X-LAB ST5+ Electric Bike at Bike Attack Electric Santa Monica

Available in Mercury and Nightfall Black

Premium Mid-Drive Performance for the Modern Urban Rider

The X-LAB ST5+ at Bike Attack is a next-generation electric bike engineered for riders who demand exceptional performance, advanced technology, and everyday versatility. Designed to excel in urban environments while remaining capable of handling longer recreational rides, the ST5+ combines sophisticated engineering, premium components, and intelligent connectivity into one refined package.

Built around the lightweight and durable XDS X6 aluminum frame, the ST5+ delivers a balanced riding position that feels comfortable during daily commutes while maintaining the efficiency and responsiveness experienced riders appreciate. Whether you're navigating city streets, climbing steep hills, or exploring bike paths on the weekend, the ST5+ offers a smooth, powerful, and confidence-inspiring ride.

At the core of the bike is X-LAB's proprietary X800 mid-drive motor, delivering an impressive 95Nm of peak torque. Unlike traditional hub motors, the mid-drive design provides superior weight distribution, enhanced climbing ability, and a more natural riding feel. The advanced dual-sided torque sensor continuously measures rider input and delivers smooth, intuitive assistance exactly when needed, creating an experience that feels remarkably similar to riding a traditional bicycle—only stronger, faster, and more efficient.

The powerful motor is paired with a high-capacity 619Wh integrated battery featuring premium LG cells. This advanced battery system provides an impressive range of up to 75 miles per charge, making the ST5+ ideal for commuters, fitness riders, and weekend adventurers alike. Charging is quick and convenient, reaching full capacity in approximately five hours with the included charger.

Out of the box, the ST5+ operates as a Class 2 electric bicycle, offering both pedal assist and throttle operation up to 20 mph. Riders looking for additional speed can easily unlock Class 3 functionality through the X-LAB Bikes mobile app, allowing higher assisted speeds where local regulations permit.

Smooth, Comfortable Ride Quality

Urban riding often means dealing with rough pavement, potholes, expansion joints, and uneven road surfaces. To maximize rider comfort, the ST5+ features an XDS suspension fork with 80mm of travel and a robust 15mm thru-axle design. This setup effectively absorbs road vibrations and impacts, reducing rider fatigue while improving control and handling.

The bike rolls on durable Branta alloy e-bike wheels paired with wide 27.5" x 2.4" CST tires featuring reflective sidewalls for increased visibility. The generous tire volume improves traction, stability, and comfort while providing confidence on a variety of surfaces.

Reliable Shimano Cues Drivetrain

The ST5+ is equipped with Shimano's highly regarded Cues 9-speed drivetrain, designed specifically for the demands of modern e-bikes. The Shimano RD-U4000 rear derailleur works seamlessly with the wide-range 11-46T cassette, giving riders plenty of gearing options for steep climbs, fast flats, and everything in between.

Combined with the responsive mid-drive motor, the drivetrain provides excellent efficiency and smooth shifting performance regardless of terrain.

Powerful Four-Piston Hydraulic Braking

When riding at higher speeds or carrying cargo, dependable braking performance becomes essential. The ST5+ is equipped with Branta EC4D four-piston hydraulic disc brakes, providing exceptional stopping power and modulation in all weather conditions.

Large 180mm rotors front and rear ensure consistent braking performance while helping dissipate heat during extended descents. Integrated e-bike cutoff switches instantly disengage motor assistance when braking, enhancing rider safety and control.

Smart Technology & Integrated Features

The X-LAB ST5+ is packed with modern technology designed to enhance convenience, security, and connectivity.

The sleek integrated cockpit combines the handlebar, stem, display, and front lighting system into one streamlined unit for a clean, premium appearance. Riders can monitor speed, battery level, ride modes, and system information through the integrated display while maintaining an uncluttered cockpit.

Additional smart features include:

• Apple Find My compatibility for enhanced theft protection
• Bluetooth connectivity
• Over-the-air firmware updates
• Integrated front and rear lighting system
• Brake light functionality for increased visibility
• Quad Lock smartphone mount
• MIK-HD rear cargo rack
• Mobile app integration

Built for Everyday Utility

Designed with practicality in mind, the ST5+ can accommodate riders and cargo with a total load capacity of up to 330 lbs (150kg). The included MIK-HD rear rack allows easy installation of compatible bags, baskets, and cargo accessories, making the bike ideal for commuting, grocery runs, or daily transportation.

Despite its impressive capability, the ST5+ maintains a manageable weight of just 54.58 lbs (24.76kg), helping preserve agile handling and maneuverability.

Safety and Industry-Leading Certifications

The X-LAB ST5+ is engineered to meet rigorous safety and reliability standards. The battery system is UL2271 certified, while the complete electrical system is UL2849 certified. The battery carries an IPX7 waterproof rating, and the complete bicycle achieves an IP54 rating, ensuring dependable operation in varying weather conditions.

Key Features

• XDS X6 Alloy Frame with UDH Compatibility
• X-LAB X800 Mid-Drive Motor
• 95Nm Peak Torque
• 619Wh LG Cell Integrated Battery
• Up to 75 Miles of Range
• Class 2 Operation with Class 3 Unlock Capability
• Shimano Cues 9-Speed Drivetrain
• Four-Piston Hydraulic Disc Brakes
• 80mm Suspension Fork
• Apple Find My Integration
• Bluetooth Connectivity & OTA Updates
• Integrated Front & Rear Lighting System
• MIK-HD Cargo Rack Included
• 330 lb Total Load Capacity
• UL2271 & UL2849 Certified

Specifications and components are subject to change without notice.