Ten Years of the Bike You Love to Hate. Now Better Than Ever.

The AssaultBike Pro X is the ultimate evolution of the world's most demanding cardio machine. Built to celebrate a decade of the original AssaultBike, the Pro X takes everything athletes loved about the Classic and Elite models and pushes it further — whisper-quiet operation, deeper customization, and a training experience that is 100% athlete-powered. You control the resistance. You control the intensity. You control the outcome.

100% Athlete-Powered — Unlimited Resistance

There are no motors, no preset resistance levels, and no limits. The AssaultBike Pro X automatically increases resistance as you increase speed — meaning the harder you push, the harder it pushes back. Sprint intervals, steady-state cardio, or all-out max efforts — the Pro X matches your intensity every time.

2-Stage Belt Drive — Whisper Quiet, Maximum Power

The hydraulically pressed ISIS-drive connection with a first-stage cogged belt and second-stage poly-v belt delivers smooth, powerful, near-silent operation. Maximum power transfer, minimal maintenance, and a ride quality that lets you focus entirely on your training.

High Contrast LCD — Every Metric, At a Glance

The upgraded high-contrast LCD screen tracks Watts, RPM, Calories, Heart Rate, Distance, Time, and Speed with improved readability — so you always know exactly where you stand, mid-sprint or mid-grind.

HIIT Programs & Competition Mode

Built-in High Intensity Interval Training programs and a dedicated Competition Mode setting let you structure your sessions for maximum results — whether you're chasing a benchmark, running a class, or competing against yourself.

Fully Adjustable — Built for Every Athlete

11 seat height settings and 6 front-to-back adjustments ensure a perfect fit for athletes of all sizes. The wide padded seat and steel seat post keep you comfortable and locked in proper form through every session.

Bluetooth & ANT+ Connectivity

Connects seamlessly to the Assault Fitness App via Bluetooth and ANT+ — track your performance, log your sessions, and push your limits with data-driven training.

Specifications

• Drive System: 2-stage belt drive (cogged + poly-v)
• Fan: 27" diameter steel
• Bottom Bracket: Commercially sealed cartridge
• Connectivity: Bluetooth & ANT+
• Seat Adjustments: 11 height / 6 front-to-back
• Max User Weight: 330 lbs
• Design: All-metal

Dimensions

• Assembled: 51.73"L x 24.52"W x 52.51"H | 125 lbs
• Boxed: 53.5"L x 11.0"W x 34.6"H | 140 lbs