EBMX Competition Tuned - Sirris Fork and Shock for Surron Ultra Bee
A new era in E- Moto Suspension coming to an EBMX Dealer near you. Transform your Ultra Bee for aggressive riding with our all exclusive 260mm travel fork and custom valve coding developed in France with our pro riders. Designed to handle the increased power delivery from your EBMX upgraded drive train.
Buy as a set or individually the EBMX Sirris Suspension range is in store in the US, UK and EU.
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.
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 ano for scratch resistance and durability. Hard chrome stanchions and wrap around guards keep it performing like new for longer.
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.
The Shock is pressure balanced and Optimized for EBMX Riders. Revolutionize your bike’s potential with harmonized suspension performance front and back. The ultimate suspension package is here.
DSC (Dual Speed Compression)
Allows a broad adjustment range that truly separates the high speed and low speed circuits for superior adjustment control.
Direct Swap
The shock has easy installation, 320 mm length (85 mm stroke) bolts directly onto a stock Ultra Bee.
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 like new, even after thousands of miles.
Extremely Easy to Rebuild
Fully serviceable design ensures easy rebuilds.
FORK SPECS
Architecture
Upside down fork
Travel
260 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
SHOCK SPECS
Architecture
Piggyback, steel spring
Stroke
85 mm
Length
320 mm
Weight
3.9 lbs / 1.76 kg without spring
Piston
High flow Ø46 mm, CNC 6061 billet aluminum, type 3 hard anodized coating
Piston band
Hard band
Shaft
Ø16 mm OD chrome-plated, induction hardened steel, hollow, Ø 5.5 mm ID
Shock body
Seamless 6061 aluminum, type 3 hard anodized coating, ACME thread
Spring retainer
Seamless 6061 aluminum, type 3 hard anodized coating, ACME thread, with locking feature, manual adjust
Bottom out
MCU bumper
Top out
Rubber bumper
Damping
Tunable compression and rebound
Reservoir
Pressurized with floating piston
Adjusters
External compression and rebound adjustment
Seals
NBR