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Take on anything with the new Defiant Fat Tire Folding Electric Bike. This bike is designed to tackle snow, mud, sand, or anything else that stands in your way. Don't just ride a trail, dominate it. NYC consumers please review fire safety into available here: https://www.nyc.gov/site/fdny/codes/reference/lithium-ion-battery-safety.page

Take on anything with the new Defiant Fat Tire Folding Electric Bike. This bike is designed to tackle snow, mud, sand, or anything else that stands in your way. Don't just ride a trail, dominate it. NYC consumers please review fire safety into available here: https://www.nyc.gov/site/fdny/codes/reference/lithium-ion-battery-safety.page

The XPeak2 is a newly upgraded version of the trail-ready, all-terrain eBike. Tested to the most aggressive safety standards for off-road eBikes (eMTB), and named by Men's Health as a "Best of Sweat" winner in the 2025 Tech Awards, the XPeak2 now comes standard with an industry-leading torque sensor that provides an exceptional riding experience with intuitive and controlled power delivery at each pedal stroke. Combined with the 750-watt Stealth M24 motor (1310 Peak) for a powerful yet hushed motor experience, the XPeak2 delivers the muscle and speed to take on any terrain as a Class 1, 2, or 3 eBike. Additional upgrades include a newly designed hydroformed frame, a larger 203mm front disc brake rotor for maximum stopping power, an integrated color display, lock-on grips, and an 8-speed Shimano drivetrain.

The upgraded version, Mars 2.0, has been redesigned to offer what customers' evolving demands include such as increased motor power, longer battery life and shorter charging time, spring shock absorber and even easier foldability. The Mars 2.0 also provides users with the amount of traction needed to take on corners at a faster speed without any risk of slipping or sliding. This folding all-terrain e-Bike is built for adventure, with 20-inch x 4-inch fat tires, improving shock absorption, giving better stability, and suspension off-road. It is also lightweight - making it perfect for carrying upstairs or throwing it into the back of your car or truck to take on vacation with you. Besides these, it also comes with a new DIY Pegboard at the back seat that allows you to decide what and how to carry on your ride. The upgraded Mars 2.0 can travel up to 28 mph, getting you to where you need to be quicker, but without sacrificing safety. Traveling up to 45 miles per charge (PAS mode)72.5km on a single charge, . the removable 48V/12w.5A battery comes with a 54.6V/2A charger. It gives you full power in less than 6 hours. The Mars 2.0 also offers mechanical brakes and pedal assistance 0-5. For a folding e-Bike, the Mars 2.0 has a slimmer frame (75lbs) that can fit comfortably in your trunk or be taken on the bus or train if you're commuting. Its 15 inch high step through frame is great for riders from 5'5" to 6'3". Other notable features include an LCD display, alloy wheels and 20 inch x 4 inch fat tires. The Mars 2.0 e-Bike by Heybike features front and rear lights, making them safer to ride in the early morning and later in the evening. This e-Bike also comes with front and rear fenders, to keep your clothes clean.

Built to go where other e-bikes can't. Even when you aren't riding this e-bike you can take it where others can't go thanks to its easy foldability. Durable, shock absorbing off-road fat-tires can take on any sort of bike path or trail you can think of. Be sure to make use of the rear storage rack so you can take more than what's in your backpack.
| Pros for Jupiter Bikes - Defiant All Terrain Fat Tire eBike with Peak 1130W Motor and 40+ Miles Max Range - USA Service and Support - White | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Ease of Use | Speed, Build Quality, Portability, Operating Range, Comfort | Speed, Overall Performance, Ride Quality, Battery Life, Folding |
| Cons for Jupiter Bikes - Defiant All Terrain Fat Tire eBike with Peak 1130W Motor and 40+ Miles Max Range - USA Service and Support - White | |||
| There were no cons for this product— | Speed | Weight, Battery Life, Brakes | Weight, Noise Level, Range |
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
This is a great E-Bike. Very good acceleration. Fun and powerful. It folds easily and was easy to assemble using just a 3 minute video. I'm very satisfied and highly recommend.
Posted by PaulN