Sunrace MX3 10 speed wide range cassette (11-40t)


Sunrace MX3 11-40t cassette with red spider in silver cogs

Got this one off Amazon for under $60 which is great value.

Cassette seems well made and machining looks good.  Cogs are rivetted on the spiders nice and tight, so should be rattle free.


Sunrace CMX3 11-40t cassette close-up showing CNC machining and spider/ring rivet

Weight is a pretty respectable 386g, helped out no-doubt by the 40t ring being made of aluminium.


Sunrace CMX3 11-40t cassette on scale weighs 386g

An 11-42t 10 speed and 11-42t 11 speed version are also available, as well as a cheaper (though heavier) 11-42t 10 speed version.

Gear ratios

Cogs are as follows:

11131518212428323640

Sunrace 9 speed wide cassettes

Sunrace are also doing a couple of 9 speed wide range cassettes (11-40t).  The CSM980 and the CSM990; It's so good to see some manufacturers stepping up and providing us with the wide range cassettes in 9 speed that Shimano and SRAM have refused to make.

Related articles:

Wide ratio 9 speed cassette

For my daughter's latest build using 26" wheels I needed to come up with a wide ratio 9 speed cassette. I ended up putting together the following:

SRAM XG 1150 10-42T 11 speed cassette

This is the 'value' option for 11 speed drive trains using the XD freehub driver.  At 394g it's not exactly a lightweight option, but certainly much less than some of the 500g+ cassettes in the cheaper Shimano ...

XTR M980 10 speed cassette

Quick facts

Spedao 11-50T 12 speed HG hub compatible cassette

Bottom 11 sprockets are machined from a single block of steel with the 50T sprocket made from aluminium to keep the weight down.

11 speed XTR cassette

Looks like Shimano are finally coming to the party with an 11-speed offroad groupset. The XTR cassette has an 11-40 range (11-13-15-17-19-21-24-27-31-35-40) which should mean its compatible with a standard freehub. Its a pity to see that Shimano ...

XTR M970 9 speed cassette

The XTR M970 9 speed cassette is the latest design in the XTR cassette range and replaces the previous XTR M950 cassette.