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Size 42cm
Material Steel, TIG welded
Dropouts 2x rear dropout eyelets
Fork Steel, 1 1/8" (28.6mm) Threaded for Quill, TIG welded, 2x eyelets: 1/dropout + 1/mid-blade
Rims Alloy double-wall, 700C x 36H x 13G
Hubs F: Alloy bolt-on, R: Hub motor bolt-on, 36H x 13G
Spokes 13G UCP w/brass nipples, Black
Tires 700 x 45C, S/V
36V/350W Motor Brushless rear hub motor, 9-pin connector. MXUS
36V/350W Battery Li-ion + Charger w/US plug, w/power level display. Tianjin Xianzhong New Energy Technology Co., Ltd
48V/500W Motor Brushless rear hub motor, 9-pin connector, MXUS
48V/500W Battery Li-ion + Charger w/US plug, w/power level display. Tianjin Xianzhong New Energy Technology Co., Ltd
Drive Mode Display PAS/throttle, speed sensor, LED handlebar-mount display panel w/6 assistance levels, w/Start-Aid 6kph (~4mph)
Controller Yelchm Technology
Charge Time (empty to full) 10.4Ah battery (350 & 500W): 5-6 hours
36V/350W range up to 28 miles
48V/500W range up to 37 miles
Derailleur Shimano Tourney 7S, RD-TX35-SGS
Shifter Shimano Tourney Thumb Shifter (push/pull) 7S, SL-TX50-7R
Crankset Alloy 3-piece 170mm x 42T, alum arms, steel chainring
Chain KMC Z-series 1/2 x 3/32"
BB Steel sealed cartridge, 68 x 124.5mm
Freewheel/Cog Shimano 7-speed 14-28
Headset Threaded, steel, 1 1/8" (28.6mm)
Brakes JAX Mechanical disc Front & Rear, 160mm
Handlebars Alloy low-rise, 610mmW x 40mm rise
Grips Comfort
Stem Alloy quill, single-bolt clamp
Saddle Comfort w/springs
Seatpost Alloy w/integrated micro-adjust clamp, 28.6 x 300mm
Seatpost Clamp Alloy QR
Pedals High Impact, Reinforced Nylon Resin Platform, 9/16"
Kickstand Center mount, adjustable, steel
Rear Carrier Battery holder & carrier, steel
Bell Alloy
Lights Front (4x AAA) + Rear (2x AA), batteries included
Fenders Steel fenders w/alloy stays
Chaincover Full coverage/length, steel
Tools 4 pcs: 15mm open/box, 10mm open/box, 5/6mm hex key, cross (Phillips) screwdriver
Recommended Weight Limit 220lbs
Item Weight 58 lbs (battery included)

Part Numbers

Option MPN Store SKU
Egg Shell / 42 CM 4544 4544
Blue / 42 CM 4543 4543