E Thirteen Extended Range EX Cog
1x Drivechains are everywhere you look this season from complete bikes to winning enduro rigs. Everyone is doing it so why should you have to miss out? With the e*13 EX Cog range extender you don't have to.
Simply fit this sprocket to your existing 10 spd cassette, using the clear instructions provided, and say goodbye to your front shift setup.
It's an add-on cog to extend gear range of 10 spd. Shimano™ and SRAM™ cassettes. It comes in 40t and 42t for use with Shimano™ cassettes and a 42t only for use with SRAM™ cassettes. Installing your EX Cog is easy. Remove the 15t or 17t cog from your cassette, place the EX Cog on your freehub, then install your existing cassette back in place. Each EX Cog is timed and ramped specific to Shimano™ and SRAM™ cassettes. The EX Cog comes with a longer steel replacement, B-limit screw for your derailleurs. Your current one won't be long enough to get the best shifting up to the new cog.