E*thirteen Extended Range Cog Compatible with Shimano, 40t - Blue Headset Accessories - CNC 7075 aluminum with

- CNC 7075 aluminum with asymmetrical tooth profiling and more upshift and downshift zones for consistent

Specialized Command and Giant Contact posts

120223-Q0-L

Manufacturer Part Number: BB90-24GXP

UPC: 072774624997

E*thirteen Extended Range Cog Compatible with Shimano, 40t - Blue Headset Accessories - CNC 7075 aluminum withExtended range aluminum 40t or 42t cogs to fit either Compatible with Shimano SRAM 10 speed cassettes 42t is compatible with 36t max cassettes while 40t is compatible with 34t max cassettes Remove the existing 17t and add the Extended Range cog without any additional spacers to create an 11 40t, or 11 42 10 speed cassette option Cogs come with a longer replacement B limit screw, to avoid running the derailleur with the stock screw maxed out Intended