Discription for FOURIERS 40T 42T Teeth cog fr Shimano Sram 34/36t 10 speed 10s Cassette Sprocket:

   
Material: High Tensile A7075-T651 cnc

Module: Fouriers CR-DX004

Gear teeth: 40T /42T

One set: 1x 16T cog+ 1x 40T /42T cog, 1x long B screw to enlarge the open rage of rear derailleur
 
Weight: 63g(40T)  

Replace a cog on your sram or shimano 10-speed cassette in order to provide extra low range for your 1x drivetrain.


Work best with most medium or long Cage rear derailleurs - 2x 10 drivetrains require a long rear derailleur, 40T cog can work with some short cage rear derailleurs only, 42T cog cannot work with short cages

Compatible with most 10s cassette, will not fit on 9s cassette, as following:
40T:
Sram X5 PG-1030(11-34T,11-36T)
Sram X7 PG-1050(11-34T,11-36T)
Sram X9 PG-1070(11-34T,11-36T)
Shimano XTR M980(11-34T,11-36T)
Shimano XTR M771-10(11-34T,11-36T)
SLX HG81(11-34T,11-36T)
Sunrace(11-36T)
 

42T:
Sram X5 PG-1030(11-36T)
Sram X7 PG-1050(11-36T)
Sram X9 PG-1070(11-36T)
Shimano XTR M980(11-36T)
Shimano XTR M771-10(11-36T)
SLX HG81(11-36T)
Sunrace(11-36T)

 

The evolution of 40/42T rear sprocket. Stable and durable drivetrain. Challenge steep climbs and modify your SHIMANO cassette with the Mage SK2 40/42T sprocket. Recommended for 1x and 2x drivetrain systems. Comes with longer B-tension screw and redesigned 16T sprocket  for smoother shifting and tooth ratio. For installation take out the 15T & 17T sprocket and install the 16T between the 13T and 19T. Add the 40/42T after the largest sprocket.


Packing include: One set (one 40t/42t cog, one 16t cog and one long B screw)



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