The RCB GK4 folding portable city bike is the ideal lightweight folding bike for urban commuting, short-distance travel, and family adventures. Designed with a classic, versatile grey finish and fully compliant with EU standards, this folding bike combines portability, performance, and safety to redefine your daily ride.

At just 12.8KG net weight, the RCB GK4 is one of the lightest folding bikes on the market, making it easy to carry with one hand. Its quick-release folding mechanism lets you fold it down to a compact 840*350*625mm, perfect for storing in car trunks, under desks, or beside public transport seats. When unfolded, it measures 1490*570*1080mm, offering a stable, comfortable ride for city streets and light trails alike. Whether you’re solving the “last mile” of your commute or heading out for a weekend ride, this portable folding bike fits seamlessly into your lifestyle.

The RCB GK4 folding bike features a fully adjustable design to suit riders of all sizes. The handlebar height telescopes from 960mm to 1105mm, while the seat height adjusts freely from 660mm to 915mm. This makes it perfect for users between 140cm and 190cm tall, and suitable for anyone aged 12 and above – so the whole family can enjoy cycling together. No more awkward riding positions; this folding bike adapts to you.

Equipped with a precision 7-speed smooth-shifting system, the RCB GK4 delivers seamless gear changes for effortless navigation of city streets, gentle slopes, and light trails. Paired with 20-inch wear-resistant, non-slip pneumatic tires and lightweight aluminum alloy rims, this folding bike offers exceptional grip and stability, even on wet or uneven surfaces. Whether you’re cruising to work or exploring the city, the 7-speed system lets you switch speeds with ease, making every ride more efficient and enjoyable.

Built with a sturdy welded and painted aluminum alloy frame, the RCB GK4 folding bike is designed to last. It supports a maximum load capacity of 100KG, making it suitable for both riders and light cargo. For safety, it features front and rear dual disc brakes, delivering powerful, consistent stopping power even in wet conditions. Combined with standard front and rear reflectors, visibility is maximized for night riding. The 20-inch pneumatic tires offer excellent traction, and with a minimum pedal height of just 120mm from the ground, you can navigate obstacles smoothly, giving you greater confidence on every ride.

The RCB GK4 folding portable city bike comes with everything you need to start riding right out of the box: the complete bike, an L-shaped hex key tool kit, a multilingual user manual, a combination bike lock, and a tire pump. No extra purchases required – just unpack, assemble, and go! This all-inclusive package makes it the perfect choice for anyone looking for a hassle-free, reliable folding bike for commuting and leisure.

RCB GK4 complies with or has the following certifications:
CE certification
GPSR (EU) 2023/988
2006/42/EC
EN 14764
StVZO certification(DE）
EU RoHS Directive. For advance access to electronic documents, please contact [email protected]