Vvolt Sirius eBike
Adding bigger tires and bump-taming front suspension to a powerful mid-drive motor and reliable internal gear hub, the Sirius takes our hassle-free philosophy to the trails!
Every Sirius now includes both 20mph "Class 1" and 26mph "Warp Core Upgrade" controllers.
smooth out those rough roads
Sirius Key Highlights
The little design choices that make this model stand out.
Off Road Capable
The Sirius' air sprung fork tames bumps and knobby tires maintain traction when the ride gets rough.
Smooth Shifting
With the Enviolo internal gear hub, just twist the shifter to find your perfect gear. There's no such thing as a "missed shift" with this step-less system that provides a wide gearing range. Unlike derailleur gears, you can shift anytime - while pedaling, coasting, or at a stop.
Stop with Confidence
Stopping duties are handled by powerful hydraulic brakes which self-adjust for consistent power as the pads wear. We specify brakes with mineral oil as it lasts longer between service and is less toxic for our world.
Every component, carefully chosen
No heavy batteries, overpowered motors, or clunky profiles. The Sirius was designed to perfectly balance performance, value, and looks.
Belt Driven
Goodbye traditional chains.
- Lasts 3x longer than a chain!
- No grease, no grime.
- Doesn't stretch over time.
- Whisper quiet and smooth as silk.
- Maintenance free!
Hello Belts!
375Wh Removal Battery
The battery is easily detachable from the bike with the twist of a key. Charge the battery from anywhere and leave the bike behind!
Hydraulic Disc Brakes
The Sirius comes with hydraulic disc brakes with 160mm rotors to ensure maximum stopping confidence on the road.
Mounting Points
The Sirius comes fitted with cleverly thought-out mounting points for maximum versatility. Racks, fenders, baskets, boombox? No problem.
Specifications
Feature | Description |
---|---|
Enviolo Hub | Way better than derailleur gearing, the Enviolo TK continuously variable transmission hub features a 380% range and never needs adjustment. |
MPF 6C Motor | Strong and silent MPF mid-drive motor with all-metal gearing in an oil lube bath. It has 350-watt nominal power and 650-watt peak output. |
Mid-Motor Battery | Standard 375Wh battery provides 15 to 40 miles of range depending on terrain, assist level, and other factors. Optional upgraded 500Wh battery available. |
Class 1 / Class 3 Controller | Configurable with Class 1 (motor assistance up to 20 mph) or Class 3 (motor assistance up to 26 mph) controller. |
Suspension Fork | Sirius features air-sprung fork with 100mm of tunable travel and a compression/lockout adjuster. 1 1/8" straight steerer and 15 x 100mm thru-axle. |
Brakes | Hydraulic brakes paired with 160mm rotors provide ample stopping power. |
Gates Belt Drive | Carbon reinforced belts from Gates® last longer than chains, operate quietly, and don't require greasing. No more unintentional chainring tattoos! |
Tires | 27.5" x 2.1" tires with knobby tread to take on some mild off-road riding. |
Full component specifications for our fellow nerds. Find the full component specsheet here.
Size Chart
Find your perfect fit
We recommend you compare your inseam measurement, taken wearing shoes you are likely to ride in, to the stand-over height of our various models. As long as you've got around 1" of clearance over the top tube you'll likely be good to go! If you're on the cusp between sizes we generally recommend sizing up!