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Low-step urban e-bike with 27.5" wheels, Bosch Performance Line CX motor (85 Nm), 750 Wh battery, range up to 180 km, carrier with 27 kg capacity, wide tires, AXA 30 Lux front light.
Detailed Description
Rock Machine follows the rule: Fun first, and then more fun. From humble garage beginnings in 1994 to the present, you can see Rock Machine bikes on World Cup tracks, but mainly on trails where Rock…
More about the brand Rock MachineLow-step urban e-bike with 27.5" wheels, Bosch Performance Line CX motor (85 Nm), 750 Wh battery, range up to 180 km, carrier with 27 kg capacity, wide tires, AXA 30 Lux front light.
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Some parts of this page are translated automatically, so please excuse any imperfections.
The Rock Machine eRokk B90 City is the ideal companion for city commuting as well as nature outings.
Thanks to its low frame, it allows easy mounting and dismounting, while the upright position ensures a comfortable ride and better traffic visibility.
The heart of the bike is the proven Bosch Performance Line CX Smart System motor with 85 Nm of torque, which provides smooth and powerful assistance even on challenging terrain. The 750 Wh battery offers a range of up to 180 km, making it perfect for long distances without the need for frequent recharging.
The bike is equipped with a Shimano CUES 1×10 gear set with a range of 11–48 teeth, offering precise and reliable shifting. A RockShox air fork ensures a comfortable ride even on uneven roads. Shimano hydraulic brakes provide strong and controlled braking performance in all conditions.
For safety and practicality, the bike is equipped with a powerful AXA front light with an intensity of 30 Lux, a carrier with a load capacity of up to 27 kg for transporting cargo, and wide tires with low rolling resistance for a stable and comfortable ride.
The Rock Machine eRokk B90 City is a great choice for those looking for a reliable and powerful e-bike for everyday use as well as weekend trips.
Batteries are one of the most valuable components on an electric bike. They often make up 1/3 of the total price of an e-bike. There are several parameters that affect the range of an e-bike: type of terrain, tyre profile, rider weight, assistance used, etc. you can read more in our blog.
The advantage of Bosch batteries is a very high quality BMS (battery management system). Thanks to temperature and voltage sensors, the BMS can switch individual cells on and off to avoid a significant reduction in range and to ensure the longest possible life of the battery itself.
Bosch motors are among the best in the world of electric bikes. Motors from the German manufacturer stand out for their reliability and quality workmanship. Bosch Performance Line CX (from MY 2022, Smart System is the motor with the maximum 340% boost. It uses a larger (38t) chainring for better power transfer. This motor is very sporty, so it is mainly designed for mountain bikes. The new feature here is the possibility of adding the ConnectModule, which will offer new anti-theft features as well as a connection to the eBike Flow app.
Appropriate use
Unpaved terrain, forest trails and hilly rides - there's no type of terrain you won't be able to keep up with.
Competition
Yamaha PW-X3, Shimano EP8, Brose S MAG, SyncDrive Pro, Panasonic GX Ultimate, or on paper Bafang M500
Parameters
Torque - 85 Nm
Weight - 2.9 kg
EAN: 8592842210416
E-bike range calculator
The stated range is approximate. The actual total range is influenced by several factors, such as the selected assistance mode, the technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique.
Manufacturer: BIKE FUN International s.r.o., Areál Tatry 1445/2, 74221 Kopřivnice, info@bikefunint.com, www.rockmachinebikes.com/en-en
heat-treated aluminum alloy 6061-T6, with low entry
air RockShox Judy Silver TK, Tapered, axle 15×110 mm / 100 mm
Acros ZS56/ZS56
Bosch Performance Line CX, 85 Nm (250 W, 36V), Smart System
BOSCH BATTERY POWER TUBE 750
Bosch 4A charger
Bosch Kiox Smart System
180 km
WTB Groov-E Comp, 27.5×2.4"
Stars J30
front: Shimano HB-TC500-15-B, rear: Shimano FH-QC300
Sapim Leader, Stainless Black, safety nipple lock
Shimano Cues SL-U6000 RapidFire Plus, 10-speed
Shimano RD-U6000
One1 EC39-BH4-F13-ISIS
Shimano CS-LG300-10, 11–48 teeth
Shimano CN-LG500
flat, nylon reinforced with glass fiber
Shimano MT200
Shimano SM-RT66, ø 180 mm
Velobel, BB, ø 31.8 mm, width 760, 40R, 13° Backsweep
TDS-C342 Alloy, ø 31.8 mm, e45, +3°
HERRMANS CLIK DD37
Selle Royal Essenza Moderate
Suspended, One1 Alloy, ø 30.9 mm
bell, front light, fenders, rack, kickstand, lock
28.45 kg
Matte Nightstorm Blue
L (18,5 - 20)
Electric Bicycles
Mens / UNI
Aluminum Alloy
Bosch Performance Line CX
750 Wh
Mid-Mount
27,5"
Disc
2025
Blue, Black
The wheel manufacturer reserves the right to change the wheel specifications without any reason. In exceptional cases, the delivered product may differ from the specified specifications and images to improve the availability or functionality of the wheel.
Rock Machine follows the rule: Fun first, and then more fun. From humble garage beginnings in 1994 to the present, you can see Rock Machine bikes on World Cup tracks, but mainly on trails where Rock…
More about the brand Rock MachineDo you need help choosing the right product?
Contact us.
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Für Versand nach Deutschland, besuchen Sie bitte Rock Machine eRokk B90 City Tiefeinstiegs Elektrofahrrad – Matte Nightstrom Blue
Für Versand nach Österreich, besuchen Sie bitte Rock Machine eRokk B90 City Tiefeinstiegs Elektrofahrrad – Matte Nightstrom Blue
Chcesz dostarczyć towar do Polski? Sprawdź Rock Machine eRokk B90 City niskonastupowy rower elektryczny Matte Nightstrom Blue
Chcete doručit zboží do České republiky? Prohlédněte si Rock Machine eRokk B90 City nízkonástupové elektrokolo Matte Nightstrom Blue
Chcete doručiť tovar na Slovensko? Pozrite si Rock Machine eRokk B90 City nízkonástupový elektrobicykel Matte Nightstrom Blue
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