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Facts
Summary of Reviews
We have read all expert and user reviews on the 79Bike Viper S. In summary, this is what cyclists think. Published Jul 28, 2026 by Reda Ashour.
10 reasons to buy
- The 79Bike Viper S comes with a front light, a taillight with brake activation, and fenders.
- Testers relish the strong low-end torque, fast initial acceleration, and smooth power delivery.
- Reviewers say the brakes provide reliable stopping power.
- In testing, the Viper S handles steep hills on and off-road.
- Reviewers enjoy how easy it is to maneuver and flick the bike around tight corners.
- The Fast Ace suspension fork works well, according to testers.
- Reviewers are impressed by how the Viper S powers through loose and rough off-road terrain.
- The knobby tires provide good traction in the grass and dirt.
- A secret “Tilt” mode can be unlocked for additional torque.
- The compact size makes the Viper S easier to transport and store.
10 reasons not to buy
- Experts wish for a longer seat to be able to slide back, especially for wheelies.
- Testers complain about the uncomfortable, firm, and slick seat.
- The Viper S's power, speed, and regen settings can't be tuned.
- An expert finds the brakes prone to fading.
- The Viper S has only two power modes. Reviewers say the lower mode's 10 to 15mph max with heavy regen braking means it's useless.
- Testers are disappointed that the bike tops out at around 26mph on flat ground.
- The rear shock bottoms out easily.
- The 165lb payload capacity is low compared to other electric dirt bikes.
- Reviewers complain the battery rattles and the motor is loud under heavy load.
- The product specifications are contradictory across 79Bike's multiple websites.
Bottom line
The 79Bike Viper S is a unique electric dirt bike with a seat that folds down to be ridden like a scooter. Its compact size and low payload capacity mean that this bike is really only suitable for teens. The Viper S earns praise for its high torque and agile handling that allow reviewers to wheelie, jump, ride through loose terrain, and tackle climbs easily. Unfortunately, it’s not very comfortable due to its hard, short seat and unconventional ergonomics. The absence of tuning options also disappoints. Overall, the Viper S's value is debated as much as its polarizing looks.Expert Reviews
79/100 based on 5 rated expert reviews79Bike Viper S: A Mini E-Dirt Bike That Rides Like a Scooter (In a Good Way)
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