X-Treme Boulderado 48V 500W 17Ah Hub Motor Fat Tire Step-Through Electric Mountain Bicycle - 100% Financing Available!
X-Treme Boulderado: The Rust-Proof Mountain Explorer
All-Aluminum Construction Meets High-Torque Climbing Power
The X-Treme Boulderado stands out in the electric mountain bike category with its 100% aluminum hardware—from the bolts and nuts to the spokes—ensuring a completely rust-proof experience. Its Bafang 500W motor utilizes a Zero Resistance Clutch, allowing you to pedal without motor drag if you choose. When powered, the King Meter Smart PAS system optimizes energy consumption, potentially doubling your efficiency and allowing for extreme long-distance travel.
Rugged Performance & High-End Components
-
Massive Range Potential: The upgraded 48V 17Ah integrated battery is significantly larger than standard packs, offering up to 150 miles of range when using low-level pedal assist on flat terrain.
-
Superior Climbing & Speed: Tested at 18 MPH on 7% mountain grades, this bike is built for the trail. On throttle alone, it reaches 25 MPH, and can exceed 45+ MPH with heavy pedal assistance.
-
Trail-Ready Comfort: Features oversized MOZO front hydraulic suspension and Kenda 26" x 4.0" fat tires, providing a stable, cushioned ride over rocks, sand, and mud.
-
Precision Drivetrain: Equipped with a 9-speed Shimano Altus shifting system, offering more gear range than the standard 7-speed setups found on most commuter e-bikes.
-
Premium Extras Included: Every Boulderado comes standard with a rear cargo rack, a handlebar-mounted beverage holder, and Tektro disc brakes for reliable stopping power.
100% Online Financing Available
Upgrade your commute today without the upfront cost. We offer 100% online financing with instant approval at checkout. Choose your X-treme bike and pay in easy monthly installments!
Full Technical Specifications
| Category | Detailed Specifications |
| Motor | 500W Bafang High Torque Zero Resistance Hub |
| Battery | 48V 17Ah LiPo4 Lithium (Integrated) |
| Range | Up to 150 Miles (using low SPAS) |
| Top Speed | 25 MPH (Throttle) / 45+ MPH (Pedal Assist) |
| Brakes | Tektro Disc Brakes (Front & Rear) |
| Tires | 26" x 4.0" Kenda Mountain Fat Tires |
| Gears | Shimano 9-Speed Altus |
| Suspension | MOZO Hydraulic Front Forks |
| Frame | 6061-T6 Aluminum Alloy (Step-Through) |
| Payload Capacity | 350 lbs |
| Weight | 70 lbs (Bike Weight) |
| Charging | Fast Charging (~3 Hours) |
Frequently Asked Questions
What makes the "LiPo4" battery different from standard e-bike batteries?
The LiPo4 (Lithium Iron Phosphate) chemistry used in the Boulderado is known for its lightweight profile and higher safety rating compared to traditional lithium-ion packs. It also provides a higher discharge rate, which is why this bike can maintain high speeds even when climbing steep mountain grades.
Why is the "All-Aluminum" construction important?
Standard bikes often use steel bolts, spokes, or nipples that can rust over time, especially in coastal or humid environments. The Boulderado uses aluminum for every nut, bolt, and spoke, meaning the bike is naturally resistant to corrosion, maintaining its structural integrity and aesthetic for years.
How does the "Smart Power Assist" (SPAS) work?
The King Meter SPAS allows you to select exactly how much power the motor consumes by choosing levels 1 through 5. By selecting a lower level on flat ground, the system operates nearly twice as efficiently as standard controllers, which is how the bike can reach such extreme ranges (up to 150 miles).
Is the step-through frame suitable for mountain biking?
Yes. While "Step-Through" frames are often associated with city bikes, the Boulderado uses a reinforced 6061-T6 aluminum alloy frame. This provides the durability needed for off-road trails while making it much easier to mount and dismount, which is a major benefit for riders with limited mobility or those carrying heavy gear on the rear rack.
Estimated shipping and delivery is 3-15 business days if the product is in stock.
X-Treme products come with a 1-year warranty against manufacturing defects. The X-Treme frame comes with a lifetime warranty. You can view the X-treme warranty by clicking here.
X-Treme has a 15-day return warranty. You can view the return details by clicking here.
Click here to view X-Treme's full electric bike collection
Click here to view our Electric Bike Buyer’s Guide.
Original: $1,349.00
-65%$1,349.00
$472.15Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
X-Treme Boulderado: The Rust-Proof Mountain Explorer
All-Aluminum Construction Meets High-Torque Climbing Power
The X-Treme Boulderado stands out in the electric mountain bike category with its 100% aluminum hardware—from the bolts and nuts to the spokes—ensuring a completely rust-proof experience. Its Bafang 500W motor utilizes a Zero Resistance Clutch, allowing you to pedal without motor drag if you choose. When powered, the King Meter Smart PAS system optimizes energy consumption, potentially doubling your efficiency and allowing for extreme long-distance travel.
Rugged Performance & High-End Components
-
Massive Range Potential: The upgraded 48V 17Ah integrated battery is significantly larger than standard packs, offering up to 150 miles of range when using low-level pedal assist on flat terrain.
-
Superior Climbing & Speed: Tested at 18 MPH on 7% mountain grades, this bike is built for the trail. On throttle alone, it reaches 25 MPH, and can exceed 45+ MPH with heavy pedal assistance.
-
Trail-Ready Comfort: Features oversized MOZO front hydraulic suspension and Kenda 26" x 4.0" fat tires, providing a stable, cushioned ride over rocks, sand, and mud.
-
Precision Drivetrain: Equipped with a 9-speed Shimano Altus shifting system, offering more gear range than the standard 7-speed setups found on most commuter e-bikes.
-
Premium Extras Included: Every Boulderado comes standard with a rear cargo rack, a handlebar-mounted beverage holder, and Tektro disc brakes for reliable stopping power.
100% Online Financing Available
Upgrade your commute today without the upfront cost. We offer 100% online financing with instant approval at checkout. Choose your X-treme bike and pay in easy monthly installments!
Full Technical Specifications
| Category | Detailed Specifications |
| Motor | 500W Bafang High Torque Zero Resistance Hub |
| Battery | 48V 17Ah LiPo4 Lithium (Integrated) |
| Range | Up to 150 Miles (using low SPAS) |
| Top Speed | 25 MPH (Throttle) / 45+ MPH (Pedal Assist) |
| Brakes | Tektro Disc Brakes (Front & Rear) |
| Tires | 26" x 4.0" Kenda Mountain Fat Tires |
| Gears | Shimano 9-Speed Altus |
| Suspension | MOZO Hydraulic Front Forks |
| Frame | 6061-T6 Aluminum Alloy (Step-Through) |
| Payload Capacity | 350 lbs |
| Weight | 70 lbs (Bike Weight) |
| Charging | Fast Charging (~3 Hours) |
Frequently Asked Questions
What makes the "LiPo4" battery different from standard e-bike batteries?
The LiPo4 (Lithium Iron Phosphate) chemistry used in the Boulderado is known for its lightweight profile and higher safety rating compared to traditional lithium-ion packs. It also provides a higher discharge rate, which is why this bike can maintain high speeds even when climbing steep mountain grades.
Why is the "All-Aluminum" construction important?
Standard bikes often use steel bolts, spokes, or nipples that can rust over time, especially in coastal or humid environments. The Boulderado uses aluminum for every nut, bolt, and spoke, meaning the bike is naturally resistant to corrosion, maintaining its structural integrity and aesthetic for years.
How does the "Smart Power Assist" (SPAS) work?
The King Meter SPAS allows you to select exactly how much power the motor consumes by choosing levels 1 through 5. By selecting a lower level on flat ground, the system operates nearly twice as efficiently as standard controllers, which is how the bike can reach such extreme ranges (up to 150 miles).
Is the step-through frame suitable for mountain biking?
Yes. While "Step-Through" frames are often associated with city bikes, the Boulderado uses a reinforced 6061-T6 aluminum alloy frame. This provides the durability needed for off-road trails while making it much easier to mount and dismount, which is a major benefit for riders with limited mobility or those carrying heavy gear on the rear rack.
Estimated shipping and delivery is 3-15 business days if the product is in stock.
X-Treme products come with a 1-year warranty against manufacturing defects. The X-Treme frame comes with a lifetime warranty. You can view the X-treme warranty by clicking here.
X-Treme has a 15-day return warranty. You can view the return details by clicking here.
Click here to view X-Treme's full electric bike collection
Click here to view our Electric Bike Buyer’s Guide.
