SKU: 1260889036

HKM-665683 36V 13Ah Electric Bike with 350W Full Suspension, 7-Speed Gears, and 27.5-Inch Tires

Sale price$855.00 Regular price$950.00
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

HKM-665683 36V 13Ah Electric Bike with 350W Full Suspension, 7-Speed Gears, and 27.5-Inch TiresHKM 665683 36V 13Ah Electric Bike Precision engineered for urban explorers and trail enthusiasts. Where robust power meets refined suspension intelligence. Dynamic Rear Hub Drive 350W Nominal Power High torque rear hub motor delivers swift acceleration and sustained climbing capability. Peak output handles demanding inclines with composure. Top Speed 18. 6 31 mph 30 50 km h velocity range adapts to open roads and controlled bike lanes. Three ride

HKM-665683 36V 13Ah Electric Bike

Precision-engineered for urban explorers and trail enthusiasts. Where robust power meets refined suspension intelligence.

Dynamic Rear Hub Drive

350W Nominal Power

High-torque rear hub motor delivers swift acceleration and sustained climbing capability. Peak output handles demanding inclines with composure.

Top Speed 18.6 – 31 mph

30 – 50 km/h velocity range adapts to open roads and controlled bike lanes. Three ride modes let you balance range and thrill.

The motor’s 70–80 Nm (51.6 – 59 lb‑ft) torque output means confident hill starts and steady momentum on loose surfaces. Riders experience immediate response the moment they engage the throttle or pedal assist, blending human effort with electric precision seamlessly.

Lithium Core Energy System

36V 13Ah (468 Wh)

Integrated downtube battery with smart BMS guards against overcharge, over-discharge, and temperature extremes. Lockable, removable design.

Range 19 – 37 miles

31 – 60 km on a single charge, depending on assist level, terrain, and rider input. Ideal for daily commuting or extended weekend exploration.

Real‑world testing shows that in ECO mode on flat paved roads, range can exceed 37 miles. The battery recharges in approximately 5–6 hours with the included 2A smart charger, so you can top up overnight and be ready for the next ride.

Full Suspension, Engineered for Comfort

ZOOM Front Fork – 100 mm Travel

3.9 inches of responsive suspension absorbs potholes and roots. Preload adjustment tailors the ride to your weight and terrain preference.

KS-A5 Rear Shock – 165 mm Travel

6.5 inches of rear cushioning keeps the wheel planted. Progressive spring rate copes with big hits and small chatter alike.

The full suspension system isn't just about comfort—it maintains tire contact for safer braking and cornering. Whether you're crossing tram tracks or venturing onto gravel, the HKM-665683 stays composed and predictable.

Precision Braking with Motor Cutoff

Promax Disc Brakes

Mechanical disc rotors front and rear deliver consistent stopping power in wet or dusty conditions. Low maintenance and easy to adjust.

Brake Lever Cutoff Switch

Instantly disengages motor power when braking, preventing unintended acceleration and preserving brake pad life.

The brake lever integrated safety switch adds an extra layer of control, especially useful in stop‑and‑go city traffic. Riders can modulate stopping force with confidence, knowing the system reacts in milliseconds.

7‑Speed Drivetrain & Ergonomic Pedals

7‑Speed Gear Set

Smooth, indexed shifting via a thumb shifter. Find the perfect cadence for steep climbs or fast flats without breaking rhythm.

Folding Nylon Pedals

High-strength composite pedals fold for compact storage. Non‑slip pins keep feet secure even when trails get muddy.

The wide 7‑speed gear range pairs perfectly with the electric assist, letting you extend battery life by pedaling efficiently. The pedals’ folding design is a thoughtful touch for apartment dwellers or anyone who transports their bike in a car trunk.

Lightweight Alloy Frame & All‑Terrain Tires

Aluminum Alloy Frame

6061 aluminum construction balances low weight with high torsional rigidity. Smooth welds and internal cable routing enhance the clean aesthetic.

27.5 × 3.0″ Tires

Plus‑size tires provide a large contact patch for grip on pavement, dirt, and gravel. The volume acts as passive suspension, smoothing out small irregularities.

The oversized 27.5‑inch wheels with 3.0‑inch wide tires deliver a stable, confidence‑inspiring ride quality. Lower tire pressure capability (20–30 PSI) means fewer flats and a cushioned feel without the weight penalty of a fat bike.

Intelligent 500S LCD Display

Backlit LCD Readout

Sunlight‑visible display shows speed, battery level, assist mode, trip distance, and odometer. Intuitive button interface on the handlebar.

Smart Assist Levels

Select from 0–5 pedal assist levels or use the throttle for pure electric propulsion. Real‑time wattage monitoring helps you manage consumption.

The display also provides error code diagnostics, making troubleshooting straightforward. Its compact, waterproof design withstands rain and vibration, ensuring reliable performance ride after ride.

Technical Specifications

Motor 350 W rear hub, 70–80 Nm (51.6–59 lb‑ft)
Battery 36 V, 13 Ah (468 Wh) Li‑ion, removable
Top Speed 18.6–31 mph (30–50 km/h)
Range 19–37 miles (31–60 km)
Front Suspension ZOOM fork, 3.9 in (100 mm) travel
Rear Shock KS‑A5, 6.5 in (165 mm) travel
Brakes Promax mechanical disc, 160 mm rotors
Gears 7‑speed, thumb shifter
Frame 6061 aluminum alloy
Tires 27.5 × 3.0″ (27.5 × 3.0)
Display 500S LCD, backlit, IP65
Pedals Folding nylon composite

All specifications reflect the standard configuration. Actual performance may vary with rider weight, terrain, and environmental conditions.

Frequently Asked Questions

What is the maximum speed on throttle only?
In throttle‑only mode, the bike can reach approximately 20 mph (32 km/h) on flat ground, depending on rider weight and battery charge. Pedal assist allows speeds up to 31 mph (50 km/h) where local regulations permit.
How long does it take to fully charge the battery?
A full charge from empty takes roughly 5–6 hours using the supplied 2A smart charger. The battery can be charged on or off the bike.
Is the battery removable?
Yes, the 36V 13Ah battery is lockable and removable, making it convenient for charging indoors or securing the bike in public spaces.
What type of terrain can this bike handle?
With full suspension, plus‑size tires, and 7‑speed gearing, the HKM-665683 performs well on paved roads, hardpack dirt, gravel paths, and light trails. It is not designed for extreme downhill or motocross use.
Does the display show real‑time battery consumption?
Yes, the 500S LCD provides a live wattage readout and battery level indicator, helping you manage range effectively.

Your Peace of Mind

Free Shipping

On all orders. No minimum purchase required.

180‑Day Protection

Comprehensive purchase protection covers defects and workmanship for half a year.

30‑Day Money‑Back

Not satisfied? Return within 30 days for a full refund. Simple, straightforward.

24‑Month Warranty

Two years of coverage on the frame, motor, and battery. Ride with total confidence.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1260889036

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4.6 ★★★★★
Based on 13 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Pretty. Tiny. Hopefully has good battery life. UPDATE: The silver one was defective.
Color: Gold Raquel, Size: 14MM, Color: Gold Raquel, Size: 14MM
I bought both the gold and the silver ones. I have a collection of ring watches but most of them are sets you can buy for cheap. These are my first made by a well known watch company. They look big on picture but they are tiny. I bought it so when my smartwatch dies I have one on my ring to tell the time. I don't like going on my phone to check the time just to avoid distractions. I hope the battery lasts long. Updated review: I started using the gold one and it works great! The silver one wasn't working so I processed a return for it. However when they shipped the replacement, there was nothing inside the tin can fossil case. I called Amazon and they refunded me for the silver one. The product works great. I probably got a defective one. My fear is maybe someone took the ring before packing it for replacement. That's just wrong. I'm going to get the silver one from Macy's instead.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2024
S
Verified Purchase
Ss in calif
Alexandria, US
★★★★★ 5
Worth the money
Color: Gold Glitz, Size: 15MM
Beautiful watch ring. Looks more expensive than what the price. Very nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 1
Cheaply made
Color: Gold Glitz, Size: 15MM
I really love the concept and honestly it’s super cute BUT the diamond around the face of the watch fell off within the first wear:/ so unfortunate because it has so much potential.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
T
Verified Purchase
T. Hudson
Port Orchard, US
★★★★★ 3
Beautiful watch, great packaging, but didn’t work.
Color: Silver, Size: 15MM
I love my ring watch so much that this is my second one (I washed my first one 😩). I ordered the ring on Wednesday and I got it Friday. I was so happy to get it, great packaging and fast delivery imagine how hurt I was when it didn’t work. I am gonna try to get a new battery and I pray that works but with the price being 80 plus dollars this should have never been a problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
H
Verified Purchase
Heather Lynn Hawley
Belleville, US
★★★★★ 4
Need more in different styles!
Color: Gold Glitz, Size: 15MM, Color: Gold Glitz, Size: 15MM
This ring watch is perfect! The face on it isn’t as big as all the other ring watches; which is why I chose it! I wanted something more dainty, as I have small fingers and hands. This ring is shiny, and the little crystals sparkle so nicely! The band doesn’t pinch, and I can wear it on multiple fingers. Easy to set and has kept time so far. Would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026

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