This first-ever product in the history of the cycle industry is a breakthrough in technology. Compatible with Cassette Hubs, these exquisite small cogs are fitted on racing cassettes to achieve high performance result. For example, MARS 10T can be fitted on a 7 speed road cassette to transform into a 8 speed road cassette; whereas MARS 9T & 10T can be fitted on a 7 speed road cassette to transform into a 9 speed road cassette. This is applicable to 8 speed and 9 speed road cassettes as well, and can transform up to a 10 speed road cassette.

Our road tests prove that MARS 10T and MARS 9T & 10T cogs direct the chain to follow the contour of the end saw teeth and to accept or release the chain on demand. The end result is a faster, smoother and quieter shifting.