This is FastAce's newest offering for Surron Light Bee, Talaria Sting MX3/MX4/XXX, E Ride Pro SS, and all other MTB fork based eMoto bikes. Often called the "3.0", it's bigger and beefier than its predecessor, includes black lower/stanchion tubes, and now has 18 clicks of both high and low-speed compression damping adjustment. It features HD springs up to 60lb and updated dampening valving which provides a huge upgrade over previous generations and the OEM forks. Spring Rate Recommendation FEATURES: Legs Material: 2000 Series Aluminium Leg Diameter: 37mm Axle: 20*10*M14*P1.5*170L Steerer: 1-1/8" Straight Spring: coil spring Adjustments: Rebound, HS and LS Compression 18 steps High Speed and 18 steps Low Speed Compression Damping 18 steps Rebound Damping Crown: Forged Brake Post Mount: 203mm (compatible with up to 223mm rotors) Max Tire Width: 67mm Ride Height: 22.9in Travel: 200mm For heavier riders and big air dirt jumpers Bike Fitment: Talaria MX3 / MX4 / XXX / XXX Pro SurRon LBX, LBS, L1E Segway X-260 / X-160 E-Ride Pro S / SS 1.0/2.0 Rawrr Mantis X 79 Bike Falcon M / Pro / GT Ventus One / One + RFN Apollo Rerode R1 / R1 +