2025 Aventon

Sinch 2

The Sinch 2.5’s 500W rear-hub motor (peaking 1,056W) dishes out a steady 60 Nm of torque, plenty of power for cruising town or tackling average climbs without breaking a sweat. Pair that with a torque sensor that keeps the assist smooth and natural, and you’ve got a ride that feels dialed in, not some jerky on-off switch like cheaper rigs.

Those 20x4-inch Innova tires roll quiet and plush, soaking up road chatter with a wide stance that steadies you through turns or bumps. The sipping tread’s a subtle win for wet days, giving you grip without turning it into a knobby off-road beast—perfect for commuters who want versatility.

Hydraulic disc brakes with 180mm rotors are the big spec bump here, delivering crisp, confident stops that outclass the old mechanical setup. It’s the kind of braking grunt that makes a difference when you’re hauling gear on the included rear rack or dodging traffic.

The folding alloy frame collapses quick into a tight package (41in x 24in x 29in), ideal for our RV friends or anyone short on space, while still handling a 300-pound payload. Add the step-through design and adjustable stem, and it’s built to fit most riders from 4’11” to 6’2” with a relaxed, upright perch.

The bike is powerful! Pedaling is fun and easy thanks to its 500W rear hub motor and highly responsive torque sensor.

It rides comfortably with 20×4” fat tires, a 50-mm-travel suspension seatpost, and an adjustable coil suspension fork.

The bike’s 4” fat tires and overall weight of 72.5 lbs help it feel sturdy and stuck to the ground.

We’re a fan of Aventon’s integrated tech, which includes brake lights, turn signals, and Bluetooth connectivity.

The Aventon app includes useful features such as ride data tracking, syncing with apps like Strava and Apple Health, maintenance tracking, speed adjustment, and more.

While the bike’s tires are best for paved surfaces, their tread is grippy enough for quick jaunts across dirt or gravel.

We’re happy to see the Sinch finally adopt hydraulic disc brakes; previous versions used mechanical disc brakes.

Three of the Sinch 2.5’s four assist levels felt identical in our testing; we encourage Aventon to redistribute the bike’s power levels for greater differentiation.

Riders on the tall end of the bike’s height range won’t likely have full leg extension. We recommend that Aventon include a longer 350mm seatpost to better accommodate taller riders.

Good looks

Very smooth ride

Frame-integrated battery

Streamlined design

Excellent range

Comes fully assembled

Heavy

Less compact when folded

Limited features