ToolsChain Care ProductsWhere to buyDerailleurHub Gear / Single speedConnectorsChainringsSprocketsCassettesDerailleurHub Gear / Single speedConnectorsChainrings / Drive sprocketsSprocketsCassettesKMC GO CHAIN WAX10,000km+3,500km+eCargo1X-Series12-SpeedCoatingsEPT CoatingDLC TechKMC Nukeproof MTB Racing TeamAthletes and TeamsWhat we stand forHistoryJustdiggitSales PartnersBecoming a DealerKMC on MyagiWarrantyHow to Treat a New ChainCare of Waxed ChainsCare of Oiled ChainsTechnical MaintenanceFake ChainsGlossaryDownloads
  • KMC GO CHAIN WAX
  • Where to buy
  • KMC Nukeproof MTB Racing Team
  • Contact
  • Dealer / Media
  • deen
Logo KMC
 

BCD104, 38T, 11/128“ Narrow-Wide, AL7075 T6

  • For cranksets with spider 104 BCD
  • AL 7075 T6
  • CNC-milled
  • Maximum efficiency which saves battery
  • Perfectly matched to KMC chains
  • e1 / e8 / e9 / e10 / e11 / e12
  • Recommended chain: e1EPT
  • Made in Europe
  • Art.nr.: BFCR21938
  • Size: 1/2" X 11/128"
    • BCD104, 38T, 11/128“ Narrow-Wide, SteelBCRNW1043801
    • BCD104, 34T, 11/128“ Narrow-Wide, SteelBCRNW1043401

    Related products

    • e1 EPTDesigned for the use on powerful e-bikes, the e-Series chains are also a high quality choice for classic bikes with a great durability and shifting performance. Highly effective EPT antirust coating and part of KMC's 3,500km+ programme.
    • Shimano Narrow, 20T20 teeth for narrow chains (3/32“), hardened chromoly steel. With a narrow KMC chainring and chain part of the 3,500km+ programme.
    • Enviolo Narrow, 18T16 teeth sprocket for narrow chains (3/32“), hardened chromoly steel. In combination with a narrow KMC chainring and chain part of the 3,500km+ programme.
    ToolsChain Care ProductsWhere to buyDerailleurHub Gear / Single speedConnectorsChainringsSprocketsCassettesDerailleurHub Gear / Single speedConnectorsChainrings / Drive sprocketsSprocketsCassettesKMC GO CHAIN WAX10,000km+3,500km+eCargo1X-Series12-SpeedCoatingsEPT CoatingDLC TechKMC Nukeproof MTB Racing TeamAthletes and TeamsWhat we stand forHistoryJustdiggitSales PartnersBecoming a DealerKMC on MyagiWarrantyHow to Treat a New ChainCare of Waxed ChainsCare of Oiled ChainsTechnical MaintenanceFake ChainsGlossaryDownloads
    • Where to buy
    • Warranty
    • Contact
    • Legal information
    • Privacy policy
    ©2026 KMC Chain Europe NV · All rights reserved
    • Legal information
    • Privacy policy