Key features

Under 18 kg fully equipped: easy to carry upstairs or load into a car without effort
Bosch Performance Line SX motor (55 Nm) keeps a low profile inside a clean hydroformed aluminium frame with fully integrated cables
Mudguards, rear rack and lights included as standard — no extra purchases needed to start commuting
Bosch CompactTube 400 Wh battery integrates seamlessly into the frame and can be extended with a Bosch PowerMore 250 Wh range extender
Tektro HD-R285 hydraulic disc brakes and Shimano Cues 9-speed drivetrain deliver consistent, reliable performance in all conditions

Flyer Upstreet SL 3.10

A fully equipped commuter e-bike that barely feels electric — under 18 kg, ready to ride.

Available sizes

Select a size

4 199,00 €

Pay in 3× €1,399.67 at no extra cost with Alma

Or finance your bike

Renting individual140,43 €/month

Store availability

Liège · Out of stock Brussels · Out of stock

Free in-store pickup or €50.00 delivery

Delivered ready to ride

Easy returns within 14 days

2-year warranty on the motor

Secure payment

Description

The Flyer Upstreet SL 3.10 is a lightweight urban electric bike that proves a city e-bike doesn't need to be heavy to be effective. Powered by the Bosch Performance SX 55Nm — the most compact motor in the Bosch range — it weighs considerably less than most of its competitors while offering more than sufficient assistance for daily urban commuting.

Its 400Wh battery sits discreetly in the down tube, giving it the appearance of a classic bike with a sporty silhouette. The sporty geometry and refined finishing typical of Flyer make it a bike you're proud to carry upstairs and park outside the office. Components are selected for their reliability and lightness.

For active city dwellers who want an electric bike that doesn't turn stair-climbing into a chore, and who want to arrive at work looking good without breaking a sweat, the Flyer Upstreet SL 3.10 is the obvious answer: light, elegant, and fiercely effective.

Bosch Performance SX - 60 Nm

Lightness reinvented. The Bosch Performance Line SX is the motor that blurs the line between electric bike and muscle bike. With 60 Nm of torque and a featherweight, it is discreet where others are essential - for a driving experience that remains above all natural, agile and pleasant. Designed for the thinnest frames and sportiest geometries, the SX is aimed at cyclists who want the electric boost without sacrificing the lightness or feel of the traditional bike. The assistance is lively and precise, perfectly dosed to enhance your pedaling without ever replacing it.

Bosch Compacttube 400 Wh

Lightness above all. The Bosch CompactTube 400 Wh is the battery designed for bicycles where every gram counts. With 400 Wh of capacity in a deliberately compact format, it is aimed at cyclists who favor the agility and maneuverability of a light bike, without giving up electric assistance on a daily basis. Its reduced format allows discreet integration into thinner frames and sportier geometries - where a standard PowerTube could not find its place. Ideal for urban outings and short to medium distance journeys, it offers most of the autonomy in the most compact format in the Bosch range.

Other characteristics

Console

Pas d'écran - Système Remote Control

Transmission

Shimano Cues 4000, 9 versnellingen, 11-46t

Fork

FLYER Rigid Fork, 12 x 100 mm

Shifters

Shimano Cues

Gears

Shimano Cues 4000, 9 versnellingen, 11-46t

Brakes

Tektro HD-R285, 2 piston

Front brake size

180mm

Back brake size

160mm

Most ordered items with this bike

Abus
BORDO™ 6200K/120 SH black ART 2
The Abus BORDO 6200K/120 black folding lock combines an excellent level of security with convenient transport, with ART 2 certification and an Abus security level of 13 out of 15. Its hardened-steel bars with reinforced profiling and its X-Plus cylinder, made in Germany, resist manipulation attempts. At 120 cm long and weighing around 1.6 kg, it folds up compactly and offers two insertion positions in the lock body (transport and locking). The supplied holder features a storage compartment for the key and a slot for an AirTag to locate the lock. Ideal for securing bikes and electric bikes in the city. Colour: black.
159,95 €
In stock in the store
Tire velo
Système de traction V3
The Tire-Velo Traction System V3 lets an adult cyclist tow a child's bike using a 3-metre high-resistance elastic cord. The cord stretches to smooth out speed changes between the two riders, keeping the connection feeling natural and preventing sudden jerks that could cause a fall.
On the towing bike, two straps wrap around the seatpost (compatible with diameters from 25.4 mm to 31.8 mm) — no tools required. On the child's bike, a double hook clips onto the handlebars (stem width under 50 mm) and is simple enough for the child to attach themselves. Full setup takes under a minute.
The whole system weighs 280 g and packs away into a spring-loaded winding case that fits easily in a bag. The box includes the winding case, two seatpost straps, the 3 m elastic cord and the handlebar hook. Maximum recommended load: 90 kg (child's bike and rider combined).
Compatible with mountain bikes, children's bikes and leisure bikes
Designed and assembled in France
Version V3, 2024/2025
57,00 €
In stock in the store

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Contact us by phone at +32 4 290 71 21 or by email at info@kameobikes.com