Best I Sy Bikes 2025

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Last Updated - 09/06/2025

Best Choice

01

Kattfix

Kattfix E-Bike Battery Lock for i:SY Bicycles, E-Bike Battery Anti-Theft Device (Battery Capacity 500 Wh)

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9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Secure hold on the frame
Secure e-bike battery theft protection for the compact bike i:SY
Safe yet lightweight: weighs less than 300 g
SUSTAINABLE & REPAIRABLE: made recyclable
Includes 2 keys for opening the lock
From domestic production: Made in Münster
Easy to install: quick and easy to install
Durable: made of hardened stainless steel
Available on request for other e-bike models
Available for many other models on request

199,90 €
Value for Money

02

ISE

ISE X-Bike Fitness Bike for Home Exercise Bike Bicycle Foldable X-Bike Adjustable Magnetron Resistance Levels with Hand Pulse Sensors, White, SY-810L

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

ISE is founded in 2010, since 2019 with a German warehouse; a good and friendly customer service, a technical team for advice. ISE is open to all suggestions, you can return to us within 30 days of purchase of the goods but return the returns only because of the product quality. We only take back returns in original packaging.
ISE X-Bike: The folding exercise bike has the features of fully foldable and upright. Unlike the conventional X-bike, our X-bike has magnetic resistance, and there is almost no noise during training. The driving experience is more comfortable, the resistance setting is stronger and you get double the result with half effort.
Dimensions and details: unfolded: (L x W x H) 59 x 41 x 114 cm, folded (L x W x H): 38 x 41 x 130 cm; product weight: 15 kg; maximum user weight: 100 kg. It is recommended to use our X-bike for people with a height below 175 cm. The fitness bike is suitable for training at all ages. ISE SY-810L X-bike exercise bike, stronger, more stable and compact.
BEAUTIFUL LOOK: We have more than 5 designers involved in designing this fitness bike. The distance from the handlebar to the saddle as well as the position of the pedals are ergonomic, which ensures your fitness training at home. The large LCD display uses an advanced digital monitor to plan and record your fitness statistics.
8 ADJUSTABLE MAGNETIC RESISTANCE LEVELS: After many ergonomic designs, our technical designers have finally opted for a manual 8-speed resistance adjustment, with which the gradual increase from aerobic to anaerobic exercises can be completed. It is also suitable for rehabilitation people so that the exercise can be more effective. The fitness bike can meet the needs of the whole family. LeISE and smooth.

119,99 €
03

I:SY

I:SY ISY Bicycle Saddle Bag for Bicycle Lock, Accessories - Bicycle Seat Bag

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Water-repellent material
The saddle bag offers the perfect storage space for bicycle locks, chains, accessories or even for keys and wallets.
Original i:SY bicycle saddle bag
Easy to install: with fastening straps, these saddle bags can be easily and stably attached to the bicycle seat.

24,95 €
04

ISY

I:SY I:SY V.R.-Transportgep cktr ge

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

I:SY V.R. transport pannier rack, diameter 16 mm, steel tube, steel, for attaching to the control head with 4-point mount (distance: 10 cm), matte black. Without mounting screws, suitable for all i:SY bicycles, max. Load capacity: 12 kg I:SY V.R. transport pannier rack, diameter 16 mm steel tube, steel, for attaching to the control head with 4-point mount (distance: 10 cm), matt black without mounting screws, suitable for all i:SY bicycles

94,95 €
05

Wheeloo

WHEELOO E-Bike Contact Protection Cover for Bosch Smart System I Set of 2 I Black I eBike Battery Accessories I Contact Pin Protection

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Protected from water and dirt. The contacts on the battery holder are protected from rust and sand when you transport your bike on the rear rack or park it without a battery.
Perfect fit for Bosch smart system // Compatible with all Bosch batteries and Bosch chargers in the smart system.
Firm hold: even during motorway transport and stormy weather, the cover remains firmly on the contacts thanks to rough surface and small ribs in the slots.
Easy storage: attach the cover to the key ring easily thanks to the integrated hole in the handle.
Durable and robust: the sturdy TPE material is resistant to sunlight, cold and salt water. This guarantees an extremely long service life

8,49 €
06

Wheeloo

Contact Protection Cover for Bosch E-Bike I Set of 2 I Orange I eBike Battery Accessories I Charging Cable Pin Protection Against Rain, Dirt and Dirt

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40% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Protects against water and dirt. The contacts on the battery holder are protected from rust and sand when you transport your bike on the rear rack or park it without a battery.
Perfect fit for Bosch. Compatible with all Bosch batteries and Bosch chargers. generation (not for "The smart system").
Firm hold: even during motorway transport and stormy weather, the cover remains firmly on the contacts thanks to rough surface and small ribs in the slots.
Easy storage: attach the cover to the key ring easily thanks to the integrated hole in the handle.
Durable and robust: the sturdy TPE material is resistant to sunlight, cold and salt water. This guarantees an extremely long service life

5,99 € 9,99 €(40% Off off)
07

i:SY

i:SY ISY Backpack 2.0 with Klickfix Adapter, Bicycle Backpack, Bicycle Bag, Handlebar Bag

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Waterproof backpack with removable inner compartment and practical side pocket accessible without having to put the backpack down.
The straps and back padding are breathable.
The i:SY logo and the side stripes are elegant unobtrusive during the day but highly reflective in the dark.
Thanks to the integrated adapter, it can also be attached to the i:SY Klickfix front carrier and i:SY front carrier 2.0
High-quality 500D nylon TPU material with a total volume of 25 litres
Dimensions: 51 x 30 x 12 cm

119,95 €
08

Wheeloo

Wheeloo Bosch Intuvia 100 Screen Protector, Ebike Protective Case, Transparent & Water-Repellent, E Bike Display Protection, Accessories for Bicycle Computer Cover

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42% Off
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Waterproof and scratch-proof – the display case prevents scratches in the glass and allows rainwater to simply bead off. It also absorbs shocks if your bike computer falls down.
Perfect fit for a secure hold – all edges of the Bosch Intuvia 100 display are tightly enclosed for a perfect fit. This provides a secure hold even in strong winds
Full operability – you can press all buttons as usual and the USB port is also free to charge the smartphone.
From e-bike specialists – Wheeloo has been a well-known brand for e-bike accessories for many years: more than 200,000 customers have already chosen Wheeloo
100% transparent – the UV-resistant TPU material is crystal clear and the display is easy to read. No discoloration of the case even after long time use.

8,06 € 13,90 €(42% Off off)
09

Wheeloo

Wheeloo Silicone Protective Cover for E-Bike Displays with USB Port - Bosch Intuvia Control Unit Cover - Transparent and High Quality Protection Against Scratches and Water - E-Bike Case, transparent

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39% Off
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Waterproof: your Wheeloo protective cover provides reliable all-round protection, even in heavy rain.
Unrestricted operation and 100% transparent: you can press all buttons as usual and read the display brightly and clearly thanks to 100 per cent transparent silicone. Use the USB port as usual thanks to the opening in the silicone case.
Scratch-proof: thanks to high-quality, odourless silicone, the surface is robust and malleable at the same time. Unlike screen protectors, sharp keys, etc. won’t cause any damage.
Perfect fit for Intuvia: your Bosch Intuvia on-board computer has been 3D-scanned and faithfully remodelled so that the Wheeloo protective case fits exactly.
Easy to attach: the guide rails on the on-board computer are free - slide it on the handlebars as usual.

7,22 € 11,90 €(39% Off off)
10

Wheeloo

Wheeloo E-Bike Battery Protective Case for Bosch E-Bike Against Cold and Dirt, Powerpack 300/400/500 CX/Performance/Active-Line, Increases Running Time and Service Life, E-Bike Battery Cover

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13% Off
8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Reliable All-round Protection: Scratches, stone chips and dirt are now a thing of the past. The neoprene cover provides reliable protection and can be easily washed at low water temperatures.
Increase Your E-Bike Performance: Similar to your smartphone, the lithium-ion battery does not last as long it usually in low temperatures. A cold protection cover made from 4.5 mm thick insulating neoprene is therefore the best solution, if you do not want to run out of power on cold days.
Important Note: We recommend that you only use the cover, when the outside temperature is below 15 °C. Furthermore, you should also remove it when charging to avoid overheating the battery.
Elegant Design: The battery protection from Wheeloo is well made and precisely adapted to your e-bike battery. The black matte material fits wonderfully to the conventional shape of the battery and therefore fits perfectly with your bike.
100% Perfect Fit for your E-Bike: The Wheeloo Neopre cover is precisely tailored to your battery. Whether Bosch Powerpack 300, 400 or 500 and regardless of the CX, Performance or Active Line product series, the battery protection fits perfectly and cannot slip while driving.

14,23 € 16,49 €(13% Off off)