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Kalkhoff Sahel Compact i8 Red

  • Frame type


  • Kalkhoff Impulse II 250W motor system

  • 11Ah Impulse Lithium battery

  • Shimano 8-speed hub gears

  • Compact 46cm alloy frame

  • Speedlifter Twist handlebars stem

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ElektroRad awards the Sahel Compact 'Very Good' in a recent test.

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

The Sahel Compact offers impressive agility on your way to work, and also performs exceptionally well through zig-zagging back street short-cuts. Its short wheelbase means it can be stored and transported in all sorts of tight spaces. It's the lightest of the Impulse drive range at around 22.5kg. The Schwalbe Big Ben tyres look the business and take the edges off rough terrain.

It's powered by the Impulse 2.0 centre motor with either a 36 volt 11Ah battery. The Sahel Compact is superbly well-equipped with Magura hydraulic brakes, brilliant front and rear lights, new illuminated handlebar controls, puncture-resistant tyres, integrated mudguards and handy kickstand.

Impulse 2.0

Providing an enormous 70Nm torque and working with the gear shifter to provide seamless transmission it's the most capable crank drive unit around. Kalkhoff have engineered a more powerful, efficient, quieter motor that supplies massive assistance from a standing start and cuts all hills down to size.

Shift Assist

A genuine innovation this year - every time you change up or down a gear, power drops away for a matter of milliseconds for optimal gear shifting. This does a number of great things - it extends your gears mechanical lifetime, feels satisfyingly natural and makes for a smoother application of all that power. They had to invent a litte electromechanical gadget to detect gear changes that worked with the motor. They succeeded and the result brings a new feeling of confident power to riding a Kalkhoff electric bike.

Magura hydraulic brakes

It's been some years since Kalkhoff dropped cable-pull brakes on their most popular models. Magura's hydraulic piston design makes braking easy, well-modulated and reliable over time. There are no cables to stretch, the whole surface of the brake pad is applied to the rim (protecting both), pads last for ages and braking is strong and sure-footed. Looks cool too, with strong arch and neat braking assembly tucked against the forks.

Front and rear lights

Powered by a free-running Shimano hub dynamo, the lights on this and all Kalkhoffs are excellent. Few bikes on sale in the UK benefit from front and rear illumination of this quality and utility. The rear lamp behaves like a brake light, brightening when the bike's brain detects deceleration. Not only that, the rear lamp with remain lit for several minutes at standstill, for added visibility when waiting at lights or junctions.

The front lamp casts 30 lux of cool, bright LED light forward, enough to make night rides across the park something to enjoy rather than endure.

Other winning features


  • Compact multifunction LCD console - Speed, Charge, Assistance Level, Total Miles, Trip Miles
  • Compact, robust frame with short wheelbase and quick-folding features
  • Handlebar-mounted control - illuminated with Walk Assist button, on/off, power controls and options.
  • Magnesium alloy forks
  • 396 Wh Lithium tri-metal battery
  • 1100 cycle battery lifetime, more than twice that of the Bosch battery. So 50% extra capacity and 120% extra lifespan
  • Schwalbe Big Ben puncture resistant tyres

Ratings and Reviews

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Technical Specifications

Frame Impulse Compact V4, alloy
Fork Urban Compact, alloy
Motor Impulse II Pedelec 36 V / 250 W, with Shift-Sensor technology
Battery Impulse Li-Ion 36 V / 11Ah
Display Impulse Compact LCD, with pushing assistance
Shifting System Shimano Nexus Revo Shifter
Crank Kalkhoff Impulse, alloy
Cassette Starr
Gears Shimano Nexus 8 speed
Ratios front:38, rear:16
Handlebar Concept EX Riser
Stem Speedlifter Twist / Concept EX
Saddle Concept SL Trekking
Seatpost Concept EX
Brakes Magura HS11, hydraulic rim brake
Levers Magura HS11
Rims Rodi Web, Compact
Tyres Schwalbe Big Ben 55-406, with reflective stripe
Mudguards Plastic with edge protectors
Rack Tour 2-leg, alloy
Side stand Aluminium, adjustable
Headlight AXA Blueline, 30 Lux LED with parking light
Backlight Trelock LS 613, with safety back-light
Colour red
Seat tube SIZE (mm) 460
Wheel size 20”
Wheelbase (mm) 1099
Standover height (mm) 492


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First Class Service

We specialise in providing the best electric bikes and the smartest cycling accessories in the UK. We also offer the most responsive and knowledgeable after sales service.

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Finance Options Available

All our new bikes are available to buy with interest-free finance (typical 0% APR). You can ease the cost of ownership by paying a deposit and choosing one of our finance packages when checking out.

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Book a Test Ride

Sometimes it takes a test ride to understand what an e-bike can do for you. Please visit one of our showrooms or take a test ride with a local Kalkhoff owner who's also a demonstrator

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