i:SY

i:SY XXL N3.8 ZR

i:SY XXL N3.8 ZR – A Timeless Classic, Now in XXL!

The i:SY XXL N3.8 ZR brings the beloved i:SY riding experience to taller cyclists (up to 210 cm) with a reinforced frame for a higher load capacity (180 kg).

Key Features:

  • Continuously variable ENVIOLO 380 hub gearing for smooth shifting

  • Low-maintenance GATES® CDX CenterTrack belt drive for durability

  • Powerful BOSCH Performance Line motor (75 Nm) with BOSCH Smart System

  • eBike Flow app connectivity for full digital integration

  • Speedlifter Twist handlebar adjustable in height and 90° rotation for easy storage

  • Foldable pedals for compact convenience

  • i:SY front luggage rack & quick-release frame lock

Perfect for daily commuting, long-distance rides, and hilly terrain, the XXL N3.8 ZR offers seamless power and comfortable cycling for all riders.

Price
€4.799,00 EUR
€4.799,00 EUR
Battery
Color
Available 1 Items in Stock
14 Days Return Policy
i:SY XXL N3.8 ZR
  • Overview
  • Specifications

Ride it! Love it!

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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Product Specifications

i:SY XXL N3.8 ZR – 2025 Model
Performance & Motor
Motor: Bosch Performance Line 25/75Nm

Manufacturer: Bosch

Assistance: Up to 25 km/h

Battery: Bosch PowerPack 545 (545 Wh)

Display: Bosch Intuvia 100

Frame & Components
Frame: Original i:SY XXL Unisex

Material: Aluminium

Fork: Original i:SY Starrgabel

Gearing & Braking System
Gearing: Continuously variable hub transmission

Shifter: ENVIOLO Twist Display Pro

Crankset: i:SY E-bike crank

Cassette: 22T

Brakes: Hydraulic disc brakes

Front: TEKTRO HD-T532 (4 pistons)

Rear: TEKTRO HD-T532 (2 pistons)

Brake Discs: 180 mm (front), 160 mm (rear)

Brake Levers: 3-finger

Wheels & Tires
Front & Rear Rims: RYDE Andra 40 Disc, 32H

Front Hub: Shimano Deore HB-M5100

Rear Hub: ENVIOLO HD, 6-bolt

Spokes: 32x Niro 2.0 mm

Tires: SCHWALBE Pick Up, Super Defense

Tire Size: 20 x 2.35 inch (ETRTO: 60-406)

Handlebar & Saddle
Handlebar: i:SY 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 1.0 integrated

Additional Features
Pedals: i:SY anti-slip folding pedals

Lights:

Front: FUXON FF-100EB (100 Lux LED high beam)

Rear: FUXON R-Glow S LED rear light

Kickstand: PLETSCHER Kickstand Comp40 Flex

Mudguards: SKS Bluemels (20-inch, width 65 mm)

Luggage Rack: i:SY Bagagedrager, MonkeyLoad-ready

Chain Guard: HORN Catena

Locks: Abus i:SY-Set, battery & frame lock (BLO BOS DT3 + 4750SL NR)

Technical Specs
Wheel Size: 20 Inch

Frame Height: 51 cm

Colors Available: Opal Green, Berry Red, Happy Orange, Pepper Black, Cosmos Blue

Maximum Load Capacity: 180 kg

Bike Weight: 26.2 kg

Charger: Bosch 4 Ah

i:SY XXL E5 ZR F CX – Built for Power & Performance!

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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.