55 Pounds of Pure Urban Agility. 52-Volt Relentless Muscle. The 28 MPH Daily Commuter That Leaves Heavy Bikes Behind.
Most commuter e-bikes force a frustrating compromise: they either weigh 75 pounds and feel like maneuvering an anchor up apartment stairwells, or they cut weight by giving you an underpowered 36V or 48V motor that stalls on the first bridge climb. The Otis shatters that compromise completely. Tipping the scales at a featherweight 55 pounds—the lightest performance machine in the entire Murf stable—it pairs an ultra-responsive diamond step-over aluminum chassis with an industrial-grade 52V 15Ah (780Wh) Samsung lithium battery pack feeding a 750W rear hub motor. Tap into Class 3 pedal assist to cruise effortlessly at 28 MPH down arterial bike boulevards, or twist the thumb throttle in Class 2 mode for a sweat-free 20 MPH cross-town sprint. Fitted with fast-rolling 26" × 2.125" slick city tires, all-weather Tektro hydraulic disc brakes, an integrated 550-lumen LED headlight, and a bulletproof single-speed drivetrain that eliminates dropped chains forever, The Otis turns daily urban transit into pure, unobstructed flow.
Statutory Class 3 & Class 2 Dual-Mode Compliance Notice: The Otis features user-selectable speed firmware allowing seamless operation as a Class 2 electric bicycle (20 MPH throttle/assist) or full-speed Class 3 electric bicycle (28 MPH pedal assist). In strict adherence to 15 U.S.C. § 2085, 16 CFR Part 1512, and Texas Transp. Code § 551.102, this vehicle is fully recognized as an electric bicycle. It requires no driver's license, vehicle registration, license plate, or state vehicle inspection for operation on public roadways and municipal bike networks.
Who's This For
Tired of wrestling 80-pound fat tire bikes into tight elevators, navigating twitchy narrow-tire road bikes over cracked city pavement, or waiting on delayed subway lines? Want an agile, 55-pound daily driver that hits 28 MPH, climbs hills without breaking a sweat, and carries upstairs with one hand?
What you can do:
- Sprint at 28 MPH in Class 3 pedal-assist mode to pace downtown traffic and slash your morning commute time in half
- Cruise up to 20 MPH on pure thumb throttle when riding in work attire to arrive completely sweat-free
- Carry the bike up apartment stairs or onto commuter trains with ease thanks to a lean 55-pound total chassis weight
- Carve through tight city corners and asphalt seams on nimble, fast-rolling 26" × 2.125" urban street tires
- Conquer stubborn highway overpasses and rolling hills with high-voltage 52V hill-climbing torque (85Nm)
- Ride 30 to 60 miles per charge with an integrated Samsung cell battery engineered for daily high-efficiency transit
- Stop instantly and smoothly in wet or dry conditions with dual Tektro hydraulic disc brakes and 180mm stainless rotors
- Eliminate drivetrain maintenance, greasy derailleur adjustments, and dropped chains with a clean single-speed chain line
- Commute safely before dawn and after dusk with an integrated frame-powered 550-lumen 3-LED headlight and active tail light
- Comfortably fit adult riders from 5'5" to 6'4" with a classic 28" step-over frame geometry and adjustable cockpit
What This Bike Actually Solves
The "Heavy Commuter Elevator Struggle" Problem
The Problem: Standard e-bikes weigh between 70 and 85 pounds. Carrying them up a flight of stairs, loading them onto a bus rack, or guiding them into a cramped apartment elevator is an exhausting daily workout.
The Solution: The Otis trims curb weight down to just 55 pounds. With balanced center-of-gravity distribution and streamlined frame geometry, you lift and transport it with confidence and zero back strain.
The 48V Voltage Drop & Hill Drag
The Problem: Typical 48V commuter bikes experience significant voltage drop as the battery discharges, leaving riders crawling at 12 MPH on hills during the ride home from work.
The Solution: The 52V system operates at a higher baseline electrical pressure, delivering snappy throttle response and sustained climbing power even when the battery gauge drops below 30%.
Complex Derailleurs & Commuter Maintenance Headaches
The Problem: Multi-gear derailleurs get bent in bike racks, collect street grime, skip under motor torque, and require frequent cable tension adjustments.
The Solution: The Otis utilizes a direct single-speed drivetrain. The 750W motor acts as your electronic gearbox, giving you immediate propulsion from a dead stop without mechanical friction or dropped chains.
Real-World Commuting Scenarios
The 7-Mile Cross-Town Rush Hour Commute (8:00 AM)
8:00 AM. Traffic on the main thoroughfare is backed up for two miles. You unlock The Otis, engage Class 3 assist, and cruise down the protected bike boulevard at 26–28 MPH. You arrive at your downtown office in 17 minutes flat—beating your driving time by 15 minutes, avoiding 20 USD parking garage fees, and stepping into the office energized and ready.
The Win: Faster than rush-hour driving, zero fuel costs, and predictable arrival times down to the minute.
The Mixed Transit & Walk-Up Apartment Transition (Daily 5:30 PM)
5:30 PM. Returning home, you lift the 55-pound Otis up the three steps to the light rail platform, roll it into the train car without obstructing passengers, and exit smoothly at your neighborhood stop. At home, you carry it up your second-floor walk-up staircase with one hand on the top tube and plug in the 52V charger in your hallway.
The Win: Complete transit flexibility and apartment compatibility with zero storage compromises.
The Relaxed Weekend Coffee & Greenway Ride (Saturday 10:00 AM)
Saturday morning. You switch the controller to Class 2 mode, throttle casually at 15–18 MPH down to your local roaster, grab an iced coffee, and take a detour along the paved river trail. The 26" × 2.125" slick tires roll silently over asphalt and boardwalks while Tektro hydraulics keep you in absolute control.
The Win: From high-speed weekday commuter to chilled weekend cruiser at the push of a button.
The Otis vs. Typical 48V City Commuters: What the Premium Delivers
| Component / Capability |
Murf The Otis (1,100 USD — This Model) |
Generic 48V Commuters (1,299–1,599 USD) |
| Chassis Curb Weight |
55 lbs (Lightest Murf in Lineup) |
68–78 lbs (Heavy & Cumbersome) |
| Electrical System Voltage |
52V 15Ah (780Wh Samsung Lithium Cells) |
48V 10Ah–13Ah (480–624Wh Generic Cells) |
| Top Speed Capability |
28 MPH Class 3 / 20 MPH Class 2 Selectable |
20 MPH Class 2 Only (Speed-Capped) |
| Braking Architecture |
Tektro Hydraulic Disc Brakes (180mm Rotors) |
Mechanical Cable Brakes (Prone to Cable Stretch) |
| Drivetrain Maintenance |
Heavy-Duty Single Speed (Zero Tuning / No Dropped Chains) |
Budget 7-Speed (Frequent Derailleur Hanger Bends) |
| Electrical Safety Standards |
ANSI/CAN/UL 2849 & UL 2271 Certified |
Non-Certified or Unverified Imports |
Looking for complete engineering measurements, detailed component specs, unboxing contents, or statutory CPSC/UL compliance records? See the collapsible rows below.