The YKB-E04 Mountain Electric Bike is a professional off-road electric vehicle that combines minimalist aesthetics and powerful outdoor performance. Adopting an elegant low-key styling with premium grey body, silver frame and matched black tires, the whole bike presents a sleek and modern visual texture. Featuring a highly distinctive asymmetric wheel setup with a 27.5-inch front wheel and a 29-inch rear wheel, paired with a high-strength alloy mountain bike frame and quality suspension front fork, it delivers outstanding handling accuracy and riding stability on diverse road surfaces. Driven by the reliable Ananda M081 36V350W high-output motor, it provides strong and steady power support for various off-road adventures. Equipped with a large-capacity 36V20Ah battery, it achieves an ultra-long cruising range of over 140 kilometers, fully meeting the demands of long-distance cross-country cycling. The battery only takes 4–6 hours for full charging, realizing efficient and convenient energy replenishment. Supported by professional Shimano SL-M3100 + RD-M370 precision transmission system, high-grip Kenda K225 tires and sensitive disc brake system, the bike ensures smooth shifting, firm road grip and reliable braking safety. Its compact and practical body design maintains excellent agility on both rugged mountain trails and urban smooth roads, making it a versatile all-terrain electric bicycle for commuting, leisure and outdoor adventures.

Robust Power:Equipped with the authentic Ananda M081 36V350W high-power motor, this electric bike outputs ample and surging power torque. It delivers continuous and strong power assistance during riding, effectively reducing pedaling pressure and making daily cycling and off-road exploration more effortless and enjoyable.

Extended Range:Built with a high-capacity 36V20Ah lithium battery, the bike achieves an ultra-long cruising range of over 140 kilometers per full charge. It perfectly adapts to long-distance off-road cycling, cross-country travel and high-frequency daily commuting, completely solving long-distance riding endurance worries.

Stable Handling:Adopting a unique 27.5-inch front + 29-inch rear variable wheel setup, matched with a high-quality alloy mountain frame and shock-absorbing suspension front fork, the whole vehicle owns excellent structural stability and vibration filtering performance. It ensures balanced body control, precise steering and stable riding experience whether on flat roads or rugged off-road terrains.

Precise Transmission:Featured with the professional Shimano SL-M3100 + RD-M370 gear combination, the transmission system realizes ultra-smooth, sensitive and accurate gear switching. Riders can freely adjust gears according to real-time road changes, adapting to diverse complex terrains effortlessly and greatly improving riding efficiency and terrain adaptability.

Safe Braking:Configured with a highly sensitive and stable disc brake system, it features fast response and uniform braking force. It can complete rapid deceleration and stable emergency stop in various scenarios, providing all-round and robust safety protection for daily commuting and off-road riding.

Trendy Design:The integrated matching of grey body and silver frame creates a low-key, delicate and fashionable overall aesthetic. The minimalist and advanced color scheme fits modern outdoor and urban aesthetic trends, realizing perfect integration of practical performance and trendy appearance.

Long-distance Off-road Cross-country Riding:Benefiting from 350W strong power and 140KM ultra-long endurance, it is specially built for long-distance outdoor cross-country adventures. The unique variable-wheel structure and professional off-road configuration enable it to easily cope with mountain dirt roads, gravel roads and slope terrains, meeting high-intensity long-distance cycling needs.

Urban Daily Commuting & Leisure Travel:With agile body performance, efficient fast charging and stable safety configuration, it adapts to daily urban road commuting and weekend leisure travel. The labor-saving power assistance effectively reduces commuting fatigue and improves daily travel efficiency.

Complex Terrain Adventure Exploration:Relying on shock-absorbing suspension fork, high-grip Kenda tires and precise shifting system, it has strong complex terrain passability. It can freely shuttle between mountain trails and suburban rugged roads, satisfying outdoor enthusiasts’ daily terrain exploration and adventure riding demands.

Daily Fitness & Entertainment Cycling:The multi-scene adaptable power output and comfortable riding configuration are suitable for daily fitness cycling and outdoor leisure sports. Users can adjust riding intensity freely to relax body and mind while exercising.

Full Pre-riding Vehicle Inspection:Before daily riding and off-road adventures, fully check the firmness of the alloy frame and suspension front fork. Inspect the air pressure, tread integrity and wear condition of the 27.5-inch front wheel and 29-inch rear wheel Kenda K225 tires. Test the sensitivity of the disc brake system and the fluency of the Shimano shifting system, and confirm the remaining battery power to ensure the whole vehicle is in optimal working condition.

Standard Battery Charging & Maintenance:Use the original dedicated charger for charging, and place the bike in a dry and ventilated environment during energy replenishment. Follow the standard 4–6 hours full charging cycle, avoid long-term overcharging and long-term low-power idle storage. Fully charge the battery in advance before long-distance off-road riding to ensure sufficient power reserve.

Pre-riding Ergonomic Adjustment:Adjust the seat height and handlebar angle according to personal height and riding habits to maintain a comfortable long-term riding posture. Familiarize yourself with gear shifting and braking operation logic before off-road riding to ensure flexible and accurate control.

Gradual Start & Standard Power Output:Adapt to the power output characteristics of the Ananda M081 36V350W motor, start at a low speed and avoid sudden full-speed acceleration on complex terrains. Match low gear for uphill climbing to increase torque and save power, and shift to high gear for flat road cruising to optimize riding efficiency.

Professional Shimano Shifting Operation:Adjust gears reasonably according to real-time terrain changes. Shift down in advance when encountering steep slopes and bumpy roads to reduce riding load; shift up timely on flat and smooth roads. Avoid forced gear shifting during vehicle vibration to protect the transmission system.

Scientific Braking & Riding Safety Control:Slow down in advance when turning, going downhill and passing complex road sections. Make rational use of the disc brake system for stable deceleration and emergency stop. Avoid long-time continuous braking to prevent performance attenuation and ensure riding safety on off-road and urban roads.

Long-term Daily Maintenance & Care:Clean frame dust, tire mud and gravel stains in time after off-road riding. Regularly check tire wear and brake pad consumption, and lubricate the Shimano transmission and rotating parts periodically. Keep the motor and battery area dry and clean to maintain long-term stable comprehensive performance.

Q1: What are the advantages of the YKB-E04 variable wheel design?A1: The exclusive 27.5-inch front wheel and 29-inch rear wheel asymmetric setup integrates flexible steering and stable rolling performance. The smaller front wheel improves obstacle-crossing flexibility on rugged roads, while the enlarged rear wheel enhances running stability and power transmission efficiency, bringing better off-road handling than conventional single-size wheel bikes.

Q2: What kind of riding experience does the 36V350W Ananda motor bring?A2: The Ananda M081 350W high-power motor provides stronger torque output than ordinary 250W motors. It offers sufficient power reserve for uphill climbing and complex off-road terrains, ensuring smooth and effortless power assistance throughout the whole riding process and greatly reducing long-distance riding fatigue.

Q3: How practical is the 140KM ultra-long battery life?A3: Equipped with a 36V20Ah large-capacity battery, the bike supports a maximum cruising range of over 140 kilometers. It can easily meet the needs of ultra-long-distance cross-country cycling and multiple rounds of urban commuting, effectively reducing charging frequency and solving the endurance bottleneck of ordinary electric mountain bikes.

Q4: Why is Shimano SL-M3100 + RD-M370 shifting system reliable?A4: This professional Shimano transmission combination features sensitive response, smooth switching and high precision. It can adapt to frequent terrain changes during off-road riding, realizing seamless gear adjustment without jamming or slipping gears, ensuring stable power output and improving overall riding controllability.

Q5: What is the performance advantage of Kenda K225 tires?A5: Kenda K225 professional off-road tires adopt a high-grip anti-slip tread design, with excellent wear resistance, puncture resistance and terrain adaptability. It can maintain stable grip on dirt roads, gravel roads and wet slippery roads, effectively improving riding safety and terrain passability.

Q6: How does the disc brake system protect riding safety?A6: The high-sensitivity disc brake system has fast response speed and stable braking force. It can achieve rapid deceleration and stable emergency stop in high-speed cruising, downhill and complex off-road scenarios, providing lasting and reliable safety guarantee for all-scene riding.