ZTTO CSMXXL10 Speed 11-42T Wide Ratio MTB Mountain Bike Bicycle Part Cassette Sprocket with Extended B-Screw and 3mm Allen Key


Feel hard to climb the mountain or want to modify your old 10 speed group set to 1X system?

Our product may be the cheapest wide ratio modify solution you can find in the market. The only thing we sacrifice here is the weight, if you don’t sensitive to the weight, our product may be your best choice. 


SRAM 10 Speed MTB derailleurs are generally compatible (check its chain wrap capability), Shimano derailleurs require a longer B-tension screw.

Our package include a stainless steel B-screw and a 3 mm Allen key to install it. So you don’t need to buy them from other seller. Fits on Shimano or Sram compatible freehubs. 

SRAM / Shimano mid or long cage derailleur only (check its specs for chain wrap capability). For Shimano HG splined freehubs.

Color: Champagne Silver 

Size: 11-42t

Cogs: 11, 13, 15, 18, 21, 24, 28, 32, 36, 42 

MATERIAL: High Tensile Steel

FINISH:Satin Nickel

WEIGHT: 526g. (11-42t)


New in box package 25mm Stainless Steel B-screw*1 3mm Allen Key*1 11-42T Cassette (Champagne Silver)*1

Product Features

  • Compatibility: Only for SRAM / Shimano mid or long cage derailleur
  • Durable full steel design. Weight: 526 g (11-42t); For Shimano HG splined freehubs
  • Cogs 11-42t: 11, 13, 15, 18, 21, 24, 28, 32, 36, 42
  • 10 Speed Wide Ratio Cassette with B-screw and 3mm Allen Key
  • Super Affordable and Easy to Install