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Mountain Bikes

Focus Thron Impulse 27R 2.0

  • Frame type


  • 250W Impulse 2.0 Offroad motor

  • 612Wh Impulse Li-Ion 36V battery

  • 10-speed Shimano XT Low Profile Plus gears

  • Impulse Compact LCD display

  • Fox suspension front and rear shocks with 120mm travel

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It's called the Thron because sitting on this you'll become King of the Mountain

Winner of ExtraEnergy's Sport Offroad Pedelec Category

The German specialist magazine ExtraEnergy gave the Focus Thron a score of 10 out of 10, finishing first in a field of 10 bikes from different manufacturers in the "Sport offroad Pedelec" category.

"Made by mountain bikers to be ridden by mountain bikers, the Thron combines a modern 27.5-inch bike with a powerful centre motor. It tears through the trees with speed and agility and is right at home on the trails. And the bike holds out for a very long time; almost 100 km on the tour, a distance no other E-mountain bike tested got even close to. Focus wins on its all-round merits."

It's powered by the new Impulse 2.0 inverted centre motor and a centre-mounted 36 volt 17Ah battery. The Thron Impulse 27R is superbly well-equipped with Shimano Deore disk brakes, Shimano XT Low Profile Plus gears, Fox front and rear suspension, new illuminated handlebar controls, Continental X-King tyres.

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.

27R Wheels

The 27R wheels featured on the Thron offer improved rollover, more traction and better momentum than 26" wheels while also providing quicker acceleration, improved angle of attack and less weight than 29" wheels making them a great all round offroad wheel for any conditions.

Other winning features

  • Compact multifunction LCD console - Speed, Charge, Assistance Level, Total Miles, Trip Miles
  • Fox 32 Float Evolution CTD forks with lock-out (can be sprung or rigid if you prefer)
  • Handlebar-mounted control - illuminated with Walk Assist button, on/off, power controls and options.
  • 612 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
  • Continental X-King tyres

Ratings and Reviews

Bikes are not just for the Summer

by from Sussex on


                   You have got it wrong. X-mas day 2015 and other winter days where spent on the Henfield/Ashurst bridleways and local roads. With my health problems X-mas 2016 holidays, weather permitting will still be possible with the help of electrics. Thank you for your exhalent service and a new lease of life with an electric bike. With time I will give you a 5-star review.

Best bike.

by from Surrey on

Very well built, excellent handling and most of a joy to ride.

Focus Thron – a multifaceted powerhouse

by from Germany on

The Thron 2.0 was subjected to extensive off-road testing in the Bikesport special edition on electric mountain bikes, and won over the test editor in all regards – great fun! 

"The Focus is pretty fun to ride on downhill stretches and gives a very safe riding experience. The weight has no negative impact, and the bike does not push forward on steep descents", praises the testing editor.

Verdict of the editorial team: The Focus Thron Impulse is an agile bike that is fun on downhills and that can hold its own on technical ascents thanks to the Climb Assist function.

 The complete test report can be found in the Bikesport electric mountain bikes special edition from 01/01/2015.

Lochness Hill Climb

by from Loch Ness on

Hi, this bike has got me addicted to mountain biking now I can get up the hills and come down even faster. The torque of the motor up hill is especially designed to get you across country like a tank over wasteland. The range is massive too only losing a third after 30 miles of hard going. I am not sure how this bike does what does but it is truly magical.

Technical Specifications

Frame Impulse 27R FS V1, alloy
Fork Fox 32 Float Evolution CTD, 15QR 120mm travel
Motor Impulse II Offroad 36 V / 250 W, with Shift-Sensor technology
Battery Impulse Li-Ion 36 V / 612 Wh
Display Impulse Compact LCD, with control panel and pushing assistance
Gears 10-speed Shimano XT Low Profile Plus
Shifters Shimano SLX
Ratios front: 38, rear: 11-34
Crank Focus, alloy
Handlebar Concept EX Riser, 720 mm
Stem Concept EX
Saddle Concept EX
Seatpost Concept EX Drop, adjust
Brakes Shimano Deore
Tyres Continental X-King, 55-584, foldable
Rear Shock Fox
Hubs front: Shimano Deore, 15 mm E-Thru, rear: Shimano Deore, 12 mm E-Thru
Rims Concept EX Disc
Colour Newwhite

Specification subject to change without notification

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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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