Cassette Cog 42T & 40T
To give you best products we still testing the cassette sprocket. But belive me it will be best of the best what can to do making of alloy on CNC machine.
The Cassette Cog 42 it was a big challenge for many months, we tested its competitors, were looking for their strengths and weaknesses as a result have developed our own project free from defects in similar products. Lighter and stiffer, quietly cooperating with the cassette as if it were a part of it. Very fast and easy to install.
Designed exclusively for use with Shimano cassettes brand, XT and XTR 10 speed 11-36. Is not compatible with other brand or model cassette. To use this mode, it is necessary to remove of the 15T or 17T cog and spacer from cassette.
NOTE. It will be most probably you need use longer bolt to SHIMANO rear derailleurs. You can buy it in your local bike shop. Also you may need a longer chain than you have on your bike. Make sure that when shift is on biggest sprocket and travel suspension is max the chain lenght is adequate.