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The Future is Now - Tomorrow’s bikes, new today

Serious Bear Rock grey matt (2019)

ID: 901011
- 32%
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Product Description

Please note: all of our bike models come with an EU standard brake setup. This will need to be reversed to comply with UK cycling standards.

With the Serious Bear Rock you start powerful into the new world of E-Mountainbiking. The sporty and stable aluminium hardtail with the Bosch Performance drive offers strong support during the ascent and convinces with its real mountain bike character on all trails. The combination of a 100 mm Suntour XCT DS suspension fork and sturdy wheels lets it roll effortlessly over obstacles on the trail, offers balanced agile riding characteristics and, in combination with the powerful electric drive, ensures driving dynamics on all routes. Fully hydraulic Shimano disc brakes guarantee ample control of the bike at all speeds. Nine gears in combination with the Bosch engine integrated in the bottom bracket are enough to conquer even steep ramps. The standard large 400 Wh Li-Ion battery provides extra support and range. The Serious Bear Rock E-Mountainbike is the right partner to be more relaxed, faster or simply more often on unpaved and paved roads.

Special Features

10 years warranty


10 Year Guarantee

As a thank you to our customers, Bikester voluntarily grants an additional 10-year warranty for all VOTEC's owners, Serious, Vermont, Fixie and Ortler bikes from the date of purchase (except the VOTEC VRC which comes with a 6-year warranty on frame and fork). This warranty covers all frames from the year 2013 onwards and guarantees a replacement or repair. Follow-up costs such as assembly and transport are not included. The warranty excludes damage caused by improper use, such as: jumps, falls, overload or neglect. The guarantee expires in the case of unauthorised changes to the frame as well as the installation and conversion of additional components. In addition, a two-year warranty applies to every parts and surface.

Bosch Performance Line

On extended sports tours, on the way to work or cruising in nature - the Performance Line turns e-bikers into discoverers and adventurers. The powerful propulsion provides the required power at any time. To conclude: Riders get the perfect support in every situation to provide even more fun in the saddle - up to 25 km / h with the Drive Unit Performance Cruise or up to 45 km / h with the Speed variant.


How many miles will my battery last?  
Can I get 50 miles from one battery charge or even 120? For those interested in buying an e-bike, this is a very important question. Manufacturers try to be as realistic as they can about possible ranges your e-bike may manage on one complete battery charge. In practice, however, the maximum range depends on many different factors.  As well as the type of motor you have, factors include the energy content (400 or 500 Wh), handling and age of the battery. However, the rider's weight, sitting position, riding style (starting frequency, cadence) and selected support levels (Eco, Tour, Sport, Turbo) all greatly influence the range. Last but not least, the track profile (uphill or flat), the ground (road or terrain), wind (headwind, tailwind) and even tyre profile effect distances possible. This makes it extremely difficult to provide precise and reliable information.
25km/h E-Bike  
Intended use
E-MTB Hardtail  
Wheel Size
27.5/ 29  Inch
Total number of gears
21.78  kg
Total weight
120  kg
Scope of Delivery
Includes pedals: Yes  
Damper brand: Without shock
System: MTB hardtail frame
Material type: Aluminium
Brand: Bosch
Model: Performance 
Type: Bottom bracket motor
Performance: 250 Watt
Model: Bosch Performance Line
Type: Lithium-Ion
energy storage: 400 Wh
Performance: 36 / 11,1 Volt/Ah
battery mounting: Frame battery
Bosch Purion  
Type: Bosch quick charger 2A
Voltage: 230 Volt
Range (km): 40 -90 km
System: Suspension fork
Brand: Suntour
Type: XCT DS
Suspension Fork
Travel (mm): 100 mm
Shifting Components
Drivetrain type: Derailleur
Gear No.: 9
Brand: Shimano
Type: Acera
Shift Levers
Model: Shimano Altus  
Model: FSA 170 mm
Sprocket 1: 16 Teeth
Model: KMC CNX9  
Sprocket Gear Ratio (teeth): 11-32 Teeth
Model: Shimano Acera
Front Brakes
Brand: Tektro
Type: HDM285
Brake system: Hydraulic disc brake
Rear Brakes
Brand: Tektro
Type: HDM285
Brake system: Hydraulic disc brake
Brake Levers
Model: Shimano HDM285  
System: Riser
Model: Kalloy HB-RB11, 720 mm
Material: Aluminium
Herrmans Click  
System: A-Head
Model: Kalloy ASDC1
Material: Aluminium
System: Patent post
Diameter: 27.2 mm
Material: Aluminium
Model: Schürmann SDR light, eyeletted
Material: Aluminium
System: Hollow chamber
Niro 2.0 black  
Front Tyre
Tire width: 53 mm
Model: Impac Ridgepack
Rear Tyre
Tire width: 53 mm
Model: Impac Ridgepack
VP VPE-890  
Model year
Product number
Customer Ratings
21 Customer Ratings
5 Stars
4 Stars
3 Stars
2 Stars
1 star
bad bike
huono pyörä
Translated from Finnish To the original

have been new to electrical failure and the wheel is not serviceable, been for two months 3 times in two different bosch servicing hassles.

ollut uudesta asti sähkövikainen,eikä huolto saa pyörää kuntoon,ollut kaksi kuukautta 3kertaa kahdessa eri bosch huollossa turha ostos.

Suitable for beginners
Für Anfänger geeignet
Translated from German To the original

The bike arrived directly with a flat tire. Until now, I had to pay for the costs myself, because the customer service simply does not answer. But good, the actual bike is already quite a lot for the price. It drives safely and stably (also on trails). And the engine strongly supports up to 25km / h. After that you have to do more. Unfortunately, that happens very suddenly, so you have to get used to it a bit. If the first inspection with in the price and the customer service better I would probably have given the full 5 stars.

Das Fahrrad kam direkt mit einem platten Reifen an. Bis jetzt musste ich selber für die Kosten aufkommen, da der Kundenservice sich einfach nicht meldet. Aber gut, das eigentliche Fahrrad gibt schon einiges her für den Preis. Es fährt sich sicher und stabil (auch auf Trails). Und der Motor unterstützt stark bis 25km/h. Danach muss man selber mehr leisten. Leider kommt das sehr plötzlich man muss sich also schon etwas dran gewöhnen. Wäre die 1. Inspektion mit im Preis und der Kundenservice besser hätte ich vermutlich die vollen 5 Sterne gegeben.

A relatively expensive bike on a Norwegian scale
En relativt dyr sykkel i norsk målestokk
Translated from Norwegian To the original

The bike is good to ride, a few gears, and then it helps little that mine needs to adjust as it does not use all the gears. This should have been adjusted from the factory, the ad says. Regardless of a relatively expensive bike, $ 16,995 / 24,595. The bottle holder does not hold the bottle as the battery is in the way for the bottle to go all the way into the holder. Otherwise, the Bosch auxiliary engine is just as good as on the old electric bike so here you get to where you want in trails and otherwise in nature. The tires are large and good in trails and woods and the front cushioning is the same as on Scott's regular bikes.

Sykkelen er god å sykle på, litt få gir, og da hjelper det lite at min må inn for justering da den ikke bruker alle girnavene. Dette skulle vært justert fra fabrikk står det i annonsen. Uansett en relativt dyr sykkel, kr.16.995/24.595. Flaskeholderen holder ikke på flasken da batteriet er i veien for at flasken skal gå helt ned i holderen. Ellers er Bosch hjelpemotoren like god som på den gamle elsykkelen så her kommer man frem der man selv vil i løyper og ellers i naturen. Dekkene er store og gode i løyper og skog og dempingen foran er den samme som på Scott sine vanlige sykler.

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