HJM Bike Rambler Folding Fat Tire Electric Bike

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500W Bafang Brushless Rear Hub Motor

48V/14Ah Samsung 35E Integrated Removable Battery

20 "x 4.0" Anti-Barbed Fat Tires w/ Reflective Strip


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HJM Bike Rambler Description

HJM Bike's Usmart Rambler foldable electric bike is designed to fold into a compact form, facilitating transport and storage. The folding mechanism makes it more easily carried into buildings, on public transportation and more easily stored in compact living quarters or aboard a car, boat, or plane.

Motor & Battery

The Rambler is outfitted with a Bafang 500W (nominal output) motor, which provides confident hill-climbing ability, load-hauling capability, and very good acceleration and torque. 

The geared, rear hub motor is paired with an aerodynamic 48V/14Ah battery pack with Samsung cells. The sophisticated battery management system (BMS) provides for smooth and fast charging with the 2amp charger provided. The battery is also removable for remote charging. 

7-Speed Gear Shift System

The HJM Rambler is equipped with a Shimano 7-speed Shimano drivetrain (thumb shift system), allowing you to ride them like a conventional bike with the electronics turned off. There is no drag from the motor when it is not in use.

You can shift smoothly through the gears depending on the terrain, maintaining a comfortable pressure while pedaling the bike. This is a great way to get some exercise while riding your ebike.

Twist Throttle

Simply give the right-side half-twist throttle a twist at any time, and the motor will kick in, no pedaling required.

LCD Electric Display

This Cordis KD21C LCD Electric Display has an undervoltage display value of 41.5 and was designed with a waterproof wiring harness. The factory default speed and mileage unit is mph.

HJM Bike Rambler Specifications

  • Motor: 500W Bafang RMG060.D Snowmobile Brushless Rear Hub Motor
  • Battery: 48V/14Ah Samsung 35E Integrated Removable Battery
  • Battery weight: 7.2 Lbs
  • Charger: 48V 2A Operates During 110V - 240V AC Power Outlets
  • Controller: 48V Brushless Controller
  • Charge Time: 6-7 Hours
  • Display: Cordis KD21C LCD Electric Display, (undervoltage display value of 41.5, waterproof wiring harness, no real-time power display, long press on/off key and "-" key for 10 seconds to restore power interface, factory default speed and mileage unit is mph), Display Manual
  • Drive Modes: 7-Speed Shimano Derailleur w/ 5-Level Pedal Assist System (PAS) & Half Twist Throttle
  • Frame: 6061 Aluminum Alloy Folding Frame
  • Suspension: RST Hydraulic Shock Front Fork
  • Brakes: Tektro Aries Mechanical Disc Brakes w/ 160mm Rotors & Tektro Aluminum Alloy Grips
  • Tire: Jianda 20 "x 4.0" Anti-Barbed Fat Tires w/ Reflective Strip
  • Rims: Double Star JP73A 20 x 12G x 36H Matte Black Single Layer Aluminum Rims 
  • Spokes: 12-Gauge Stainless Steel Thick Spokes
  • Lights: Five Star QD252 Integrated Headlight, Five Star WD220-2 Integrated Tail Light w/ Brake Light
  • Handlebar: Aluminum 31.3mm 
  • Handlebar Height: 5.15" - 5.59"
  • Handlebar Reach: 26.77"
  • Handlebar Width: 1.12"
  • Chain: KMC Chain
  • Crank Set: 48T Forged Alloy (67"/170mm)
  • Seat Post: Forged Alloy, Diameter 1.25"/31.8mm Length 13.8"/350mm
  • Stem: Zhihangda ZHD-V06/S01: Right Fold Sand Black Aluminum Alloy (handle 31.8 double screw locking, plus positioning telescopic tube 270mm)
  • Grips: Ergonomic Comfort Grips
  • Saddle: SR-A020D Saddle
  • Fenders: Fangda Black Long Mudflaps
  • Kickstand: Single-Leg Aluminum Alloy
  • Pedals: Vigor F178 Folding Pedals
  • Accessories: Lights, Bell, Fenders, Kickstand, Chainguard
  • Recommended Rider Height: 4'-11"+
  • Seat Height: 34.64" - 40.55"
  • Stand Over Height: 27.95"
  • Bike Lenght: 72.44"
  • Wheel Base: 47.24"
  • Dropout Width: 6.88"
  • Bottom Bracket Shell Width: 3.93"
  • Seat Tube Length: 14.17"
  • Top Tube Length (effective): 24"
  • Head Tube: 6.49"
  • Chain Stay: 26.77"
  • Crank Length: 6.69"
  • Seat Post Diameter: 1.25"
  • Max Tire Width: 4.0"
  • Weight: 70.5 Lbs 
  • Max Load Capacity: 308.6 Lbs
  • Box Dimensions & Weight: 61" x 12.59" x 33.46" (83.8 Lbs)
  • Rear Rack Capacity: 55.1 Lbs
  • Tools Required: Included
  • Warranty2 years
  • Shipping: Free shipping to the lower 48. We are unable to ship this brand to Alaska, Hawaii or Canada at this time.

Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.

All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.

If your package appears damaged from shipping, please do not accept it. Tell the driver to keep the package and contact us immediately at 888-883-3350. We offerGuide Package Protectionto ensure against lost, stolen or damaged goods. Click here to learn more about Guide.

Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.

Please click here to read our entire Shipping & Returns Policy.


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