i:SY

i:SY SKYFLY E5 ZR F

Featherlight Performance! The carbon SKYFLY E5 redefines lightweight power, delivering a quiet, effortless ride through everyday life.

Introducing the lightest i:SY ever, the groundbreaking i:SY SKYFLY with a sleek carbon frame. Its innovative, inwardly flattened round tube gives it a fresh, modern look while staying true to the iconic i:SY DNA. Designed for agility, it features a seamlessly integrated quick-release system for instant seat height adjustments. Weighing in at under 20 kg, tackling city streets and inclines has never been easier.

  • Ultra-light carbon frame
  • Whisper-quiet BOSCH Performance Line SX motor (55 Nm)
  • Frame-integrated quick-release for instant adjustments

Light, stylish, and packed with power, the i:SY SKYFLY is your perfect urban companion!

Price
Regular price
€5.599,00 EUR
Sale price
€5.599,00 EUR
Regular price
Shipping calculated at checkout.
Couleur
Battery
Available 1 Items in Stock
14 Days Return Policy
i:SY SKYFLY E5 ZR F

The i:SY principles

ONE SIZE FITS ALL

The iconic one-size frame with its award-winning unisex design makes the i:SY unique. Its adjustable height and length ensure optimal power delivery in a comfortable upright position, making every ride efficient and enjoyable for cyclists of all sizes and needs.

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RIDE IT

Thanks to its compact 20" design, the i:SY is both resilient and practical. The modified transmission delivers a smooth ride, making it feel as powerful and dynamic as a larger bike while maintaining the agility and convenience of a compact urban commuter.

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LOVE IT

A low center of gravity and wide 20" balloon tires provide outstanding stability. The i:SY offers exceptional safety, remarkable riding characteristics, and an unmatched cycling experience, giving riders confidence and control in any urban setting.

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Very cool features

Product Specifications

Product Details

Model Year: 2025

Motor: Bosch Performance Line SX 25/55Nm

Motor Manufacturer: Bosch

Motor Assistance: Up to 25 km/h

Battery: Bosch PowerPack 545

Battery Capacity: 545 Wh

Display: Bosch Kiox 500 with Mini Remote

Frame Specification: Original i:SY Kompakt 2.0 Carbon unisex

Frame Material: Carbon

Fork: Original i:SY Carbon rigid fork

Number of Gears: 5-speed

Gear Type: Hub gear

Shifter: SHIMANO Nexus Revo Shifter

Crankset: i:SY E-bike crank

Cassette: 34T

Brake Type: Hydraulic disc brake

Front Brake: TEKTRO HD-T532, hydraulic disc brake with 4 pistons

Rear Brake: TEKTRO HD-T532, hydraulic disc brake with 2 pistons

Brake Lever: 3-finger brake lever

Rear Brake Lever: 3-finger brake lever

Brake Disc (Front): 180 mm

Brake Disc (Rear): 180 mm

Rim: Ryde Disc30

Rear Rim: Ryde Disc30

Front Hub: Shimano Deore HB-M5100

Rear Hub: Shimano Inter-5E, SG-C7000-5D

Spokes: 32x Niro 2.0 mm

Tires: SCHWALBE Super MotoX, foldable

Tire Size (inch): 20 x 2.40

Tire Size (ETRTO): 62-406

Handlebar: i:SY handlebar 30°

Grips: ERGON GC10 ergonomic grips

Stem: i:SY stem 70mm

Headset: i:SY Steuersatz

Saddle: ZECURE, Hydro Foam, size L

Seatpost: i:SY seatpost, 415 mm, ⌀ 34.9 mm

Seat Clamp: i:SY 2.0 quick release integrated

Pedals: i:SY anti-slip folding pedal

Front Light: FUXON FF-100EB, 100 Lux LED with high beam

Rear Light: FUXON RL 130 EB BL, with brake light

Kickstand: PLETSCHER Kickstand Comp40 Flex

Mudguards: i:SY mudguard 20 inch, width 70mm

Luggage Rack: i:SY luggage rack 2.0, ready for MonkeyLoad

Chain Guard: i:SY chain protector

Locks: Abus battery lock BLO BOS DT3 XPLUS

Wheel Size: 20 inch

Frame Height: 47 cm

Color: UD Carbon, Star Dust Carbon, Light Green

Maximum Total Weight: 150 kg

Weight: 18.8 kg

Charger: Bosch 4 Ah charger
real life

A day riding with the i:SY SKYFLY E5 ZR

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reviews

Our happy clients

5/5

Pro and super friendly. Love the bikes!

Charles
5/5

This bike has been perfect for our 2 year old twin grand sons. It is just perfect for them to ride!

Tonya
5/5

The quality is outstanding and it was easy to put together. I love the look!

Kim
FAQ

Any questions on our bikes? We're here to help!

The i:SY has a single-size frame. The perfectly conceived frame geometry makes it possible. The frame is adjustable in length when people between 150 and 190 cm tall sit on it. Thanks to the flat seat angle and the comparatively “long” top tube this is possible. For people up to 210 cm our XXL models are ideal
All bags and baskets that are delivered incl. a MonkeyLoad-T plate are also fitted with a lock. For our waterproof trunk bags that are fitted with the MonkeyLoad-S system we offer a separate anti-theft. MonkeyLoad-S lock, Art.No. 5020319. 
It is possible in most cases. Our i:SY Front carrier with KLICKfix is compatible with all bags and baskets that have a KLICKfix plate, a BASIL KF or a MonkeyLoad adapter plate. For baskets or crates for the rear carrier we offer the MonkeyLoad-T plate. They can thus be fitted onto the i:SY rear carrier ML ready.
Bosch batteries are of very high quality. That's something you'll notice right from the outset. Low weight, high-quality cells, no self-discharge, fast charging times and a long service life. Assuming normal usage, a rechargeable battery is expected to perform well for a period of five years. After that, it is still a good secondary battery.