Lightest Road Bike Reviewed: The Best Featherweight Options for Riders

A lightest road bike helps riders to get faster endurance or chase steep climbs. A rider knows every gram saved makes a difference. In 2025, lightweight road bikes are redefining. Manufacturers are focused on what is possible on two wheels. The advanced carbon frames, refined drivetrains, and smart component designs have given access to machines that combine agility with remarkable efficiency.

This guide takes a closer look at the lightest road bike available this year. The innovations behind its featherweight build, and the key factors you should weigh before investing in one.

The Best Lightest Road Bike in 2025-Engwe N1 AIR

ENGWE is a UK-based brand. It is well known across Europe and has designed a bike that directly answers this need. The ENGWE N1 AIR is a 250W ultra-lightweight carbon fiber city e-bike weighing just 15.6 kg. With a 100 km long range, Shimano 7-speed transmission, and premium build quality, it positions itself as one of the best road bikes for urban commuters in 2025.

Let’s explore if the N1 AIR is the right choice for you or if another ENGWE model suit you better.

Who Is the ENGWE N1 AIR For?

This road bike is ideal if you:

• Want a bike that is light enough to carry but strong enough for daily commuting.

• Need a long-range e-bike that lasts up to 100 km per charge.

• Live in Europe and want a model that is fully legal under EU e-bike laws.

• Value modern design and carbon fiber durability.

Who Is the N1 AIR Not For?

N1 AIR is impressive, but it cannot be perfect if you:

• Want a cargo or heavy-duty bike.

• Prefer step-through frames, especially for women or older riders.

• Need a throttle-only e-bike, which is not legal in the EU market.

• Need more torque for steep hill climbing.

Key Features of ENGWE N1 AIR

Let’s take a closer look at the ENGWE N1 AIR, what it offers and what it does not. Here is a detailed breakdown of its most important features.

Ultra-Light Carbon Fiber Frame

The highlight of the N1 AIR is its carbon fiber frame. It reduces the bike’s weight to just 15.6 kg. When compared to traditional aluminum bikes, it is easy to lift, carry, or maneuver in tight spaces. Also, carbon fiber offers impressive strength and vibration absorption which makes long distance rides smoother.

250W MIVICE Rear Hub Motor

The motor is designed for urban commuting. With 250W power and 40 Nm torque, it easily handles flat roads and moderate city slopes (up to 10°). The top speed is capped at 25 km/h to comply with EU regulations.

Long-Range Samsung Battery

A 36V 10Ah Samsung lithium-ion battery powers the N1 AIR. It delivers up to 100 km range on PAS 1 level. It is one of the most efficient e-bikes in this weight class. Charging takes 5-8 hours, depending on usage. The removable design means you can charge it at home or work.

Shimano 7-Speed Transmission

The inclusion of Shimano 7-speed gears gives riders flexibility. The gear adapts smoothly to different conditions, whether you are tackling city traffic, cruising on flat roads, or climbing light hills.

Safety and Comfort Features

• Brakes: It is equipped with 160mm mechanical disc brakes for reliable stopping power.

• Lights: A bright front light provides night visibility. The solar-powered tail light adds eco-friendly safety.

• Tires: 700*38C spoke tires provide a balance between speed and grip. It is suitable for both city roads and light countryside rides.

Smart LCD Display

A color LCD display shows real-time stats like speed, battery level, and distance traveled. So you can easily manage your ride.

Specifications at a Glance

Other Lightweight Electric Bike Options

The ENGWE N1 AIR stands out for its ultra light design. But not every rider has the same priorities. Lifestyle and riding style greatly impact bike selection. But you do not need to worry as ENGWE offers several excellent alternatives..

ENGWE EP-2 Boost

For city riders who need flexibility the EP-2 Boost is a smart choice. Its folding design makes it easy to store in small apartments or carry on public transport. Despite being compact, it delivers solid performance for everyday commuting and short trips.

ENGWE P275 SE

If you are looking for a step through commuter bike, the P275 SE is designed for comfort and accessibility. It is especially popular among women and riders who prefer effortless mounting and dismounting. With a smooth ride and practical design, it is an excellent daily commuter.

ENGWE LE20

When carrying capacity and distance matter most, the LE20 shines. This is a cargo-capable long-range e-bike. It is built for riders who need extra power and endurance. The LE20 is engineered for utility without losing ENGWE’s sleek style.

Each of these alternatives maintains ENGWE’s trusted build quality. Each address has specific needs. 

Quick Comparison: ENGWE Lightweight E-Bike Options

Whichever model you choose, ENGWE ensures durability, style, and compliance with European e-bike standards.

 FAQs

Which is the lightest road bike in 2025?

The lightest road bike in 2025 is the ENGWE N1 AIR. It weighs 15.6 kg. A carbon fiber city e-bike built for speed and efficiency.

Is the ENGWE N1 AIR legal in Europe?

Yes. It meets EU standards with a 250W motor and 25 km/h top speed.

Can the battery be removed for charging?

Absolutely. The Samsung battery is removable and can be charged indoors.

Which is the best lightweight bike for adults?

The ENGWE N1 AIR is the best lightweight bike for adults. It offers a strong carbon frame, 100 km range, and easy handling for daily rides.

Final Thoughts

If your priority is lightweight, legal compliance, and long range, the ENGWE N1 AIR is an excellent choice. Its carbon fiber frame, Samsung battery, and premium build make it stand out in the road e-bike category. At just 15.6 kg, it is easy to carry and perfect for daily commuting.

For those who want something different, ENGWE’s EP-2 Boost, P275 SE, or LE20 are better alternatives. But the N1 AIR remains one of the lightest and most advanced city road bikes in 2025.