SunRace MX3 10S Shim/SRAM Drive+ Cogs – Spacers / Lockring – 11-42T

This 10 speed cassette is the perfect solution for riders that run a 1 x 10 system who need a little more at the bottom end, who don't want to resort to an expensive expander sprocket and those who want an even and smooth shift between all sprockets.

"If you need a wide-range cassette for your 10-speed bike, look no further than the MX-3 SunRace. It's cheaper than most gear extender sprockets".

Note: a longer b-tension screw may be required with some rear mechs