Classified Powershift Hub Gear Non Boost
The CD 27 gear system for frames with a 12x142mm mounting width and a mount for Powershift cassettes
The gear system of the Classified Powershift gear hub switches between a standard 1:1 gear ratio and a 0.7:1 reduction ratio. Designed for drivetrains with a single chainring, the gear ratio range is then similar to that of a double chainring set.
A 1x drivetrain with a 52-tooth chainring thus offers the gear range of a 52-36 double crankset; a 1x drivetrain with a 50-tooth chainring corresponds to a 50-35 range, one with a 48-tooth chainring corresponds to a 48-34 range, and so on...
Included in delivery:
- Powershift Classified CD 27 hub gear, Centerlock lockring, hub body lockring
Classified Powershift gear hub dimensions and specifications:
- Application: Road, Gravel, MTB
- 2 gears with 1:1 and 0.7:1 gear ratios
- Shifting under full load up to 1500 W
- Instant shifting <150 ms
- Efficiency 99%
- For disc brakes, Centerlock brake disc mount
- Weight: 486 grams, manufacturer’s specification
- Also compatible with Shimano Di2 and TRP Vistar shift levers
Classified Powershift drivetrain – gear hub:
With the CD27 drive mount, you can use both 10-tooth and 11-tooth chainrings, provided you use the correct cassette spacer and lockring. The drive mount has a diameter of 27 mm, allowing the smaller 10-tooth cassette to be fitted.
Classified Powershift technology offers a technical alternative to traditional 2-speed drivetrains with a front derailleur. By integrating a wireless 2-speed shifting mechanism directly into the rear hub, the function of a front derailleur is completely replaced. Gear changes occur virtually without delay and are possible at any time, even under heavy load and on varied terrain. The absence of a front derailleur significantly reduces aerodynamic drag. At the same time, the constant chainline eliminates cross-chaining, leading to a measurable increase in efficiency and reduced wear. The use of larger chainrings eliminates the need for small gear ratios, which has a positive effect on durability, power transfer and system efficiency.
The (separately available) thru-axle features a rechargeable battery and, thanks to Bluetooth technology, enables lightning-fast gear changes of under 150 milliseconds. Two different shifters are available for flat and drop bars. The Powershift hub features a special cassette mount. Standard third-party cassettes are not compatible. A wide selection of compatible Classified cassettes enables gear ratios of up to 583%. Hub bodies are available in versions for straight-pull and J-bend spokes.
Compatibility:
No modifications to the frame or dropouts are required to install the Powershift system.
The Powershift hub is compatible with all standard 11-, 12- and 13-speed shifting systems from SRAM, Shimano and Campagnolo. For Shimano Di2 12-speed shifting systems, full integration is possible, allowing the Powershift hub to be shifted using standard shift-brake levers. When selecting the Classified cassette, the maximum sprocket capacity of the rear derailleur must be taken into account.
A particular highlight: when the Powershift hub is combined with TRP’s VISTAR groupset, the QuantumShift system enables simplified shifting for improved concentration. QuantumShift uses the rear derailleur, 12-speed cassette and Powershift hub to create 16 unique gears (15 for gravel), all controlled with one hand on the shifter.
What components are required?
The hub gear is the heart of the Powershift system. The following components are required for installation:
- Classified hub body
- Classified hub body lockring
- Classified Smart Thru Axle
- Classified torque arm
- Classified cassette
- Classified Ring Shifter or Classified Control Unit with shifters or Shimano Di2 shifters (wireless)
- Possibly spacers for torque arm and thru-axle
Your choice of wheel with Powershift hub:
Ask us for a personalised quote. We will lace your chosen wheel, perfectly centred by hand. Select your preferred rim from the complete range of DT Swiss, e*thirteen, Mavic, Stans NoTubes and WTB rims. We use exclusively DT Swiss spokes. Over the last few decades – ever since we started building wheels – these spokes have proven themselves to be by far the most durable.
Herstellerinformation: Classified Cycling, Damplein 23, 2018 Antwerp, Belgium, https://www.classified-cycling.cc/
