We approve suspension seat posts for the i:SY SKYFLY. It is important that the minimum insertion depth is maintained, i.e. the lower value specified for the two components – frame and seat post – applies here. Our SKYFLY frame requires a minimum seat post insertion depth of 75 mm.

The i:SY SKYFLY S10 can be retrofitted with a frame lock. Please contact your i:SY dealer for more information.

With the UD Carbon frame colour, the material – carbon – is clearly visible. The carbon fibres form a unique pattern, as each frame is handmade. Every model looks different. The pure carbon design is simply fixed with a transparent, slightly blackened lacquer. This ensures that the material structure remains clearly visible.

If you want to transport your i:SY SKYFLY on a bike rack, please note the following: Remove the battery, display (if not fixed) and all accessories, fold in the pedals and protect them with transport protection.

ATTENTION: The i:SY SKYFLY model must NOT be clamped on the frame! It can be attached to the bike rack by clamping the seat post, the handlebars or by using a bicycle frame adapter. 

Child seats can be retrofitted to the luggage rack of i:SY SKYFLY models with frame numbers starting with CC40800001.

All our baskets and bags which have the MonkeyLoad-T plate are equipped with a lock. A separate anti-theft device is available for retrofitting our waterproof luggage rack bags with the MonkeyLoad-S system: MonkeyLoad-S lock.

This is due to the system connection. The MonkeyLoad-T plate is approved for a maximum of 10 kg. The weight of the basket itself must then be deducted from this.

The i:SY luggage rack has a maximum weight capacity of 27 kilograms.

In many cases, yes. Our KLICKfix front carrier, for example, is compatible with all bags or baskets with a KLICKfix plate, Basil KF or MonkeyLoad adapter plate. With the help of the MonkeyLoad-T plate, luggage rack baskets or boxes can be made compatible with the i:SY ML ready luggage rack. 

The i:SY has the wheelbase of a normal 28-inch bike and the rear triangle is correspondingly long. This means you can easily attach large bags, such as the i:SY pannier bags or similar models. These are also far enough off the ground!

The i:SY LowRider is designed to carry a maximum load of 4 kilograms per side. Objectively speaking, this is much more than it sounds like.

We recommend replacing a bicycle helmet approximately 4 to 5 years after first use. However, a helmet should be replaced no later than 8 years after the date of manufacture. This is a recommendation from our partner ABUS. This information can also be found in the instructions enclosed with the helmet.
The date of manufacture of our HUD-Y by i:SY is 12/2022.

This depends on several factors. Starting with the weight of the rider, the selected assistance level and the chosen route. Whether the terrain is flat or mountainous makes a huge difference. Wind is also a factor.
Tip: Use the consumption indicator and the gear shift recommendations on the display. This will increase your range.

The batteries installed by i:SY are of very high quality. This is noticeable right from the start. Low weight, high-quality cells, low self-discharge, fast charging times and long service life. We assume that, with normal use, a battery will serve you well for five years. After that, it will still be a good spare battery.

This depends on the battery capacity and which charger you use. We have created a small overview for this. You can also perform partial charges at any time. This does not damage the battery.

i:SY models with BOSCH:

TIP: Be sure to take the charger with you on longer day trips. It is worth recharging the battery during your lunch break or a longer coffee break.

Yes, there is a socket on the left side of the battery in the direction of travel to which the charger can be connected.

From model year 2023 onwards, the 545 Wh battery can be replaced with the 800 Wh battery from BOSCH. Your i:SY dealer can obtain this directly from BOSCH. Retrofitting requires a modification. Our i:SY dealers have all relevant information. 

The computer ‘remembers’ your riding style and considers the distances you have travelled so far and your selected assistance level when calculating the range.

Different riders have different riding styles and consume different amounts of power. With the BOSCH range calculator, you can use your individual parameters to calculate how far you can travel on one battery charge.

• i:SY before model year 2022:

The luggage rack installed here is not approved for use with a child seat. 
The child seat-compatible i:SY luggage rack ML, can be retrofitted. 

• i:SY from model year 2022 onwards:

The luggage rack installed here is approved for use with a child seat and is authorised for 27 kg.

In both scenarios, please note that the luggage rack has a width of 110 mm. Not all child seats are suitable for this size. We recommend the Thule Yepp 2 Maxi Rack Mount.

• Exceptions and deviations from model year 2024 onwards: 

We do NOT approve the i:SY SKYFLY S10 and i:SY SKYFLY E5 for use with a child seat. 
On the i:SY P12 models (COMPACT, XXL and CARGO), we install a luggage rack with a width of 120 mm. All standard child seats for luggage rack mounting are suitable here. 

• Important when using a suspension seat post: 

The seat post naturally springs and children's fingers can get caught in it. Appropriate protective covers are available separately for all common suspension seat posts. We strongly recommend retrofitting these. 

• The i:SY SPEED models are NOT approved for use with a child seat.

The permissible trailer load is 60 kg.
Note: Combining it with our i:SY CARGO models is not permitted.

For safe transport, the battery, display (if not fixed) and all accessories must be removed from the front and luggage racks. Turn the handlebars sideways, fold in the folding pedals and protect them with the transport protection. You can clamp your i:SY it on the seat tube, the middle tube or the main tube. If you clamp your i:SY to the main tube, please use our neoprene protection – also included in the transport protection set – to avoid damaging the frame decoration.

All bike racks are suitable for transporting an i:SY model. You just need to make sure that the size of the wheel rails fits our balloon tyres.
We have had good experiences with the following bike racks: Uebler i21, Thule Velospace XT 2 and XT 3.

To protect the motor from stone damage when transporting the i:SY on a rear carrier, for example, we offer a protective neoprene cover. Caution! The protective cover must be removed before using the i:SY. Risk of falling!

We also offer a neoprene protective cover for Bosch 400, 500 and 545 Wh batteries. This can remain in place while riding and protects the battery from stone damage. At low temperatures, the neoprene material extends the battery life. The protective cover must be removed when charging.  

We consider BOSCH motors to be an excellent choice, even in the long term. It is a German company with a long tradition and an outstanding organisational structure. 

Manufacturers and dealers receive ongoing training and excellent support. Every i:SY dealer can install the latest motor updates, and the BOSCH diagnostic software provides information about the functionality of the entire system during every inspection. In addition, the BOSCH system is very widespread, and virtually every pedelec dealer in Europe is familiar with it.

No. The pulleys and toothed belts are designed for specific models.

i:SY does not offer a retrofit kit for suspension forks. If you would like to ride an i:SY with a suspension fork, we offer the i:SY Adventure models.
In principle, a suspension fork can be fitted. However, this is very costly. In addition to the suspension fork, the retrofitting requires a new wheel, new stem, handlebars, display holder, new brake lines and other accessories. Unfortunately, we are unable to offer these components in an attractive package.

Yes, this is possible. However, the maximum insertion value must be observed. Specifically, this means: The value for the frame is 75 mm. The value for the seat post is 120 mm. Therefore, the 120 mm must be observed. It is best to contact your trusted i:SY dealer for installation. 

Yes, your i:SY dealer can easily retrofit an anti-theft device for models from 2023 onwards. Our i:SY P12 and i:SY SKYFLY models are already equipped with an anti-theft device ex works.

Use a damp microfibre cloth, a cotton cloth or a fine brush in combination with a special Alcantara cleaner. Clean the attachments with light pressure and circular movements and then dab them with a damp cloth. 
For better protection, the attachments can also be impregnated as a preventive measure.

Yes, that is possible. Especially if you have been riding your i:SY on the coast and it has come into contact with salt water or road salt in winter. All the fastening screws we use are made of V2A stainless steel as far as possible. However, salt water and sea air are so aggressive that even stainless-steel screws of this quality can develop flash rust. We recommend that you rinse the vehicle with warm water to wash off the salt. The brake discs and some screws are made of steel by the manufacturer and are very sensitive to salt. Brake discs can be cleaned with hot water or, better still, with brake disc cleaner. It is best to dry damp parts with a cloth.
If screws on your i:SY have rusted, this does not usually affect its function. If you are unsure, simply visit your i:SY dealer. 

Yes, but the following points must be considered: Approval of the indicator, compliance with the Road Traffic Licensing Regulations (StVZO) and performance requirements. As the installation is somewhat extensive, we recommend getting it done by your i:SY dealer.