SURRON PART Sirris F43 MX Tune Ultra Bee Fork
Description
MX Tune is a motocross specific tune with balance, control, and bottoming resistance for the fastest speeds. It’s firm suspension for maximum control and support for huge jumps, whoops and fast cornering. If you select the EBMX or MX spec, you’ll compromise a bit of trail plushness for improved bottoming resistance.
The SURRON PART Sirris F43 MX Tune Ultra Bee Fork is designed for performance and durability, making it a top choice for serious motocross enthusiasts.
Sirris F43 MX Tune Ultra Bee Fork
RIDER WEIGHT SPECS:
Sirris offers five weight ranges to choose from when selecting your MX Tune F43 fork. (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges)
LIGHT 54 – 73kg / 120 lbs – 160 lbs (Light = 4.4/4.4 springs)
MEDIUM 73 – 91kg / 160 lbs – 200 lbs (Medium = 5.0/4.8 springs)
HEAVY 91kg – 109kg / 200 lbs – 240 lbs (Heavy = 5.4/5.0 springs)
X HEAVY 109 – 127kg / 240 lbs – 280 lbs (X Heavy = 5.4/5.4 springs)
XX HEAVY 127 – 145kg / 280 lbs – 320 lbs (XX Heavy = 5.4/5.4 springs)
Fork spring rates listed above are left side/right side.
With the SURRON PART Sirris F43 MX Tune Ultra Bee Fork, riders can expect enhanced stability and control during extreme maneuvers.
FORK SPECS:
Architecture
Upside down fork
Utilizing the latest technology, the SURRON PART Sirris F43 MX Tune Ultra Bee Fork offers superior response and comfort on tough terrains.
Travel
246 mm
Free length
856 mm
Fork weight, includes clamps and steerer
22 lbs / 10kg
Stanchions
Ø43, high tensile steel with hard chrome
Many riders have praised the SURRON PART Sirris F43 MX Tune Ultra Bee Fork for its reliability and consistent performance in varied conditions.
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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