Browsing Cassettes, Freewheels, Cogs

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Absolute Black Cogs & Singlespeed Conversions
Absolute Black Cassette Cog
  • Great solution for riders who require one lower gear on steep climbs
  • Only fits Shimano 10sp 11-36t cassettes (XTR-M980, XT-M771 and SLX-HG81)
  • Requires removal of the 17t cog and spacer from existing cassette
  • By using the optional Absolute Black lockring the 11t cog can be removed keeping the 17t cog. Lockring sold separately, use AI-4091
  • Use of a long cage derailleur is recommended, generally a medium cage will work, do not attempt to use a short cage while running the 40t cog
  • May require a longer 10sp chain
  • Designed in UK, manufactured in Poland
 
item # teeth version color weight in stock?
  AI-4090 40t Shimano black 77g YES
ACS Freewheels
Atomlab Cogs & Singlespeed Conversions
BOX Cassettes
BOX Prime 9 Cassette   coming soon
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BOX Two 11sp Cassette    
2 choices
BOX Two DH Cassette    
1 choice
ConneX by Wippermann Cogs & Singlespeed Conversions

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