Crazy sale price only available to customers collecting in store ...

Was £2649.99 now £1699.99 


Make light work of mountains with the Twitter TRACKER-ER Electric Mountain Bike. If you’re looking for effortless electric riding, on and off road, the TRACKER-ER is an outstanding option.

The 10ah battery will give you up to 30 miles of electric pedal power – perfect to get you over those peaks. And when you’re back after riding, a charge time of 4-6 hours means the TRACKER-ER will be ready to go again in no time. Power is delivered by a rear hub motor with torque sensor, for smooth and responsive assistance when you need it, the TRACKER-ER comes with an integrated smart control system that protects the battery from overheating, short circuiting or overcharging.

The electric motor of the TRACKER-ER is controlled via full LCD Smart Head Unit. It allows you to choose from one of 5 assistance modes, depending on the level of support you require. The unit also allows the user to view additional data such as Speed , Mileage , Battery use , Shift , etc to provide additional data whilst riding.
Add in a lightweight aluminium frame & Shimano M2000 gear system and you’ve got a bike that offers seamless climbing. For the descents, there’s the Shimano MT200 Hydraulic brakes. A TWR-R Suspension fork with 120mm of travel & ADY-36RC Rear shock allow you to tackle trails with ease, while double wall alloy rims and Kenda tyres provide excellent grip on the ride down.



With a large battery capacity of 10Ah and a range of up to 30miles per charge the TRACKER-ER is very capable of going the distance. With a frame-mounted battery on the TRACKER-ER down-tube, weight is balanced against the rear mounted hub motor providing an improved ride quality, over those with rear-mounted batteries.


The TRACKER-ER is built around a fantastic XD brushless 36v 250w rear hub electric motor system, seamlessly integrated into the rear wheel, providing improved traction and controlled handling.

Motor Performance 20 Mph + in a deristrected state 


The power control in the system is delivered courtesy of a premium Holzer sensor, which gradually eases the power in and out in response to your input, providing a natural ride characteristic and a real reason to upgrade from more basic speed sensor systems. The quality of the Torque sensor is really notable when accelerating out of corners and make small, or when making tighter intricate manoeuvres.


Frame / Components


Frame: Lightweight aluminium 17.5"
Gears: Shimano M2000 single ring
Suspension: 120mm Mechanical , Manual Lockout.
Brakes: Shimano MT200 Hydraulic & Hs1 Discs
Wheels: 27.5" with Kenda K1187 Tyres


Jac's Electric bikes had set out to resolve the dilemma of Legality around the restriction of speed when in use on the public highway ( max speed 15.5mph ) and are happy to have introduced one of the first electric bike ranges that combine both configurations! We have developed a unique system that allows the user to swop between two modes depending on whether you are on-road or off-road, allowing you to unlock the full performance where it is safe and legal to do so.


Terms & Conditions

We strongly recommend that you use a Helmet & Safety equipment when riding your electric bike. Riders are required to follow/abide by the highway code/road traffic act at all times.
Range & Speed is dependent on the weight of rider, the topography of the journey, wind conditions, temperature, humidity, phase of moon and star sign.
All pictures/images are for guidance only, products may vary from images shown dependent on availability at time of purchase.
We reserve the right to change specification without prior notification.



    £2,649.99 Regular Price
    £1,699.99Sale Price