DirtyBike
Sirris F43 Fork | Surron Ultra Bee
Sirris F43 Fork | Surron Ultra Bee
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A new era in E-Moto suspension performance 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.
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.
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.
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)
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.
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 |
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