BULLS Sonic SX 1

BULLS Sonic SX 1 - a lightweight, sport-oriented e-bike

A Light Assist E-MTB that combines a sophisticated carbon frame with a natural Bosch Performance Line SX drive system. Thanks to its light weight, agile handling, and high-quality components, it offers a riding experience similar to that of a classic mountain bike, while also providing ample electric assistance for more challenging climbs and longer rides. It’s ideal for sporty off-road riding, forest trails, and daily training.

At the heart of the bike is the Bosch Performance Line SX with up to 55 Nm of torque, which features a compact design, low weight, and very natural performance. The motor delivers plenty of power on climbs while offering minimal resistance when pedaling without assistance. Thanks to the Bosch Smart System, the drive can be controlled using the Bosch Mini Remote and the integrated System Controller. After the Performance Upgrade, the motor can reach up to 60 Nm, 600 W, and 400% assistance.

Power is supplied by a slim, integrated 400 Wh Bosch CompactTube battery, which helps keep the bike lightweight and maintains the frame’s sleek appearance. For longer rides, capacity can be expanded using a compatible Bosch PowerMore 250 Wh battery. This combination allows you to tailor the bike to both shorter sport rides and all-day adventures.

At the heart of the model is the highly engineered Sonic carbon frame, which offers an excellent balance of low weight, stiffness, and durability. The sporty geometry contributes to precise handling and quick responses on the trail. The BULLS Sonic SX 1 is designed for riding on mixed terrain, unpaved roads, trails, and uneven surfaces.

Precise shifting is handled by the Shimano Deore 1×12 drivetrain, which offers a wide gear range for brisk crossings and steep climbs. Another major advantage is the dropper seatpost, which allows you to quickly lower the saddle during descents and technical sections. The Mavic wheels and Schwalbe Smart Sam tires complement the bike’s sporty character and provide good traction and stability on unpaved roads.

The BULLS Sonic SX 1 is the ideal choice for cyclists looking for a lightweight e-bike with a natural ride feel, a high-quality carbon frame, and components designed for sporty riding. The combination of the Bosch Performance Line SX drive, a 400 Wh battery, a 12-speed Shimano Deore drivetrain, and low weight creates a versatile e-MTB for trails, climbs, and long rides in nature.

E-bike range calculator

Battery capacity: 500 Wh

300 Wh 600 Wh 900 Wh 1200 Wh

Rider weight: 75 kg

50 kg 80 kg 110 kg 140 kg

Assistance mode: 3

Min 2 3 4 Max

Route profile: Flat

Flat

Medium

Hills

The e-bike range is approximately

*Factors affecting total range include technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique

Carbon fibre

E-bikes that use carbon fiber are a common choice among amateur and professional cyclists. Previously, it was mainly road e-bikes, but today you can enjoy the benefits of carbon on almost any type of e-bike. It remains an ideal choice among lovers of fast driving and off-road driving. The main advantage of e-bikes with a carbon frame is exceptional shock and vibration damping, they resist corrosion and wear very well and, compared to other materials, they excel in their low weight.

BOSCH Performance Line SX

Bosch Performance Line SX. Powerful and dynamic motor for intuitive handling and a unique driving experience. Innovative body and software. Although the motor has less torque - 55 Nm - it can deliver up to 600 W of power, the best value in the most compact design. The weight of the motor is limited to just 2 kg.

Modes and level of assistance: Turbo: 340 %; eMTB: 140–340%; AUTO: až 340%; SPRINT: 60-280%; TOUR+: 60-340%; TOUR: 140% Eco: 60 %

Battery Bosch CompactTube 400 Wh

Slim, integrated and compact battery. It fits seamlessly without affecting the aesthetics and handling of the e-bike. The CompactTube 400 battery offers the highest energy density of any Bosch eBike battery with its innovative battery cell technology.

With innovative battery cell technology, it offers the perfect combination of energy density, compact design and durability. With its 400 Wh, it provides a reliable power source for a variety of cycling adventures. It offers a great balance between size and performance. With a weight of just under 2kg, it also adds minimal weight to the electric bike, making it easier to handle and more comfortable for longer rides.

Bosch Top-tube System Controller w/ mini remote

Control unit for e-bikes with intelligent system. The range of functions and information is limited - so you have a quick overview that won't distract you while you ride. Integrated into the top tube - it's hardly noticeable and ideal for sporty trips and design-oriented e-bike fans.

LEDs indicate the riding mode and battery charge level in different colours. Made of durable material and protected from bumps and scratches. With just two buttons you can control the most important functions of your e-bike - switch on, switch off and change the riding mode. With the Mini Remote you can operate the control unit even more safely and conveniently. With the Mini Remote on, you can also control the display or use your smartphone as a display.

BULLS is one of the world's leading manufacturers of e-bikes. They introduced the first e-bike in 2010 and since then they are poving to be experts every year with new models just getting better and better. They are best klnown for their great combination of quality, equipment and beautiful design. Quality and precise engineering is obvious right from the start. Very popular are off-road all-suspension eMTB e-bikes with the latest motors and high battery capacity.

The importer of BULLS e-bikes is the company BIKETIME s.r.o.

Contact: BIKETIME s.r.o., K dolum 1924/42, 143 00 Praha 4, Czech republic, e-mail: info@biketime.cz, phone: +420 604 263 221, web: www.biketime.cz

BULLS E-bikes