10-speed mountain, gravel and city riders who want a lower climbing gear or are setting up a 1x drivetrain.
The SunRace MS3 cassette spreads 10 gears from 11 to 40 teeth, a popular way to give a 10-speed bike a much easier climbing gear. It's a favourite for 1x conversions and for riders who want more range on hilly commutes or gravel roads.
The largest cogs sit on two alloy spiders to save weight, bringing the cassette to 414 g. It slides onto a standard Shimano HG spline freehub and works with 10-speed shifters and chains.
11-40T range
Wide spread for climbing.
HG spline
Fits standard Shimano-style freehubs.
Alloy spiders
Keeps the weight to 414 g.
1x friendly
Popular for single-ring setups.
Cassette
Great for
Maybe not for
Fits HG spline freehub bodies. Your rear derailleur needs enough capacity for a 40T cog, usually a long-cage mountain derailleur or one with a hanger extender.
Check chain length
Going to a 40T cog usually means a longer chain. Size it on the big ring and 40T cog, and set the derailleur B-tension so the top pulley clears the big cog. A fresh 10-speed chain will get the most out of new cogs.
Hard-working drivetrain parts since 1972.
SunRace is a Taiwanese component maker that has been building bike parts since 1972. It is best known for cassettes, freewheels and shifters that give everyday and trail bikes a wide gear range at a sensible price.
