTRIDGE F43 Fork

Balanced Performance
Balanced load, race-ready, high performance. No matter how hard you ride or how
many laps you take, closed cartridge will never fade and will always feel predictable.

Sirris F43 Fork for Surron Ultra Bee

Hydraulic Bump Stop
Gives rider a soft landing at max stroke even on the most aggressive impacts.

NO COMPROMISES

Dual Oil Circuits for Optimum Performance

Completely separate lubrication and damping oils allows us to optimize damping performance without compromise.

High Quality Materials + Surface Treatments

All cartridge bodies and outer tubes are 7000 series aluminum for maximum strength, finished in type 3 hard anodized for scratch resistance and durability. Hard chrome stanchions and wrap around guards keep it performing like new for longer.

Sirris F43 Fork for Surron Ultra Bee

EVERY RIDER EVERY RIDING STYLE

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.

Plug-and-play
Direct swap, no other modifications or additional parts needed to upgrade a stock Ultra
Bee. Comes with dust seal and headset bearing installed on steerer tube for quick
install. Triple clamps and guards fit directly with Ultra Bee fairing and cable routing.

Sirris F43 Fork for Surron Ultra Bee

Compression, rebound, and preload adjust
Custom spring rates for all riding styles and rider sizes.

High tensile lightweight springs
Weighs only 8.8 lbs (4 kg) per leg (standard configuration spring)

Sirris F43 Fork for Surron Ultra Bee

F43 FORK

43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON ULTRA BEE SPEC

Architecture	Upside down fork
Travel	246 mm
Free length	856 mm
Fork weight, incl clamps and steerer	22 lbs / 10kg
Stanchions	Ø43, chrome-plated steel
Outer tubes	Seamless 7050 aluminum, type 3 hard anodized coating
Drop outs	Forged 6061 aluminum, type 3 hard anodized coating
Triple clamps	Forged 6061 aluminum, type 3 hard anodized coating
Steer tube	Seamless 7050 aluminum, type 2 anodized coating
Damping	Symmetrical, adjustable closed cartridge with spring backed IFP
Damper bodies	Seamless 7050 aluminum, type 3 hard anodized coating
Rebound	Dual side high tensile steel spring, adjustable
Adjusters	External compression and rebound adjustment
Seals	NBR
Guards	High impact PP, 210-degree wraparound

 

Weight Chart and Riding Style for ordering:

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.