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Serious Bear Rock E-MTB Hardtail 29" black

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Product details

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
  • Suntour XCM 100 mm spring travel with lockout
  • Shimano Alivio 9-speed shift
  • 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 (except the VOTEC VRC which comes with a 6-year warranty on frame and fork), Serious, Vermont, Fixie and Ortler bikes from the date of purchase. 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.
E-Bike 25km/h
Intended use
E-Mountainbike Hardtail
Damper brand: Without damper
System: Diamond
Material type: Aluminium
Material: Aluminium
Brand: Bosch
Model: Performance CX
Type: Bottom bracket motor
Performance: 250Watt
Battery function
Model: Bosch Power Pack
Type: Lithium-Ion
energy storage: 500Wh
Performance: 36/14.8Volt/Ah
Lifespan: 1000Load cycles
Charge time: 4.5- 7.5Hours
battery mounting: Frame battery
Bosch Purion
Type: Bosch quick charger 4A
Voltage: 220Volt
Reach: 40 - 120 km
System: Suspension fork
Brand: Suntour
Type: XCM DS
Suspension Fork
Travel: 100 mm
Gear set
Drivetrain type: Derailleur
Gear No.: 9
Brand: Shimano
Type: Alivio
Gear lever
Brand: Shimano
Type: Altus
Brand: Miranda
Type: For Bosch, 170 mm, with chain guard
Sprocket 1: 18Teeth
Inner bearing
Brand: Bosch
Type: Integrated
Brand: KMC
Type: X9
Brand: Shimano
Ration chainring: 11- 32Teeth
Type: Acera
Front brakes
Brand: Shimano
Type: BR-M315
Brake system: Hydraulic disc brake
disc diameter: 180mm
Rear brakes
Brand: Shimano
Type: BR-M315
Brake system: Hydraulic disc brake
disc diameter: 160mm
Brake lever
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
Saddle pin
System: Patent post
Diameter: 31.8mm
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 tyres
Brand: Schwalbe
Type: With integrated handles: yes
Size: 29Inch
Tire width: 54mm
Rear tyres
Brand: Schwalbe
Type: Smart Sam
Size: 29Inch
Tire width: 54mm
FPD NW-428-1 BS
Delivery size
Includes pedals: Yes
21.39 approx. kg
Total weight
130 approx. kg
Model year
Product number
Customer Ratings
6 Customer Ratings
5 Stars
4 Stars
3 Stars
2 Stars
1 star

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