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Kalkhoff Integrale i11 Speed

  • Frame type


  • Impulse Evo RS Speed Motor

  • Impulse Evo Smart Display with Bluetooth and USB charging socket

  • Intergrated Evo RS Li-Ion 612Wh battery

  • Low-maintenance carbon belt drive

  • Concept Twin LED double front light with 100 LUX output

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The perfect combination of innovation and integration.

ElektroRad awards the Kalkhoff Integrale S11 'Very Good' in a recent test.

See the latest issue of Elektrorad for the full report (German)



TYPE APPROVAL CLASSIFICATION L1e light moped. To use this bicycle on a public road the user must first register it, fit a registration plate and then tax and insure it. Registration plate holder can be removed in those territories where these restrictions do not apply.

With the Kalkhoff Integrale you have an e-bike which you can’t help but love. A quiet yet powerful motor and a fully integrated high-capacity battery ensure cycling pleasure that goes the extra mile.

At the very first glance, it is the harmony of the design which really strikes you. When you look closer, Kalkhoff Integrale will impress you with many excellent features which are all perfectly integrated into the overall look. This attention to detail, with the same level of commitment to the small things, whilst never losing sight of the requirement for perfect functionality, is the basis for an engineering work of art.

Kalkhoff Impulse Evo MotorImpulse Evo drive system is ground-breaking in terms of innovation, integration and networking. The holistic design of motor, frame and components is what makes the difference. And the result is unique: we offer you a skilfully engineered e-bike drive system with the ideal blend of design and functionality, manufactured entirely in Germany. At the same time, you enjoy important extra benefits: more power, more efficiency and more innovative ideas.

  • Enhanced performance because the motor is the most efficient yet
  • Stronger gears, designed for a huge maximum torque of 100 Nm
  • The motor's background noise has been reduced by 50%
  • An extra pedalling cadence sensor built into the motor gives even more sensitive control over the power assistance level
  • Innovative multi-tooth axis for safe crank assembly
  • The lighting system is powered via the motor
  • Faster, high bandwidth data transmission via the automotive standard CAN Bus communication system

Impulse Evo Speed provides assistance up to 28 mph (45 kph)

If you've bought a bicycle in the past 120 years, chances are it’s been powered by a chain. While the trusty bicycle chain has done every cyclist well, now the Gates Belt Drive is stronger, quieter and requires less maintenance. It’s grease-free, oil-free and hassle-free. It won’t leave any marks on your pants and you’ll never have to pull over to fix a dropped chain. The belts are one continuous loop – an inner carbon fiber tensile cord layered with polyurethane teeth and a nylon outer coating. Belts will not rust. This means that you do not need to worry about riding in the rain, or leaving your bike outside. Unlike chains, there is no need for lubrication and on average they last 3 – 4 times longer than a conventional bike chain.

Impulse Evo batteries – the best energy store incorporated into the down tube in the Integrale the Impulse Evo battery uses incredible battery technology. With 50 high-performance cells and a capacity of 17 Ah, under ideal conditions power reserves give a range of up to 125 miles (200 km).

This new battery generation also offers durability, easy handling and rapid recharging. Cleverly, the dual-function charging socket also serves as a service interface through which software updates can be applied to your bike. 

Impulse Evo LCD Smart – the intelligent networking solution . The new Impulse Evo smart display is more than just an on-board computer. Using your smartphone it also acts as a navigation system. The tasks are clearly allocated: the smartphone supplies the processing power, the Impulse Evo navigation app, based on the tried and tested Naviki software, does the routing, and the Impulse Evo smart display shows you the way with clear and simple navigation directions. Connection to your smartphone is established via the Bluetooth module, while the USB charging socket fitted as standard enables you to charge your phone while you’re on the move.

 As well as displaying handy directional arrows, street names and distances, the following functions are also permanently

  • Standard displays: Speed, remaining range, battery level, assist level, assist bar, clock
  • Selectable displays: Average tour speed, tour kilometers, tour time, maximum trip speed, average trip speed, trip kilometers, trip time, cadence, total kilometers
  • Navigation displays: Directional arrow, road name, distance to next change of direction

The Naviki software, which is as intelligent as it is easy to use, provides maps of Europe as well as a comprehensive range of functions:

  • "Start-Destination" route calculation based on your bike's current battery capacity
  • Route calculation "Plan a route around my location"
  • Save your own routes and use Naviki routes
  • Interesting waypoints (hotels, restaurants, specialist dealers)
  • Automatic mapping of the actual route taken
  • Synchronisation of all routes with your Naviki user account
  • Comprehensive editing and display options

You don’t see anything – and that is exactly the point. Brake lines and connecting cables to the motor disappear into the stem of the Kalkhoff Integrale. The result is more than just a clean cockpit. It is a design innovation and perfect proof that Kalkhoff is always an idea ahead.

  • No flying blind: the Concept Twin LED double front light ensures brilliant illumination with its 100 lux output.
  • No limitations: all Kalkhoff Integrale frames are designed as standard to use a low-maintenance belt drive.
  • No expense spared: head tube, down tube and motor mounting form a single unit thanks to the aluminium die casting process – for perfect riding stability and integration.
  • Not just for show: the minimalist carrier takes up to 15 kg of luggage and enables use of a wide range of accessories – thanks to the Snap-it system.
  • No compromises: the concealed seatpost clamp demonstrates integration right down to the last detail





Ratings and Reviews

Third bike from 50cycles and the best.

by from Radlett, Herts on

I am now on my third Kalhkoff bike from 50 cycles and my latest the INTEGRALE S11 with hub gears and belt drive is the best I have ever had ! On a regular basis as I am cycling along either on my own or in a group I am constantly thinking to myself what a wonderful experience it is. The bike is smooth, completely silent, no rattles and it just wafts me up even the steepest hills without much effort. I am 72 and it enables me to keep with those much younger than myself and generally overcome almost anyone up hills. 

The range is extraordinary and depending on the level of assistance I ask of the bike and the differing terrain it can achieve over 100 miles.
Another plus for me is the belt drive ! It means I no longer get grease marks on my legs and I can wear ordinary trousers for short runs without staining them. Also I no longer spend time after each ride cleaning and GT85'ing the chain and derailleur.

Overall therefore I am absolutely delighted with this latest addition to the Kalkhoff range and with the support given to me by 50 Cycles if I have problems. I look forward to their next model which would have to be very special indeed to improve on the model I now have. The only improvement I can think of at the moment would be to give an even greater battery range. From a very satisfied customer

The New Wheel's review of the Integrale S11

by from San Francisco on

Integrale S-11

by from North East coast on

Hi, I ordered my new e-bike on Thursday 23 June and received it Saturday morning...great!! This my second Kalkhoff and our third purchase ( wife still has hers) I did some set up adjustments and test rides...and then Sunday took it for a 30 mile test ride, this was on a mix of road and old railway cycle way and it all went superbly. I know I am breaking the law in using this bike but It is unlikely to be a problem where I live. What the bike does is allow someone my weight and age to shave 30 years and 5 stone of my cycling!

This bike is so well designed that it takes a close look to see its a e-bike. One of the benefits of riding any bike increasing fitness, fresh air etc applies here and this one lets me go routes and distances that I might struggle with. To sum it up I think this integrale is worth its price and it is superia to the Bosch powered bike that I now have for sale. Thank to 50 cycles for another smooth purchase. John Dodds

Technical Specifications

Frame  Impulse Evo RS V1, alloy
Fork  RST Pulse LO, Air, 15 mm QR, 80 mm travel
Motor  Impulse Evo RS Speed, 36 V / 350 W, with shift sensor technology
Display  Impulse Evo Smart, with bluetooth and USB charging socket
Battery  Impulse Evo Li-Ion 36 V
Brakes  Magura MT5, hydraulic disc brake
Switch lever  SHIMANO ALFINE SLS7002
Crank set  Concept
Gear ratio  front: 46, rear: 22
Handlebar  Concept EX Riser
Stem  Concept EX Integrale
Saddle  Concept EX
Seat post  Concept EX
Front hub  Shimano Deore, 15 x 100 mm thru axle
Rear hub  Shimano Alfine, 11 speed
Wheel rims  DT Swiss 545D, with eyelets
Tyres  28": Schwalbe Big Ben, 50-622
Headlights  Concept EX Twin, 100 Lux LED
Luggage carrier  Racktime system, light
Bike stand  rear stand, automatic
Protective guard  Aluminium
Pedal  Urban alloy, with anti slip protection and reflector
EbikeCharger   Impulse, 4 Ampère
Battery capacity  17 Ah (603 Wh)
Range  50miles

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