Trek Charter+ 4S Lowstep

Charter+ 4S Lowstep is a fast, luxury city e-bike built for comfort, ease, and style. The lowstep frame makes it easy to hop on and off, while front suspension and an adjustable stem keep your ride smooth and comfortable. A 28mph top speed and up to 45-mile range make quick work of commutes, and the top-eject battery makes charging simple. With bright lights, a high beam, and Bosch eBike Flow app security, every ride feels first class.

Stay connected with Bosch

The Bosch eBike Flow app gives you more control with digital locking, theft alerts, customizable ride modes, and navigation — all from your phone. 

Make it your own

Customize your bike with bags, baskets, bottle cages, and more to make it your own. 

Find your perfect fit 

A fully adjustable stem lets you fine-tune your position every ride, from a more relaxed fit to a more active riding position. 

A better battery experience 

Charter+ comes with a high-capacity, top-eject Bosch battery for long rides and easy charging. The color-matched, lockable magnetic cover makes it secure, sleek, and simple to use.

MIK HD Rear Rack 

This MIK HD rear rack supports weight up to 60lbs making it compatible for pretty much everything from child seats, side panniers, baskets and pet carriers. 

Versatile visibility 

Stay seen with daytime running lights powered by the main battery. The front light turns with your steering, and high beam brightens the road after dark. 

Frame	Premium Alpha Platinum Aluminum frame, top-load Bosch CompactTube battery, integrated cockpit routing, integrated rack and fenders, adjustable bolt on dropout
Fork	SR Suntour SF25-NVX32, coil spring, preload adjuster, 5mm ThruSkew, 63mm travel
Tire	Bontrager E6 Hard-Case Lite, reflective, wire bead, 60tpi, 27.5x2.4''
Hub Front	Formula CL-25, alloy, centerlock, 5x100mm
Hub Rear	Formula FCL-542S, alloy, centerlock, 11 speed freehub, 142x12mm thru axle
Rim	Alloy double wall, 32H
Spokes	14g stainless steel, black
Skewer Front	Trek Thru-Skew
Skewer Rear	Bontrager Switch thru axle, removable lever
Shifter	Shimano U4000, 9 speed
Rear Derailleur	Shimano CUES U4000
Crank	ProWheel alloy, 170mm length
Cassette	Shimano LINKGLIDE LG300, 11-46, 9 speed
Chain	Shimano LG500, 9/10/11 speed
Brake	Shimano MT200 hydraulic disc
Brake Rotor	Shimano RT30, centerlock, 180mm
Pedal	Bontrager City pedals
Saddle	Bontrager Boulevard
Seatpost	Alloy, suspension, 31.6mm, 300mm length
Seat Collar	Bolt-on, 36.4mm
Handlebar	Bontrager alloy, 31.8, comfort sweep, 660mm
Stem	Bontrager alloy, 31.8mm clamp, adjustable rise, Blendr compatible, 80mm length
Grips	Trek ergonomic PRO, lock-on
Light	Trek LED, taillight // Trek LED, 400 lumen low/800 lumen high, headlight
Kickstand	Adjustable length rear mount alloy kickstand
Battery	Bosch PowerTube 540Wh
Motor	Bosch Performance Line Sport, Smart System, 85Nm, 750W, 28 mph
Charger	Bosch standard 2A, 110V, smart system

Geometry Chart

B B Drop	6
B B Height	29.9
Chainstay Length	48.5
Eff Top Tube	59.9
Frame Reach	40
Frame Size Letter	S
Frame Size Number	42cm
Frame Stack	60.4
Head Angle	68.5°
Head Tube Length	14.3
Offset	4.4
Seat Tube	42
Seat Tube Angle	72.0°
Standover	44
Trail	9.4
Wheelbase	114.5
Wheel Size	27.5"