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Niner S.I.R. 9 SS (2012)

General

Product Category
Brand Niner
ModelS.I.R. 9 SS
SizeS / M / L / Xl
ColorArctic White, Hot Tamale

Specific

Bottom bracketNiner BioCentric EBB system for easy singlespeed set up; 73mm BB width
Features
  • Proprietary steel tubeset for ideal function and ride quality
  • Custom-bent double-butted Reynolds 853 DZB downtube 
  • 44mm Reynolds 631 head tube allows use of tapered or 1–1/8” forks
  • Niner Bio-Centric II Bottom bracket system and removable downtube cable stops for clean singlespeed or geared setup
  • 142 x 12mm rear Maxle
  • Post mount brake bosses between seatstay and chainstay
  • Investment cast stay bridges and dropouts 
    • Fork typeOptimized for 80 to 100mm suspension forks
    Frame typeCustom drawn, 29er specific Reynolds 853 tubeset
    Front derailleur28.6mm front derailleur, low-mount, top swing, bottom pull
    HeadsetStandard 1.125” external bearing headset (not included)
    Recommended forXC
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