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Challenger Pro I-PAS

Rattan Challenger Pro Ebike 

Challenger Pro Ebike is an updated version of the Challenger ebike, on which we have just completed sales. We have applied our latest Ebike technology, IPAS. The technology allows the motor to be energy efficient, increasing the range of the bike by 50%. The 350W motor powered by a high-performance battery with Samsung cells supports the bike has a range of 50-80 miles. Equipped with front light to ensure a safe riding experience. The front of the centrally mounted LCD display shows battery power, current speed, pedal assist level, and travel distance. Luxury seats, adjustable handlebars and ergonomic grips allow you to ride comfortably throughout the day. 

    Higher Performance

    Challenger (Sold out)  Challenger Pro
    Motor Traditional motor Eco motor
    Controller Traditional controller Eco controller
    Display 3.1'' LCD 4.3'' LCD 
    Throttle range 25miles 50miles
    PAS range 40miles 80miles
    I-PAS Tech No Yes

     Download Manual

    350W high speed brushless gear motor

    As the most important part of the IPAS system, we changed the internal structure of the motor so that it can generate electricity when the rider goes downhill or gliding, providing additional energy to the battery. Of course, it also has the function of a general motor. With this 350W high speed brushless gear motor, you can reach to the top speed in 15s. It will provide you with 45Nm of torque to help you conquer most of the rugged terrain. And this motor is very friendly to those beginners who just start riding with Ebike. 

    48v 10.4ah Lithium-Ion Battery with Samsung 26J M Cells

    The battery is one of the most important parts of an electric bike, so we only use the Samsung brand cells to ensure the long life and high safety. We offer a 3- Year Warranty to this great battery. With our I-PAS technology, this battery will help you to  reach 50-80miles range per charge. When fully charged, the battery lights are 3 green 1 red.

    160mm Mechanical Disc Brakes

    With these front and rear mechanical 160mm disc brakers, you can stop the bike in a more effective way, even in loose terrain. Stop faster when it counts the most. The mechanical disc brakers are currently the more popular type of disc brake for the average mountain biker. One of the main perks of the mechanical disc brake is that the cables are far easier to install and they work more efficiently.


    A 7-speed bike is a great bike for a person who rides on tricky terrain. It’s main purpose is to let the bike adapt to rough conditions and accommodate inclines, bumps and other difficulties. On a 7-speed bike, the lower gears make it easier to pedal and the higher gears allow for better movement going downhill. Compared to a 3-speed bike, a 7-speed is preferable for a rider who travels on varying terrain.

    With this Shimano 7-Speed Classic Transmission System, you can easily increases hill-climbing power, further range variation, and greater terrain adaptability. You can adjust suitable speed to complete your journey.

    7-Speed, 14-28 Tooth Freewheel

    The 7 speed, 14-28 free wheel means you can shift to a larger cog for uphill riding, downshift to a smaller cog at high speeds. This greatly increases the comfortable performance of the bike on hilly terrain. Multiple geared bikes also require replacement gears less often, because abrasion is distributed among multiple chainrings rather than a single chainring.

    buy with confidence!

    Fast Free Shipping from the US. (3-7 business days)
    1-Year All-Inclusive Warranty: We stand behind our products with confidence!
    Consumer Direct: We gave up the traditional business model, no middlemen earned the difference.
    Best Customer Service: We've developed a professional after-sales team, any product issues or advice, please feel free to contact us at:
    Fast & Easy Assembling: We did most of the assembly for you! Here is the Assembling Video On Our Youtube Channel