RUJIXU 20 inch Fat Tire Forks BMX Air Suspension Fork 20x4.0 eBike Front Fork Mountain Bike Forks taper1-1/2 Straight 1-1/8" Disc Brake Travel 120mm with Damping Adjustment QR 135 * 9MM 5.8lb(Black)

• All-terrain fat bike fork: Designed for 20x4.0-inch fat bikes, it can easily cope with complex terrains such as cities, beaches, snow, and mountains.
• Professional-grade air shock front suspension: 1-1/8" steerer tube, 270mm length (1-1/2" tapered tube conversion seat included in the package), 140mm compressible stroke with damping adjustment system, impact absorption efficiency increased by 40%.
• Lightweight magnesium alloy BMX fork: Made of aviation-grade magnesium alloy, the weight of 5.8lb is 35% lighter than traditional steel forks.
• Quick maintenance design double-shoulder fork: 9mmx135mm quick-release axle can quickly install/remove wheels for easy maintenance or transportation.
• MTB downhill fork: This rujixu suspension fork is also equipped with a star nut, supports hydraulic disc brakes (A) column, oil-gas structure treatment, and adjusts the comfortable air pressure value according to the rider's weight and riding conditions to achieve a better experience.

[Technical Parameters] ▪ Applicable wheel diameter: 20 inches ▪ Maximum tire width: 4.0 inches ▪ Stroke length: 180mm (140mm compressible stroke) ▪ Material process: magnesium alloy casting ▪ Braking system: disc brake only (not compatible with V brakes) ▪ Steering tube specification: 1-1/8" straight tube (with 1-1/2" tapered tube conversion seat) ▪ Axle specification: 9mmx135mm quick release ▪ Adjustment function: air pressure, damping adjustment ▪ Net weight: 5.8lb ▪ Surface treatment: anodized anti-scratch coating [Application scenarios] ✦ Winter ice and snow road riding ✦ Beach/mud adventure activities ✦ Urban folding car modification and upgrade ✦ Forest road off-road obstacle crossing ✦ Cargo bike load buffer Four-level buffer system: Preload spring + air pressure + magnesium alloy rigid support + hydraulic damping rebound speed adjustment 22 levels of rebound speed adjustment can be performed through the top damping knob Safety enhanced design: 3D forged fork crown enhances lateral rigidity 110kg dynamic load Disc brake seat CNC precise positioning Intelligent compatible solution: Support 20×4.0" fat tire Reserved fender mounting holes This RUJIXU fat tire front suspension fork is suitable for most 20-inch x4.0 fat tire bicycles, such as snowmobiles/ATVs/electric bicycles/mtb/bmx children's bicycles/motorcycles/electric motorcycles/folding bicycles/XC/DH, etc. But the premise is that you need to check your model and parameters carefully before placing an order Upgrade your riding equipment now! This professional-grade fat tire front fork will completely change your riding experience on complex terrains - whether it is soft sand or heavy snow, it can provide a stable and smooth handling experience. Click "Add to Cart" to start your all-terrain adventure!