KBO K Series K1 and K2 Folding Electric Bike Review: Affordable eBike with Rear Rack + $50 Off Discount Code K50

Looking for an affordable folding electric bike that combines everyday practicality, compact storage, and convenient cargo carrying? The KBO K Series K1 and K2 Folding Electric Bikes are designed for riders who want an electric bike that fits into busy lifestyles without requiring a full-size bike storage area. With a 500W motor, a 48V battery, 20-inch fat tires, front suspension, and a removable rear rack, the K Series offers a useful combination of comfort and versatility.

Whether you need an electric bike for commuting, running errands, exploring local trails, traveling in an RV, or enjoying recreational rides, the KBO K1 and K2 deserve a closer look. Both models feature a folding frame that makes storage and transportation easier, along with pedal-assist settings and a throttle for flexible riding.

Even better, you can save $50 with KBO K Series Discount Code K50. This review explores the bikes' specifications, folding design, motor performance, battery range, cargo-carrying features, advantages, and potential drawbacks to help you decide whether one of these affordable folding eBikes is right for you.

Overview: KBO K Series K1 and K2 Folding Electric Bikes

The KBO K Series is built around a simple idea: provide practical electric transportation in a compact, easy-to-store package. Unlike a conventional full-size electric bicycle, the K1 and K2 use smaller 20-inch wheels and a folding frame that can fit into many vehicle trunks, apartments, storage areas, and recreational vehicles.

Both models feature a 500W brushless geared hub motor and a 48V 10.4Ah battery with approximately 500Wh of capacity. KBO advertises a maximum range of up to 45 miles with pedal assistance and approximately 25 miles in throttle-only electric mode. Actual range depends on rider weight, terrain, temperature, speed, tire pressure, and how much assistance the rider uses.

The K Series also includes a Shimano seven-speed drivetrain, front suspension, mechanical disc brakes, an LCD display, and 20-by-3-inch tires. These features make the bikes suitable for a variety of everyday riding conditions, from paved neighborhood streets to relatively smooth gravel paths.

One especially useful feature is the included detachable rear rack. It provides a convenient mounting point for compatible bags, baskets, and other accessories, making the K Series more practical for shopping trips and commuting. The folding design also helps riders make the most of limited storage space.

The main difference between the two models is their frame style. The KBO K1 features a step-over frame, while the KBO K2 features a step-through frame. Choosing between them largely comes down to how you prefer to mount and dismount your bike.

For shoppers looking for an affordable folding electric bicycle with useful everyday equipment, the KBO K Series offers a compelling set of features. Use discount code K50 to save $50, subject to the brand's current coupon terms.

Check Latest Price: KBO K1 & K2 Folding Electric Bikes

Key Specifications

• Models: KBO K1 step-over and KBO K2 step-through
• Motor: 500W brushless geared hub motor
• Battery: 48V 10.4Ah lithium battery
• Battery capacity: Approximately 500Wh
• Advertised maximum range: Up to 45 miles with pedal assist
• Advertised throttle-only range: Approximately 25 miles
• Top assisted or throttle speed: Up to 20 mph, subject to configuration and local regulations
• Drivetrain: Shimano seven-speed derailleur
• Wheel size: 20 inches
• Tire size: 20 x 3 inches
• Suspension: Front suspension fork
• Brakes: 160mm mechanical disc brakes
• Display: Multifunction LCD
• Pedal assistance: Five assistance levels
• Throttle: Thumb throttle
• Frame: 6061 aluminum alloy
• Rear rack: Detachable rack included
• Maximum total payload: 280 pounds, including the rider and cargo
• Weight: Approximately 55 pounds with battery and 48 pounds without battery
• Folded dimensions: Approximately 35 x 20 x 28 inches
• Charging time: Approximately four to six hours
• Recommended rider height: Approximately 4 feet 7 inches to 6 feet 3 inches
• Discount code: K50 for $50 off, subject to current offer terms

Specifications and advertised performance can vary by configuration and riding conditions. Confirm the latest product details, pricing, and coupon eligibility on the manufacturer's website before ordering.

Design and Folding Portability

One of the biggest reasons to consider the KBO K Series is its space-saving design. Traditional electric bikes can be difficult to store in small apartments, compact garages, dorm rooms, or RVs. The folding frame helps address that problem by allowing the bike to be reduced to a more manageable size when it is not being ridden.

KBO states that the folding process takes two main steps and can be completed in approximately 20 seconds once the rider is familiar with the mechanism. The folded dimensions are about 35 inches long, 20 inches wide, and 28 inches high. These measurements make the bike easier to store than many full-size electric bicycles, although you should measure your intended storage space before purchasing.

Portability still requires some effort. At approximately 55 pounds with the battery installed, the K Series is not a lightweight bicycle to carry up several flights of stairs. Removing the battery reduces the lifting weight, but the bike may still be cumbersome for some riders to transport by hand. Folding is particularly useful for storage and vehicle transport rather than frequent long-distance carrying.

KBO K1 vs. KBO K2: Which Frame Is Better?

The KBO K1 uses a traditional step-over frame. Riders who prefer a conventional bicycle shape may appreciate this design, especially if they are comfortable swinging a leg over the frame when getting on and off.

The KBO K2 features a step-through frame that allows riders to mount and dismount without lifting a leg as high. This can be more convenient for people who wear restrictive clothing, make frequent stops, or simply prefer easier access. The best option depends on your mobility, flexibility, and personal riding preference.

Both versions share the core folding concept and many of the same major components. Color availability may differ by model, so check the current selection when ordering.

Motor Performance and Riding Experience

The KBO K Series uses a 500W brushless geared hub motor designed to provide practical assistance for everyday transportation. It can help riders accelerate from stops, maintain momentum, and manage moderate inclines without relying entirely on leg power.

With a stated top speed of up to 20 mph, the K Series is aimed at everyday riding rather than high-speed electric dirt biking. It is well suited to neighborhood trips, paved bike paths where permitted, commuting, and recreational rides. Riders should always follow local eBike rules regarding throttle use, speed limits, and where electric bicycles are allowed.

The motor works alongside a thumb throttle and a five-level pedal-assist system. The throttle can help reduce pedaling effort when appropriate, while pedal assistance lets riders contribute their own power with electrical support. This flexibility is useful when transitioning between flat roads, gentle hills, and stop-and-go traffic.

The bike also includes a Shimano seven-speed drivetrain. Mechanical gearing lets riders select a suitable gear for different riding conditions, while the electric assistance can help make pedaling more manageable. Combining the gears with the appropriate pedal-assist setting can improve comfort and help conserve battery power.

KBO lists a climbing capability of up to 30 degrees for the motor. This figure should be treated as a manufacturer claim rather than a guarantee that the bike can climb every steep hill. Actual hill-climbing performance depends on rider and cargo weight, surface traction, battery charge, gearing, and how long the motor must sustain the effort.

Battery, Charging, and Riding Range

The KBO K1 and K2 use a 48V 10.4Ah lithium battery with approximately 500Wh of energy capacity. The battery is integrated into the bike's design and can be removed for charging or to make transportation easier. Its integrated placement also gives the bicycle a cleaner appearance.

KBO advertises a range of up to 45 miles per charge when using pedal assistance, while throttle-only riding is listed at approximately 25 miles. These numbers are useful planning estimates, not guaranteed distances. Riders who use the throttle heavily, travel at higher speeds, climb hills, or carry heavier loads may experience shorter range.

For daily commuters, the advertised range may be enough for several short trips between charges. Recreational riders can also benefit from the ability to travel farther than they might comfortably manage on a conventional bicycle. However, it is sensible to leave a battery reserve rather than planning a route that uses the entire advertised range.

The estimated charging time is four to six hours using the supplied charger. Charging overnight or while the bike is parked at home can help keep it ready for the next ride. Follow the manufacturer's battery charging, storage, and maintenance instructions, and use the correct charger.

The removable battery is particularly practical for apartment dwellers and people who do not have a convenient outdoor charging outlet. You can bring the battery inside instead of having to position the entire bicycle beside a wall outlet.

Rear Rack and Everyday Cargo Convenience

The included detachable rear rack is one of the KBO K Series' most useful everyday features. Instead of being limited to a backpack, riders have a mounting point for compatible cargo accessories. Depending on compatibility and the manufacturer's instructions, these can include pannier bags, a rear basket, or a suitable rack-mounted bag.

A rear rack can make a folding eBike more useful for errands, commuting, and short shopping trips. It provides somewhere to carry personal belongings, a change of clothes, a small bag of groceries, or commuting essentials without keeping everything on your back.

The rack is detachable, which gives owners the option of removing it if they want a different setup. Before installing accessories, check their dimensions, mounting requirements, and weight limits. Do not assume that the bike's overall 280-pound payload rating is the rack's own load rating.

Remember that the 280-pound maximum payload refers to the combined rider and cargo load. It does not mean the rear rack itself can safely carry 280 pounds. Distribute cargo carefully, secure bags so they cannot contact the wheel, and stay within all applicable component limits.

The folding frame and rear rack work together to make the K Series more versatile than a folding bicycle designed only for occasional recreational use. It can serve as a compact transportation option for people who want electric assistance and a practical way to carry everyday items.

Tires, Suspension, and Braking

The KBO K Series comes with 20 x 3-inch tires. Their wider profile can provide a stable, planted feel on pavement and packed gravel compared with narrower tires. The smaller wheel diameter also helps keep the overall bike compact when folded.

These are versatile tires for casual riding, but they do not turn the K Series into a dedicated mountain bike. Loose sand, deep mud, technical trails, and rough off-road terrain can require more specialized equipment and riding skills. Check tire pressure regularly and use the manufacturer's recommended range for your conditions.

The front suspension fork is designed to soften some of the bumps encountered on uneven roads and paths. It can make ordinary commutes and recreational rides more comfortable, especially when passing over cracks and small surface irregularities. The bike does not have a full-suspension design, so riders should not expect a rear shock to absorb larger impacts.

For stopping, the K Series uses 160mm mechanical disc brakes. Disc brakes provide controllable stopping power in a variety of everyday conditions, but performance depends on setup, pad condition, wheel alignment, and the weather. Inspect the brakes regularly and allow extra stopping distance on wet or slippery surfaces.

The bike also includes an LED headlight for improved visibility. Riders who regularly travel at night should check whether additional rear lighting and reflective accessories are needed for their routes and local requirements.

LCD Display and Ease of Use

The multifunction LCD display gives riders access to key riding information, including speed, battery status, distance, and pedal-assist level. These details make it easier to monitor a trip and adjust assistance according to terrain or remaining battery power.

Five pedal-assist levels allow riders to choose between lower assistance for a more active ride and higher assistance when they want to reduce physical effort. Using a lower setting on flat ground can help conserve battery energy, while a higher setting may be useful for hills or when starting from a stop.

The K Series is listed as arriving approximately 90% pre-assembled. Some final assembly is still required, so buyers should carefully follow the included instructions and verify that the handlebars, pedals, brakes, wheels, and other components are properly secured before riding. If you are unfamiliar with bicycle assembly, a professional safety check is a sensible precaution.

Pros of the KBO K Series K1 and K2

• Affordable folding eBike concept: Designed to provide electric assistance and compact storage without the size of a conventional full-size bike.
• Two frame options: Choose the K1 step-over or K2 step-through design based on your preferences.
• 500W geared hub motor: Provides useful assistance for commuting and recreational rides.
• Removable 48V battery: Makes charging and transporting the battery more convenient.
• Useful advertised range: Up to 45 miles with pedal assist under favorable conditions.
• Included rear rack: Adds practical cargo-carrying capability for everyday errands and commuting.
• 20 x 3-inch tires: Offer a wider contact patch for everyday riding stability.
• Front suspension: Helps absorb some bumps on uneven roads and paths.
• Seven-speed drivetrain: Provides gearing options for changing terrain.
• Compact folded dimensions: Make storage and vehicle transport easier.
• Convenient LCD display: Shows important riding and battery information.

Cons of the KBO K Series K1 and K2

• Not especially light: At approximately 55 pounds with the battery, carrying the folded bike can be difficult for some people.
• Real-world range varies: The advertised maximum is not guaranteed, particularly when using the throttle frequently or riding on hills.
• Mechanical disc brakes: Require routine adjustment and maintenance and are not the same as hydraulic brakes.
• Front suspension only: There is no rear suspension to absorb larger bumps.
• Smaller wheels: The 20-inch wheels suit a compact folding design but may feel different from the larger wheels on full-size electric bikes.
• Limited total payload: The combined rider and cargo weight must remain within the 280-pound limit.
• Assembly is still required: Pre-assembly does not eliminate the need for final setup and safety checks.
• Not designed for extreme off-road riding: Riders seeking a dedicated high-performance mountain or dirt bike should consider a more specialized model.

Who Should Buy the KBO K Series Folding Electric Bike?

The KBO K1 and K2 are worth considering for commuters, apartment residents, students, RV travelers, and recreational cyclists who value compact storage and electric assistance. They may also suit riders who want a practical bike for short trips around town rather than relying on a car for every errand.

The included rear rack is a particular advantage for riders who carry bags or shopping. Meanwhile, the folding frame can help people with limited storage space keep an eBike at home or transport it in a suitable vehicle.

The K Series may be less suitable for riders who need an exceptionally lightweight folding bicycle, a high-speed commuter, full suspension, or a bike built for demanding technical trails. It is also important to verify that the folded bike will fit in your vehicle and that you can comfortably lift or maneuver its weight.

How to Save $50 with KBO Discount Code K50

If you decide that the KBO K Series is a good fit, you can look for savings with KBO Bike Discount Code K50. The code is intended to provide $50 off an eligible purchase, subject to current promotional terms and exclusions.

• Visit the KBO K Series product page using the button below.
• Choose the K1 or K2 frame and your preferred available color.
• Add the selected folding electric bike to your cart.
• Enter K50 in the discount-code field at checkout, if available.
• Confirm that the discount appears in your order total before completing your purchase.

Promotions and product prices can change, so check the checkout total to verify that the code is accepted. If the code does not apply, review the current offer conditions or contact the seller before placing your order.

Final Verdict: Is the KBO K Series Worth Buying?

The KBO K Series K1 and K2 Folding Electric Bikes combine practical everyday features in a compact package. The 500W motor, 48V battery, seven-speed drivetrain, front suspension, wide tires, and LCD display provide a useful foundation for commuting and recreational riding. The folding frame is especially appealing to people who need to store their bikes in limited spaces or transport them in a suitable vehicle.

The included detachable rear rack adds another layer of everyday usefulness, giving riders a convenient way to carry commuting essentials and small loads. The choice between the K1 step-over frame and K2 step-through frame also makes it easier to select a design that suits individual mounting preferences.

There are trade-offs to consider. The bike weighs approximately 55 pounds with its battery, its mechanical disc brakes need routine maintenance, and the advertised range depends on riding conditions. Its front suspension and compact wheels are aimed at general-purpose riding rather than challenging off-road adventures.

Overall, the KBO K Series is worth considering if you want an affordable folding electric bike with a useful rear rack, practical commuter features, and a removable battery. If the specifications meet your needs, use discount code K50 for a potential $50 saving on an eligible purchase.

Buy the KBO K1 & K2 Folding Electric Bikes — Save $50 with Code K50

Frequently Asked Questions About the KBO K Series

1. What is the difference between the KBO K1 and K2?

The KBO K1 has a step-over frame, while the KBO K2 has a step-through frame for easier mounting and dismounting. They share many of the same core specifications, but frame style and some color options differ.

2. What is the maximum range of the KBO K Series?

KBO advertises up to 45 miles per charge with pedal assistance and approximately 25 miles in throttle-only mode. Actual range depends on rider weight, terrain, speed, temperature, battery condition, and assistance settings.

3. Does the KBO K1 and K2 come with a rear rack?

Yes. KBO states that every K1 and K2 folding electric bike comes with a detachable rear rack. Compatible bags and accessories can help make the bike more useful for commuting and errands.

4. How much does the KBO K Series weigh?

The bike weighs approximately 55 pounds with the battery and 48 pounds without it. Although the folding design helps with storage and transportation, the bike may still be heavy to carry for some riders.

5. What is the maximum speed of the KBO K Series?

The manufacturer lists a top speed of up to 20 mph. Actual operation depends on the bike's configuration, rider and terrain, and applicable local electric-bike laws.

6. How long does it take to charge the battery?

The advertised charging time is approximately four to six hours. Charging time can vary with battery charge level and conditions. Follow the manufacturer's charging and storage instructions.

7. What is the weight capacity of the KBO K Series?

The stated maximum total payload is 280 pounds, including the rider and cargo. The rear rack has its own limits, so check the rack's instructions before carrying heavy items.

8. How can I get $50 off the KBO K Series?

Use discount code K50 at checkout on an eligible purchase, if the offer is currently active. Visit the product page through the shopping button in this review and confirm the discount appears before completing your order.

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