FRAMESET Sizes: 1 size Medium Material: Valen 6061 hydroformed aluminum with, external downtube battery and replacable derailleur hanger. Fork: Rigid Triple Clamp Steel fork. WHEELSET Rims: 20" single-wall aluminum 36H, for disck brake Hubs: F: Aluminum bolt-on with 17mm axle nuts. 36 hole Spokes: 13G w/brass nipples Tires: 20x4" Fat MTB with puncture protection and reflective sidewall E-POWER SYSTEM Motor: 750W rear hub Battery: 500Wh/48VLG 21700 cells; Charge on or off bike Display: Left mounted color LED Charger: 48V/2A 48V/750W range: Up to 49 miles Assist Levels: 1-5 PAS, Throttle and walk-mode DRIVETRAIN Crankset: 3-Piece aluminum w/steel 38T chainrings with double alloy chainguard Chain: KMC SIngle Speed BB: Sealed cartridge Freewheel/Cog: Single Speed 18T COMPONENTS Headset: 1-1/8” semi-integrated threadedless Brakes: Tektro mechanical with 180mm rotors and semi-metalic pads Handlebars: Steel BMX Grips: Lock-on comfort grips. Stem: BMX Die Cast Alloy 22.2mm clamp Saddle: Retrospec Custom Moto Pedals: PP plateform with non-slip tread EXTRAS Kickstand: Aluminum chainstay mounted, 40MM bolt pattern Accessories: tool kit Recommended Weight Limit: 350lbs Item Weight: 72 lbs (battery included)