Don't see the secure browser window of PayPal?

You can open it again and complete your purchase.

Thank you for your patience. Your order is almost completed.

Sorry, this product is no longer available.

Serious Bear Rock E-MTB Hardtail 29" black

- 25%
Incl. VAT, free shipping
Not in stock
I would like to be notified when the product is back in stock.

  • 40,000 items
    500 brands
  • Hotline: 020 3885 0018, Mon-Fri: 9 am-4pm
  • 100 day return policy
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.

The Serious Bear Rock 29” is a powerful and sturdy hard tail electric bike which features a high-performance Bosch motor.

Boasting high specifications and a solid design, the Bear Rock is ideal for those looking for a versatile bike. The powerful Suntour XCM 100mm front suspension fork absorbs shock on the trails while the motor takes off the strain when you need it most. Quality components include a 9-speed gear system and powerful disc brakes, both supplied by Shimano. The sporty Schwalbe tyres offer excellent grip and control.

The Bosch motor system is controlled via a clear and intuitive display mounted on the handlebars. It is designed for long distances and the battery has a long life.


  • Schwalbe Smart Sam tyres for sporty use
  • Shimano's powerful disc brake
  • Shimano Alivio 9-speed shift
  • Note: Contrary to the picture the bike is delivered without remote lockout - suspension fork has only one lockout at the suspension fork
  • pedals included in delivery
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 CX

The Performance Line CX from Bosch takes sporty e-biking to a new level - the drive system allows you to experience the incomparable powerful Bosch Uphill Flow. You can look forward to a noticeable increase in performance, up to 75 Nm of maximum torque and lasting strength up to high pedaling frequencies for sporty acceleration even in alpine terrain.


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.
E-Bike 25km/h  
Intended use
E-Mountainbike Hardtail  
21.39  approx. kg
Total weight
130  approx. kg
Scope of Delivery
Includes pedals: Yes  
Damper brand: Without shock
System: Diamond
Material type: Aluminium
Brand: Bosch
Model: Performance CX 
Type: Bottom bracket motor
Performance: 250 Watt
Model: Bosch Power Pack
Type: Lithium-Ion
energy storage: 500 Wh
Performance: 36/14.8 Volt/Ah
Lifespan: 1000 Load cycles
Charge time: 4.5-7.5 Hours
battery mounting: Frame battery
Bosch Purion  
Type: Bosch quick charger 4A
Voltage: 220 Volt
Range: 40 -120 km
System: Suspension fork
Brand: Suntour
Type: XCM DS
Suspension Fork
Travel: 100 mm
Shifting Components
Drivetrain type: Derailleur
Gear No.: 9
Brand: Shimano
Type: Alivio
Shift Levers
Brand: Shimano
Type: Altus
Brand: Miranda
Type: For Bosch, 170 mm, with chain guard
Sprocket 1: 18 Teeth
Bottom Bracket
Brand: Bosch
Type: Integrated
Brand: KMC
Type: X9
Brand: Shimano
Ration chainring: 11-32 Teeth
Type: Acera
Front Brakes
Brand: Shimano
Type: BR-M315
Brake system: Hydraulic disc brake
disc diameter: 180 mm
Rear Brakes
Brand: Shimano
Type: BR-M315
Brake system: Hydraulic disc brake
disc diameter: 160 mm
Brake Levers
Brand: Shimano
Type: BR-L315
Brand: Kalloy
Type: HB-RB11
System: Riser bar
Material: Aluminium
Topeak G30  
Brand: Kalloy
Type: ASDC1
System: A-Head
Material: Aluminium
Head Set
Star-N A-Head Semi-integrated  
DDK D540A  
System: Patent post
Diameter: 31.8 mm
Type: Kalloy SP-DC1
Material: Aluminium
Front Hub
Brand: KT
Type: K68F
Rear Hub
Brand: KT
Type: K68R
Wheel Size
29  Inch
Brand: Schürmann
Type: SDR-Light
Material: Aluminium
System: Hollow chamber
Niro 2.0 black  
Front Tyre
Brand: Schwalbe
Type: With integrated handles: yes
Size: 29 Inch
Tire width: 54 mm
Rear Tyre
Brand: Schwalbe
Type: Smart Sam
Size: 29 Inch
Tire width: 54 mm
FPD NW-428-1 BS  
Model year
Product number
Customer Ratings
6 Customer Ratings
5 Stars
4 Stars
3 Stars
2 Stars
1 star

Need help?
We’re available to take your call
Mon-Fri: 9 am-4 pm.
020 3885 0018
Sign up now and receive a voucher worth £103. Get access to exclusive offers and deals.
Satisfied customers
Are you satisfied with our service?
We welcome your comments and suggestions.