10 Best Lightest Folding Bike 2025 in the United States

The INSDRGN Electric Bike is a solid choice for those looking for a compact folding e-bike with decent power and comfort. Weighing about 64 pounds, it’s lighter than many electric bikes but not the very lightest in the folding category, mainly due to its sturdy high carbon steel frame which offers durability but adds weight. Its foldable design shrinks to a compact size, making it easy to carry and store, which is great for city commuters or travelers. The 14-inch wheels are smaller than typical bike wheels, which helps with portability and maneuverability but might feel a bit less stable on rough surfaces.

It has a single gear, so if you plan on riding varied terrains or want more speed options, this might feel limiting. However, the powerful 500W motor and 30 Nm torque give you good assistance on hills and a top speed around 20 mph, suitable for urban riding. Comfort is a standout feature here, thanks to nine shock absorbers that smooth out bumps effectively for a comfortable ride on different surfaces. The front and rear disc brakes with a high brake rotor ratio offer strong stopping power, enhancing safety.

The battery can take you up to 28 miles on a single charge, which is respectable for daily commuting. If you prioritize a balance of power, comfort, and portability in a folding electric bike, the INSDRGN is worth considering, but if you want something ultra-lightweight or with multiple gears, you might want to explore other options.

The Brompton C Line 2 Speed Folding Bike is a standout choice for city riders who want a lightweight yet durable folding bike. Weighing around 26.7 pounds, it's easy to carry and folds down quickly into a compact package that fits under desks, in cars, or on public transport. Its 16-inch wheels and chromoly steel frame strike a good balance between strength and portability, making it sturdy enough for daily use without feeling bulky.

It features a simple 2-speed gear system, which is adequate for most urban terrain and gentle hills but may feel limited if you often face steep inclines or want faster speeds on longer rides. The folding mechanism is well-designed, allowing you to lock the bike securely in its folded form and even roll it like a small suitcase, which adds extra convenience to your commute.

Comfort-wise, the bike comes with a saddle that has an integrated carry handle and three handlebar height options to suit different riding styles. It also includes practical features like fenders, a bell, and reflectors for safer city riding. While the steel frame adds some weight compared to aluminum alternatives, it promises long-lasting durability backed by a 7-year warranty. This bike is ideal if portability, build quality, and ease of use are your top priorities for urban commuting. It is not designed for rugged terrain or high-speed performance, but it excels at making everyday city travel simple and reliable.

The Brompton C Line 12-Speed is a standout option for anyone looking for a lightweight, compact folding bike built for city commuting and beyond. Weighing just 26.4 pounds, it’s relatively easy to carry and fits well under desks, in car trunks, or on public transport, which is key for urban riders. The bike folds up quickly in about 20 seconds, making it highly convenient for those who need to switch between cycling and other travel modes. Brompton’s folding mechanism is known for its clever design, and this model continues that tradition, allowing it to be rolled like a small suitcase when folded, especially if you add the optional roller rack.

The frame is made of hand-brazed Chromoly steel, which offers a strong and durable structure while keeping the weight manageable. The 16-inch wheels strike a good balance between compactness and ride quality, and the 12-speed gearing provides a wide range to handle city hills and longer rides comfortably. This makes it versatile whether your route is flat or has some elevation. Comfort features include three handlebar height options so you can choose what fits your riding style best, plus included accessories like fenders and a bell add practical value for everyday use. It comes fully assembled except for attaching the saddle, easing the start for beginners. The bike is rigid with no suspension, which is typical for this class but means less shock absorption on rough roads.

A minor downside could be the price, as Brompton bikes are premium products with a reputation for quality and longevity, which is backed by a 7-year frame warranty. The folding size is compact but Brompton’s unique fold is a bit different from other brands, so it may take a little getting used to. Also, the 16-inch wheels aren’t as smooth over very rough terrain compared to larger wheels. This makes the Brompton C Line 12-Speed an ideal choice for urban commuters or anyone needing a reliable, quick-folding bike that's easy to transport and store. Its lightweight steel frame, versatile gearing, and thoughtful design make it a practical choice, especially if you value craftsmanship and long-term durability.