The D-Drive System: Advanced Technology for a Better Ride

Imagine what people thought when presented with the idea of a telephone not connected by a wire. Or an airplane that doesn't use a propeller to fly. Well, the idea of a bike without a chain may have seemed equally as revolutionary to some, but it is this concept that makes the Dekra D-Drive a truly innovative bike. Dekra's patented D-Drive chainless drive system replaces the parts of a bike that cause the most problems – the chain and derailleur. By doing so, it also eliminates the grease, maintenance, torn clothing and other issues common with chain-driven bikes.

How It Performs
The technologically advanced design of Dekra's D-Drive system helps make bike riding more enjoyable. In addition to eliminating the fuss and mess of a chain, D-Drive provides other advantages over a chain that include:

  • Compact performance The D-Drive system is compact, taking up less overall space on the bike.
  • Safety The D-Drive system eliminates any danger of clothing or fingers being caught in the chain or sprockets.
  • Durability D-Drive's internal drive shaft is less likely to sustain damage from falls and road debris.
  • Less maintenance Because the chainless D-Drive system is protected from external elements it doesn't need the ongoing cleaning, lubrication and "check ups" that a
    chain-driven bike typically requires.
  • Weather protection While a chain is continually exposed to rain, mud, and other weather-related conditions, D-Drive is protected from the elements.
  • Cleanliness Unlike a chain, the lubrication for the D-Drive is contained within a sealed crank, shaft rod and gear housing. Therefore, with the chainless D-Drive system you don't need to worry about staining clothing or hands.
  • Longer life The D-Drive system has a significantly longer life than that of a chain. In fact, D-Drive carries a warranty for the life of your bike.

How It Works
The Dekra D-Drive uses a drive shaft to transmit power from the bike pedals to the rear wheel. This drive shaft employs a fully-enclosed bevel gear system made of a lightweight, yet highly durable, aluminum alloy. Shimano internal gears within the rear wheel enable the D-Drive system to deliver smooth, quiet performance while optimizing pedaling efficiency. A Shimano "twist and go" gear system provides easy, responsive gear shifting operated at the hand grip. So there's no more grasping for hard to reach gear shift levers!



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Technical Specifications

D-Drive direct drive system

  • Machine milled aluminum alloy construction
  • Fully enclosed beveled gear system
  • 18" drive shaft
  • Lifetime warranty

Shimano Nexus Internal
3-speed Gear Hub

  • 3-speed
  • Shifting Power Modulator
  • Internal BrakeCoaster
  • Steel Hub Shell
  • Corrosion Resist Coating
  • Gear Ratio: 186% total, 1:0.733, 2:1, 3:1.36
  • Axle Length (mm) 168/178/175
  • Weight: 1,120g
  • Gear Change Support

Shimano Nexus Internal
7-speed Gear Hub

  • 7-speed
  • Shifting Power Modulator
  • Aluminum Hub Shell
  • Corrosion Resist Coating
  • Gear Ratio: 1: 0.632, 2: 0741, 3:0843, 4: 0.989, 5: 1.145, 6: 1.335, 7: 1.545
  • Axle Length (mm): 182mm
  • Weight: 1,465g

Shimano Nexus REVOSHIFT

  • Twist Shifting Action
  • Full Range Shift Action
  • 3 and 7 speed models
  • Dial-Type Optical Gear Display
  • Stainless Steel SL Inner Cable
  • 3-Speed: 2 Gear Shifts with a Single Stroke
  • 7-Speed: 6 Gear Shifts with a Single Stroke

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