Description
Sirris offers two weight ranges when selecting your CMX Tune F43 fork for Arctic Leopard XE Pro R. (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges)
140 lbs - 180 lbs (Medium = 4.0/3.6 springs)
180 lbs - 220 lbs (Heavy = 4.0/4.0 springs)
Fork spring rates listed above are left side/right side.
FORK SPECS:
Architecture
Upside down fork
Travel
220 mm
Free length
775 mm (total length is 800 with drop clamp)
Fork Spacing
178 mm - allows for unlimited tire choice (dirt or street)
Fork weight
4 kg per leg (driven by sturdy construction required for the forces and speeds encountered when pushing these bikes to their limits without compromising performance)
Stanchions
Ø43, high tensile steel with hard chrome
Outer tubes
Seamless 7050 aluminum, type 3 hard anodized coating
Drop outs
6061 aluminum, type 2 anodized coating
Replaceable caliper mount brackets allow for caliper and wheel upgrades
Brake mounting
• Sized for 240mm rotors, replaceable caliper mount brackets allow for caliper and wheel upgrades
• 240mm rotor brake bracket is included
Axle
• Custom ultra stiff, race-grade ultra-high tensile hard chromed axle increases steering precision and confidence
• Arctic Leopard XE Pro R wheel spacers included
Triple clamps
Drop clamp, billet 6061 aluminum, type 2 anodized coating, black
Steer tube
Seamless 7050 aluminum, type 2 anodized coating
Stem mount
4-bolt direct mount stem only
Top cap system
Motorcycle-style top cap allows for more consistent control over steering bearing tension
Damping
• CMX tune (Compact Motocross Tune)
• Symmetrical and adjustable closed cartridge with spring backed modified IFP
• High-flow pistons + fully tunable compression and rebound valving
• Dual oil circuits for optimum performance. Separating lubrication and damping oils allows us to further optimize high and low speed damping performance.
• Balanced load, race-ready, high performance. No matter how hard you ride or how many laps you take, our closed cartridge forks will never fade and will always feel predictable.
• Hydraulic bump stop is a hydraulic bottom out control system that gives you soft landings and max stroke even on the most aggressive impacts.
Damper bodies
Seamless 7050 aluminum, type 3 hard anodized coating providing high durability and scratch resistance to keep your ride in top condition.
Rebound
Dual side high tensile steel spring, adjustable
Adjusters
External tool-free compression, rebound adjustment
(rebound adjusted using tool)
Seals
NOK MX seals
Bushings
Daido MX bushings
Guards
High impact PP, 210-degree wraparound