We Are X-treme Electric Bicycles And We Work Non Stop To Make Electric Bicycling Safe, Fun And Most Important, Affordable For All.

The Rocky Road 48V Lithium Powered Electric Fat Tire Mountain Bicycle is a Lithium Battery powered Electric Bicycle cranking out 500 Watts from the Bafang High Torque Zero Resistance Clutch Motor.  This bike features a lightweight, compact lithium LiPo4 48V 10.4 Ah integrated battery pack providing a considerable amount of power greater than our 24V or 36V models.  

This bike comes with everything Aluminum - every bolt, every nut, every nipple, every spoke.  That means no rust!   The 100% hand welded lightweight aluminum frame bicycle has Atlus Shimano 9-Speed Gears & Shifting System, oversized MOZO Front Hydraulic Suspension & KS Rear Shock Suspension, aluminum rims with quick release axle on the front and a water proof quick disconnect on the rear and oversized Kenda 26 x 4.0 tires. 


X-Treme Rocky Road 48 Volt 500W Fat Tire Electric Mountain Bike
Power Electric
Watts 500 Watts
Amps 10.4 AH Integrated Lithium Battery (17AH Upgraded Battery Pack Available at Additional Cost)
Volts 48 Volts
Battery 48 Volt LiPo4 Lithium (lightweight)
Drive System Chain Driven by Rear Hub Motor or Pedal Power
Distance Up To 70 Miles Range Using Low PAS & Flat Terrain While Pedal Assisting
Charger 48 Volt Output UL Certified Charger (Charging Time +/- 3 Hours)
Tire Size Kenda Oversized Mountain Fat Tire & Tube - 26 x 4.0 Inch on Aluminum Wheels
Motor Bafang 500 Watt Zero Resistance Rear Hub Motor With Clutch
Controller 48 Volt 15 Amp Sealed Smart Controller
Braking System Tektro Disk Brakes
Pedals: Wellgo Aluminum Pedal Set
Front Wheel: Joytech Quick Release Hub
Throttle Type Variable Speed Thumb Throttle - SPAS Power Assisted - Pedal Power
LCD Display King Meter LCD Smart PAS Digital System With USB Phone Charging Port
Cargo Rack Not Included. It can be purchased separately.
Frame Type/Size 6061-T6 Temper Aluminum Alloy - Very Lightweight
Forks Oversized MOZO Hydraulic Front Forks
Suspension Front Hydraulic Suspension Included & KS Rear Shock Suspension
Front Sprocket Aluminum Alloy Sprocket
Derailleur Shimano® 9-Speed Atlus Gears & Shifter
Seat & Post Aluminum Alloy Adjustable Seat Post & Velo Mountain Bike Seat
Quick Release Front & Rear Wheels Have Quick Release Axles - Flip Lever
Gooseneck Aluminum VP
Handle Bars Aluminum Alloy Mountain Bike Handle Bars
Head Light Yes, included as free accessory add on - Battery Operated Snap-On LED (Not covered under warranty)
Accessories Drink Holder On Handle Bars Included. Rear Rack pictured is not included but can be purchased separately.
Bicycle Measurements Max Seat Height = 40.5" Inches / Min Seat Height = 32.5" Inches / Handle Bar Height = 41.75" Inches
Carton Size (L x W x H) 63 x 10 x 30
Bicycle In Box Weight 83 lbs
Bicycle Weight 67 lbs
Suggested Max Weight 350 lbs.
Warranty 1 Year Warranty & 1 Year Battery Warranty
Notes *depends on rider weight & terrain Distance obtainable when using SPAS


High-quality equipment

The Rocky Road comes standard with a 48V 10 Ah Lithium LiPo4 battery.   We now offer the option to purchase an upgrade to your Rocky Road to ship with a 48V 17 Ah Lithium LiPo4 which allows for an increased 60-65% distance.    This means you can get up to an additional 115 miles per charge (*depends on rider weight and terrain).

The Rocky Road comes equipped with the King Meter 5 Speed Smart Power Assist System (SPAS) with a USB Phone Charging Port.  The electronics of the X-Treme Electric Bicycle are controller via rider input on the LCD screen attached to the handlebars.  Smart PAS with 5 speeds will enable the bike to operate nearly twice as efficient as a non-smart assist e-bike because you select the power consumption (speed controls 1-5 setting) on the LCD during your ride.  This feature will allow your Rocky Road bike to possibly reach or exceed 70+ miles per charge when using low SPAS while always pedal assisting on flat ground under perfect conditions with a lightweight rider.  The LCD also indicates Speed, Distance and Battery Life.

The Rocky Road is faster than any model that X-Treme sells.  It has been tested climbing a 5-7% mountain grade continuously for 45 minutes while having to slow down for hairpin turns.

Front & rear Tektro disk brakes are standard on the Rocky Road ebike along with true VELO Brand Hand Grips & Mountain Bike Seat.

The 48 Volt Rocky Road 10Ah Fat Tire Mountain Bicycle now comes standard with a rear cargo rack and aluminum front & rear fenders at no additional cost. 

This electric mountain bicycle comes standard with a high-quality beverage holder. There is no extra charge!  This is a one of kind bike.  No other brands offer a Full Suspension Fat Tire Bike, only X-Treme!

  • 1-year warranty against all manufacturing defects.
  • 1 -year battery warranty.
  • X-Treme may send out spare parts and necessary parts to fix any issues.
  • Returns will not be accepted if damage is caused to the bike as a result of the rider.
  • All cancellations after 48 hours are subject to a 10% restocking fee.
  • All return fees will be at the cost of the customer unless manufacturing defect.