EUNORAU E-BIKE US
E-FAT-STEP
E-FAT-STEP
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SKU: RESP20165OG2US
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- Price: $1,099.00
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PRODUCT DESCRIPTION
The Accessible Adventure. Fold It. Ride It. Love It.
This is the folding fat-tire bike with 813 five-star reviews. You get step-through accessibility, tool-free adjustable stem (0-135mm range), 20" x 4.0" fat tires that float over sand and snow, and the ability to fold it flat for RV storage or apartment living. Beach-proven. Senior-approved. $1,099.
2. KEY SPECS
| Icon | Specification |
|---|---|
| ⚡ | Class: 2 (Pedal Assist + Throttle) |
| 🔋 | Motor: 500W Rear Hub (80Nm Torque) |
| 🔌 | Battery: 48V 12.5Ah (Removable) |
| 💨 | Top Speed: 20 MPH |
| 🛣️ | Range: 40–50 Miles (Estimated) |
| 🛞 | Tires: 20" x 4.0" KENDA Fat Tires |
| 📦 | Payload: 330 lbs |
| ⚖️ | Weight: 63 lbs (Lightest Folder) |
| ✓ | Foldable + Step-Through + Hydraulic Brakes |
| ✓ | UL 2849 & 2271 Tested |
3. WHO'S THIS FOR
You need easy mounting (step-through). You want beach capability without a 90-pound anchor. You live in an apartment, RV, or condo with limited storage. You don't want to struggle with balance or flexibility gymnastics to ride a bike.
What you can do:
- Mount Easily: Step-through frame = no leg-over acrobatics
- Fold Fast: Main tube + stem fold in under 60 seconds for compact storage
- Ride Confidently: 20" fat tires = stable handling on sand, snow, gravel, pavement
- Customize Fit: Tool-free stem adjustment (0-135mm range) fits 5'1" to 6'1" riders
- Stop Safely: Hydraulic disc brakes (160mm) provide smooth, powerful modulation
- Go Light: 63 lbs = lightest folding fat-tire in the premium class
4. TECHNICAL SPECIFICATIONS THAT MATTER
| Specification | Detail | Why It Matters |
|---|---|---|
| Step-Through Frame | Aluminum Alloy Low Step-Through | No flexibility required—swing leg through at waist height instead of over saddle; critical for seniors, riders with limited mobility, or anyone carrying cargo; allows safe mounting/dismounting while loaded |
| Motor | 500W Rear Hub (80Nm Torque) | Reliable hub motor = low maintenance (no chain wear issues like mid-drives); 80Nm torque provides confident acceleration from stops; rear placement keeps front wheel light for easy steering |
| Battery | 48V 12.5Ah (Seat Tube Mounted) | Removable for convenient charging anywhere; low center-of-gravity placement (beneath saddle) improves stability; 600Wh total capacity handles 40-50 mile estimated range |
| Range | 40–50 Miles Estimated | Conservative real-world estimate; reviews confirm full-day beach rides on single charge; perfect for errands, recreation, or light commuting |
| Foldable Design | Main Tube + Telescoping Stem Fold | UNIQUE FEATURE: Fits in RV storage, apartment closet, car trunk; 170° stem fold reduces footprint dramatically; quick-release clamps = no tools required |
| Adjustable Stem | Tool-Free Height Adjustment (0-135mm range) | Customize fit in seconds without tools; 260mm base + 140mm extension accommodates wide rider height range (5'1" to 6'1"); eliminates need for multiple frame sizes |
| Tires | 20" x 4.0" KENDA/CHAOYANG Fat Tires | Maximum flotation on sand, snow, mud; 20" diameter lowers center of gravity for stable handling; 4.0" width cushions bumps without excessive drag; beach-proven by customer reviews |
| Brakes | Eunorau Hydraulic Disc (160mm) + Motor Cutoff | Hydraulic actuation = smooth, powerful stopping with minimal hand effort; motor cutoff sensor kills throttle instantly during braking; critical for safe control |
| Drivetrain | Shimano 7-Speed (Altus) | Reliable mid-grade components; wide-range cassette handles varied terrain; simple maintenance |
| Display | K-LCD5 Panel | Displays battery, speed, distance, pedal assist level, time; 5-level PAS control; backlit for night visibility |
| Lights | LED Front + Super Bright Taillight | Taillight visible 1500+ feet; controlled via display; integrated for always-ready visibility |
| Weight | 63 lbs / 28.5 kg | Lightest folding fat-tire in premium class; manageable for lifting into RV or trunk storage |
| Payload | 330 lbs | Handles rider + cargo, groceries, or beach gear with confidence |
| Pedals | Folding Nylon Pedals | Reduce width when folded for easier storage and transport |
| Controller | 48V 20A | Delivers smooth power delivery across all 5 pedal assist levels |
| Safety Testing | UL 2849 & 2271 Tested | Entire electrical system independently tested; battery meets fire safety standards for indoor charging |
| Charge Time | Est. 4–6 Hours (2A charger) | Overnight charge for next-day readiness |
| Warranty | 2-Year Electrical / 5-Year Frame | Coverage for motor, battery, controller, display, and aluminum frame |
5. FROM PROBLEM TO SOLUTION
The Mounting Problem
The Problem: Traditional bike frames require leg flexibility and balance. Seniors, riders with mobility issues, or anyone wearing work clothes struggles with high step-over frames.
The Solution:
✓ Step-through frame = swing leg through at waist height
✓ No balance required while mounting—feet stay planted
✓ Safe dismounting when loaded with cargo or groceries
✓ Tool-free stem adjustment customizes fit without buying multiple sizes
The Storage Crisis
The Problem: Full-size e-bikes don't fit in apartments, RVs, or small garages. Lack of storage = dealbreaker for many buyers.
The Solution:
✓ Foldable frame (main tube + stem) reduces footprint dramatically
✓ Fits RV rear storage, apartment closet, car trunk
✓ Folding pedals reduce width further
✓ Quick-release clamps = fold/unfold in under 60 seconds
✓ Customer-verified: "We need them to fold to fit on the back of our RV"
The Beach & Off-Road Challenge
The Problem: Standard e-bikes sink in sand, slip in snow, and feel unstable on loose terrain.
The Solution:
✓ 20" x 4.0" fat tires float over sand, snow, mud, gravel
✓ Low 20" wheel height = lower center of gravity = stable handling
✓ Customer-verified: "Super impressed how well the Eunorau performed on the beach" (Port Aransas, TX)
✓ Same tires handle pavement with responsive feel
6. REAL-WORLD SCENARIOS
The Beach Cruise (Port Aransas, TX)
Customer review: You ride your E-FAT-STEP onto the beach. The fat tires float over soft sand like magic. Tourists stop and ask about it. You cruise 7 miles down the shoreline, battery at 75%. You return with your gear dry, legs fresh, and a sunburn you earned. Total cost: $0 in parking fees.
The Win: Beach capability without 90-pound weight penalty—portability + performance for coastal riders.
The RV Lifestyle
Customer review: "We need them to fold to fit on the back of our RV. They ride well, very solid feel, smooth power." You unfold two bikes in 90 seconds, explore a new state park, fold them back when the sun sets. No trailer hitch bike rack needed. No storage stress.
The Win: RV-compatible portability without sacrificing ride quality—freedom for full-time travelers.
7. WHAT'S INCLUDED
Assembly State: 85% Pre-Assembled
Assembly Time: ~45 Minutes
Tools Required: Basic hex keys (included)
| Component | Status |
|---|---|
| Aluminum Alloy Folding Frame | ✓ Assembled |
| 48V 12.5Ah Battery | ✓ Installed & Charged |
| 500W Rear Hub Motor | ✓ Pre-installed in Rear Wheel |
| Smart Charger (2A) | ✓ Included |
| Shimano 7-Speed Drivetrain | ✓ Pre-installed |
| Eunorau Hydraulic Disc Brakes | ✓ Pre-installed & Bled |
| KENDA/CHAOYANG 20" x 4.0" Fat Tires | ✓ Mounted |
| Adjustable Folding Stem | ✓ Pre-installed (requires final adjustment) |
| K-LCD5 Display | ✓ Installed |
| LED Lights (Front + Rear) | ✓ Pre-wired |
| Folding Nylon Pedals | ✓ Included (requires installation) |
| Comfort Saddle | ✓ Pre-installed |
| Aluminum Bash Guard | ✓ Pre-installed |
| Tool Kit | ✓ Included |
| Owner's Manual | ✓ Printed + Digital PDF |
8. COMPATIBLE WITH
Assembly & Maintenance Resources
Assembly Guide: [Assembly video coming soon—pedal installation, stem adjustment, folding mechanism demo]
Approved Accessories
Range Extension:
- [Secondary Battery Kit (48V 12.5Ah/17.5Ah)] — Extended range for long beach rides or tours
Storage:
- [Front Basket] — Grocery capacity without compromising step-through access
- [Rear Rack] — Additional cargo mounting for panniers or top bags
Comfort:
- [Suspension Seatpost ($159)] — Additional cushioning for rough terrain
- [Premium Saddle with Backrest] — Enhanced lumbar support for long rides
- [Ergonomic Grips] — Reduce hand fatigue
Safety:
- [Genesis Adult Helmet ($39.99)] — Officially paired accessory
- Kryptonite Keeper Chain Lock — 47" hardened steel; $500 anti-theft protection offer
9. WARRANTY, RETURNS & SHIPPING
Warranty Coverage
2-Year Warranty on all electrical components (motor, battery, controller, display) against manufacturer defects.
5-Year Frame Warranty on aluminum folding frame.
For complete warranty details, exclusions, and claim procedures, review our Warranty & Purchase Agreement Policy.
Returns & Refunds
We want you to love your accessible adventure machine. If it's not the right fit, we've got you covered.
7-Day Money-Back Guarantee — No questions asked return policy.
For return windows, damage reporting procedures, and refund policies, see our full Return & Refund Policy.
Shipping & Delivery
Shipping Cost: Free Shipping (Continental US, orders $100+)
Processing Time: 1–3 Business Days
Delivery Method: FedEx/UPS Ground
Delivery Window: 5–7 Business Days
Assembly Required: ~45 Minutes (85% Pre-Assembled)
Important: This is a folding compact bike. Standard package dimensions allow easy handling.
For detailed shipping timelines, tracking, and international options, visit our Shipping & Delivery Policy.
Support
Questions about your order, warranty claim, or technical support?
Reach our team directly via our Contact Page.

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