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X-Treme Boulderado 48 Volt 10.4 Amp or 17 Amp Fat Tire Step-Through Electric Mountain Bicycle

X-Treme Boulderado 48 Volt 10.4 Amp or 17 Amp Fat Tire Step-Through Electric Mountain Bicycle

by X-treme
SKU BOULDERADO48-17-B
Save up to 10% Save 10%
$2,299.00
$1,999.00 - $2,299.00
$2,299.00
$2,069.99
$1,799.99 - $2,069.99
$2,069.99

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Color: Black

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

The Boulderado 48 Volt Lithium Powered Electric Fat Tire Step-Through 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 upgraded LiPo4 48 volt 17 Ah integrated battery pack providing a considerable amount of power beyond our 10 amp battery allowing for up to an additional 75 miles range (*depending on rider weight & terrain).  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, 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.  Front & rear Tektro disk brakes are standard on the Rocky Road 48 Volt Electric Mountain Bicycle along with true VELO Brand Hand Grips & Mountain Bike Seat. This electric mountain bicycle comes standard with a rear cargo rack and high quality beverage holder.  There is no extra charge!  

 The Boulderado comes equipped with the King Meter 5 Speed Smart Power Assist System (SPAS).  The electronics of the X-Treme Electric Bicycle are controlled 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 Boulderado 48 Volt to possibly reach or exceed 150+ miles per charge when using low SPAS while always pedal assisting on flat ground under perfect conditions with a light weight rider.  The LCD also indicates Speed, Distance and Battery Life.

 The Boulderado 48 Volt Lithium Powered Electric Fat Tire Step-Through Mountain Bicycle is faster than any model we sell.  It has been tested climbing a 5-7% mountain grade continuously for 45 minutes at 18 mph while having to slow down for hair pin turns.

X-Treme Boulderado
Power Electric
Watts 500 Watts
Amps 10.4 AH Integrated Lithium Battery
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
Cargo Rack Included
Frame Type/Size 6061-T6 Temper Aluminum Alloy - Very Lightweight - Step-Through
Forks Oversized MOZO Hydraulic Front Forks
Suspension Front Hydraulic Suspension Included
Front Sprocket Aluminum Alloy Sprocket
Derailleur Shimano® 9-Speed Atlus Gears & Shifter
Seat & Post Aluminum Alloy Adjustable Seat Post & Velo Oversized 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
Bicycle Measurements Max Seat Height = 41.3" Inches / Min Seat Height = 33.5" Inches / Handle Bar Height = 43.3" Inches
Carton Size (L x W x H) 60 x 31 x 11
Bicycle In Box Weight 81.5 lbs
Bicycle Weight 70 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


  • 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.
Order shipment preparation takes 3 days. Once shipped orders usually takes 5-8 days to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.
 
 

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

The Boulderado 48 Volt Lithium Powered Electric Fat Tire Step-Through 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 upgraded LiPo4 48 volt 17 Ah integrated battery pack providing a considerable amount of power beyond our 10 amp battery allowing for up to an additional 75 miles range (*depending on rider weight & terrain).  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, 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.  Front & rear Tektro disk brakes are standard on the Rocky Road 48 Volt Electric Mountain Bicycle along with true VELO Brand Hand Grips & Mountain Bike Seat. This electric mountain bicycle comes standard with a rear cargo rack and high quality beverage holder.  There is no extra charge!  

 The Boulderado comes equipped with the King Meter 5 Speed Smart Power Assist System (SPAS).  The electronics of the X-Treme Electric Bicycle are controlled 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 Boulderado 48 Volt to possibly reach or exceed 150+ miles per charge when using low SPAS while always pedal assisting on flat ground under perfect conditions with a light weight rider.  The LCD also indicates Speed, Distance and Battery Life.

 The Boulderado 48 Volt Lithium Powered Electric Fat Tire Step-Through Mountain Bicycle is faster than any model we sell.  It has been tested climbing a 5-7% mountain grade continuously for 45 minutes at 18 mph while having to slow down for hair pin turns.

X-Treme Boulderado
Power Electric
Watts 500 Watts
Amps 10.4 AH Integrated Lithium Battery
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
Cargo Rack Included
Frame Type/Size 6061-T6 Temper Aluminum Alloy - Very Lightweight - Step-Through
Forks Oversized MOZO Hydraulic Front Forks
Suspension Front Hydraulic Suspension Included
Front Sprocket Aluminum Alloy Sprocket
Derailleur Shimano® 9-Speed Atlus Gears & Shifter
Seat & Post Aluminum Alloy Adjustable Seat Post & Velo Oversized 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
Bicycle Measurements Max Seat Height = 41.3" Inches / Min Seat Height = 33.5" Inches / Handle Bar Height = 43.3" Inches
Carton Size (L x W x H) 60 x 31 x 11
Bicycle In Box Weight 81.5 lbs
Bicycle Weight 70 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


  • 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.
Order shipment preparation takes 3 days. Once shipped orders usually takes 5-8 days to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.