Shaft Drive Transmission System

The Sussex Shaft Drive Transmission System (SDTS) has been in production since 1991. Our latest generation of shaft drive uses an innovative combination of precision machined spiral bevel gears, shaft rod, sealed bearings and a patented bottom bracket design to deliver a smooth, consistent power transfer from the pedals the to rear wheel, while giving the bike a sleek, modern look. This results in many advantages versus traditional chain-driven bikes.

Click on image to see animation

To work with the SDTS, Sussex has developed a wide range of frames made specifically for the SDTS, including 700C city/hybrid frames, 700C road bike frames, 26" mountain and comfort frames, 20" folding bike frames, and 20" BMX-style kids frames. Sussex has also developed specialized components to integrate the shaft drive with Shimano's advanced 7-speed and 8-speed internally geared hubs. Our unique design minimizes weight and increases efficiency and performance far beyond any other shaft drive on the market. By combining our SDTS with the Shimano hubs, our bikes deliver a uniquely smooth ride, high performance and low maintenance. We have also developed high quality crank arms made specifically for our shaft drive in multiple lengths and color finishes.


The Sussex Shaft Drive Transmission System (SDTS) can be ordered in a variety of finishes, lengths and gear ratios -- making it easy to configure bicycles for a wide variety of riding styles, terrain and aesthetic looks.

SDTS Finishes:

Below are some of the most popular finishes for the SDTS including Silver Polish, Silver Anodized and Black Anodized.

Sussex Shaft Drive Finish Options

SDTS Gear Ratios:

The SDTS is also available in multiple gear ratios and multiple lengths to accomodate different bikes and intended uses.

  • 1.53 - for steep mountain climbing
  • 1.77 - for moderate to hilly terrain
  • 2.07 - for most versatile mix of gearing of moderate terrain
  • 2.38 - for faster speeds on flat terrain and for use on 20" folding bicycles
  • New gear ratios in development!
SDTS Lengths:
  • 410mm - 440mm: for adult 700C city, hybrid, cross and 26" urban mountain style bikes
  • 390mm - for 20" wheel folding bikes and 20" BMX Style kids bikes
  • SDTS can be made to order from 370mm - 460mm to suit your bikes and application
How Does It Work?

The SDTS uses two sets of spiral bevel gears and a shaft rod to smoothly transfer power from the cranks to rear wheel. The bevel gears are made of heat treated cromoly and paired with high quality sealed cartridge bearings coupled to a steel shaft rod – all sealed inside lightweight, durable aluminum alloy. Our shaft drive has been in production since 1991, and is already on tens of thousands of bikes all over the world. To see the shaft drive in motion, click here to view the Shaft Drive Animation.

For more details on how the shaft drive works with internal gear hubs, click Here.

The Sussex SDTS is packaged in cartons of eight. Typicaly delivery time is 30-60 days depending on quantity. The SDTS can be ordered by itself in quantities of 500 or more using a Sussex designed or certified frame, or we can assemble the shaft drive into a wide variety of Bicycles.

How to Order

If you would like a quotation on ordering thge Sussex Shaft Drive Transmission System or would like assistance developing a shaft drive bicycle for your market, please call Sussex in Taiwan at + 886 4 2568 1288, or email to

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Sussex Enterprises Co., Ltd.
336, San-Lin Nan Road, Ta Ya, Taichung, Taiwan
Phone : 886-4-25681288
Fax : 886-4-25660999
Contact : Mr. Ley Chen, President

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