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Murf Electric Bikes

The Fat PAX Step-Thru E-Bike | Class 3 Cruiser

The Fat PAX Step-Thru E-Bike | Class 3 Cruiser

SKU: EB-FMST-OB-UL

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Price: $1,895.00
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List Price: $1,895.00
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Price: $1,895.00
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THE FAT PAX STEP-THRU

The Heritage Cruiser | Pathfinder Pedal


THE ORIGINAL ALL-TERRAIN CRUISER

The Fat PAX Step-Thru didn't just follow trends—it created them. This is the platform that defined the category: a high-voltage electric cruiser that prioritizes "float" and style over pure utility. We paired a robust 52-volt power plant with a timeless 19-inch step-thru silhouette, making it accessible to anyone who wants to ride. The 4-inch fat tires provide pneumatic suspension, smoothing out everything from boardwalk planks to gravel trails. It proves that capability and comfort can look good.

What You're Getting:

  • Timeless Silhouette: Classic beach cruiser curves with a 19" accessible step-over
  • Pneumatic Suspension: 4-inch fat tires act as natural shock absorbers for a "floating" ride feel
  • 52V Torque: Stronger acceleration and hill climbing than standard 48V cruiser systems
  • Class 2 or 3 Flexibility: Cruise at 20 MPH (Throttle) or unlock 25 MPH (Pedal Assist)
  • The "Pax" Feel: Upright, relaxed positioning that puts you in command without aggression

KEY SPECS

Icon Spec Detail
Class Class 2 or 3 (User Selectable)
🔋 Motor 750W Rear Hub
🔌 Battery 52V, 780Wh
💨 Speed 25 MPH (Class 3 Mode)
🛣️ Range 30–60 miles
⚖️ Weight ~75 pounds
Safety UL 2849 & 2271 Certified

WHO'S THIS FOR

Best Fit: All-terrain riders seeking accessibility, cruiser enthusiasts wanting fat tire capability, and anyone who values "ride feel" and comfort above industrial utility.

What You Can Do:

  • Hit 25 MPH in Class 3 mode for thrilling open-road riding
  • Cruise at 20 MPH on throttle only for effortless sightseeing
  • Handle sand, gravel, and light trails confidently with fat tire grip
  • Mount and dismount with grace thanks to the 19" step-thru frame
  • Ride 30–60 miles per charge on long coastal or urban loops

TECHNICAL SPECIFICATIONS THAT MATTER
Specification Detail Why It Matters
Motor 750W Rear Hub Reliable power delivery; responsive acceleration for mixed terrain.
Battery 52V, 780Wh Strong range (30–60 miles); powerful system for all-terrain capability.
Top Speed 25 MPH (Class 3) Thrilling performance; faster than Class 2-only bikes when you want speed.
Classification Class 2 or 3 User Selectable. Flexibility to cruise at 20 MPH or unleash full 25 MPH.
Brakes Tektro Hydraulic Disc Smooth, powerful, reliable stopping power in all conditions.
Drivetrain 7-Speed Shimano Crisp shifting; flexibility for varied terrain and hills.
Tires 26" × 4" Fat Tires Exceptional comfort; pneumatic suspension effect; grip on sand/gravel.
Frame Geometry 19" Step-Thru Classic silhouette; low entry point accessible for most riders.
Weight ~75 pounds Substantial build for durability; stable at speed.
Headlight 550-Lumen 3-LED Bright visibility; integrated for simplicity.
Safety UL 2849 & 2271 Entire electrical system independently tested and verified.

FROM CONFIDENT FEATURES TO REAL-WORLD BENEFITS

Heritage & Design

The Original Platform

This is the trailblazer. The Fat PAX proves that an e-bike can be rugged without looking like a tank.

  • ✓ Timeless Design – Curves that evoke classic cruisers, not industrial machinery.
  • ✓ 19" Step-Over – A geometry that invites you in. Mount and dismount with confidence and grace.
  • ✓ Upright Positioning – High-rise handlebars put you in a relaxed, heads-up posture.

Handling & Comfort

All-Terrain Float

We don't use complex suspension forks—we use physics.

  • ✓ Pneumatic Suspension – The massive air volume of the 4-inch tires absorbs vibration and bumps naturally.
  • ✓ Mixed Terrain Grip – Pavement, gravel, sand, and light trails are all in play.
  • ✓ Stable Footprint – The wide contact patch provides confidence at low and high speeds.

Powertrain

52V High-Torque System

Cruisers shouldn't be slow. The 52V system ensures you have the torque to keep up with traffic and flatten hills.

  • ✓ 52V Advantage – Stronger acceleration and better climbing capabilities than 48V competitors.
  • ✓ 60-Mile Range – High capacity (780Wh) means you can explore without "range anxiety."
  • ✓ Class 3 Capability – Unlock 25 MPH speeds when you need to cover ground quickly.

Control

Hydraulic Precision

When you have a 52V motor, stopping power isn't optional.

  • ✓ Tektro Hydraulic Discs – Consistent, powerful braking in wet or dry conditions.
  • ✓ 7-Speed Drivetrain – Unlike single-speeds, you can downshift for hills or upshift for speed. You dance with the terrain, not fight it.

REAL-WORLD SCENARIOS

The Coastal Commute

Ride to coffee shop (3 miles, Class 3 pedal-assist for light exercise). Explore beach boardwalk (2 miles, throttle mode). Return home (3 miles, leisurely pace).

The Win: Relaxed, fun, accessible transportation.

The Weekend Adventure

Load light cargo and head out (5 miles, mixed terrain). Explore new trail system (6 miles, Class 2 throttle for safety on rough ground). Stop for lunch. Return home.

The Win: Capable range for a full day out.

The Active Family Outing

Pick up kids/friends. Cruise to park. Explore park trails. Ice cream run. The step-thru frame makes the "stop-and-go" of social riding effortless.

The Win: Social connection without the sweat.


WHAT'S INCLUDED

75% Pre-Assembled.

  • Fat PAX Step-Thru Frame & Fork
  • Motor (750W Rear Hub)
  • Battery (52V, 780Wh Integrated)
  • Handlebars & Stem (Cruiser Style)
  • Wheels (26" × 4" Fat Tires)
  • Brakes (Tektro Hydraulic Disc)
  • Drivetrain (7-Speed Shimano)
  • Display & Controls
  • Lights (Headlight + Tail)

ASSEMBLY & SETUP

The Fat PAX Assembly Video

30-minute walkthrough covering frame assembly, handlebar adjustment, wheel installation, and pre-ride safety checks.

Watch Assembly Video


APPROVED ACCESSORIES

The Fat PAX Step-Thru pairs seamlessly with premium accessories designed for style and functionality:

  • Kryptonite Keeper Chain Lock – UL-tested security chain. Lightweight, portable, urban-proof.
  • Big Dawg Rack Bag – Weatherproof top-loader for light cargo. Handles groceries, camera gear, weekend essentials.
  • Kroozie Deluxe Cup Holder – Handlebar-mounted cup/phone holder. Responsive to bumps, stays secure.
  • Front Basket – Lightweight steel mesh. Carries light cargo; complements the classic cruiser aesthetic.
  • Rear Basket – Quick-release rear basket. Compatible with the Fat PAX frame system.

SHIPPING & DELIVERY

Processing & Delivery Timeline

Your Fat PAX ships within 1–2 business days of order confirmation. Delivery typically occurs within 7–14 business days via standard freight carrier (signature required). Expedited shipping is available upon request.

What Arrives at Your Door

The Fat PAX arrives 75% assembled in a reinforced shipping box. You will need to install the front wheel, handlebar stem, pedals, headlight, and seat. The process takes about 30 minutes following our assembly video.


WARRANTY, RETURNS & CLAIMS

2-Year Coverage: We stand behind our build with a 2-year warranty on all electrical components (motor, battery, display, lights). All components covered under manufacturer defect protection. Proof of purchase required.

Policy & Returns: For complete details on return windows, damage reporting, and refunds, please review our full Return & Refund Policy.

Support: Need to file a claim or have questions? Reach our team directly via our Contact Page.