Niner Bikes S.I.R. 9 29er Hardtail

4.75/5 (68 Reviews)
MSRP : $999.00

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Product Description

  • Custom engineered steel tubeset for ideal function and ride quality
  • Custom bent double-butted Reynolds 853 DZB down tube
  • 44mm Reynolds 631 head tube allows use of tapered or 1-1/8” forks
  • Niner BioCentric II Bottom bracket system and removable down tube cable stops allows clean singlespeed or geared setup
  • 142x12 rear Maxle
  • Post mount brake bosses between seat stay and chainstay
  • Investment cast stay bridges and dropouts

User Reviews

Overall Rating:5
Value Rating:4
Submitted by rob1208lv a Cross Country Rider

Date Reviewed: May 3, 2012

Strengths:    strong, a work of art, easy to change from gears to SS

Weaknesses:    kind of heavy (but its steel), EBB can be a pain sometimes, little pricey

Bottom Line:   
I currently have mine set up SS. After the first ride my EEB came loose, I followed all the recommended install instructions and haven't had a problem sense. I was riding a Jabberwocky prior, that bike was stable, but the SIR9 is easier to throw around on switchbacks and the steel feels more plush, and nimble, Plus I could never run gears on my Jabber for bike packing. I also Had a Niner AIR9 that bike was fast, but it bounced me around all over the place, I prefer the Steel. The Niners Geo seems to fit me the best.

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Favorite Trail:   goosberry mesa

Price Paid:    $500.00

Purchased At:   Las Vegas Cyclery

Similar Products Used:   Vassago JabberWocky, Niner EMD, Niner AIR9

Bike Setup:   Single speed fully rigid carbon fork and seat post