Skip to main content
      Free shipping on orders over $100.

Niner SIR 9 4-Star

Niner SIR 9 4-Star
Please select options
This item is not permitted to be shipped, however it can be purchased online and picked up at one of our locations at your convenience. We gladly ship applicable orders anywhere within the Continental United States. Please note that any in-store pickup items will require that the Photo ID, Credit Card used for the purchase, and Purchaser be present for verification upon pickup.


The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry, and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

This 4-Star SIR 9 is dressed for success with a light, stiff FOX 34 120mm travel suspension fork, Shimano XT drivetrain, and DT Swiss M1700 wheels. No excuses—get out and ride!

- DT Swiss M1700 wheels
- FOX 34 SC Float Factory EVOL FIT 4 fork w/Kashima coat, 120mm travel
- KS LEV Si dropper post


Frame Hand welded Reynolds 853 steel; external cable routing; integrated bottle, bag, rack and fender mounts; 12x148 thru axle
Fork Fox 34 SC Float Factory EVOL Fit4, 3 Position w/Adj, Kashima Coat, 120mm, 110x15mm, 44mm Offset
Wheels Front: DT Swiss XM 1700 Spline 30, Center Lock 110x15mm
Rear: DT Swiss XM 1700 Spline 30, Center Lock 148x12mm
Tires Front: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.6"
Rear: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.35"
Bottom Bracket Raceface PF30
Crankset Raceface NEXT R Carbon 12sp, 32T
Shifters Shimano XT M8100 12sp I-Spec EV
Rear Derailleur Shimano XT M8100 SGS 12sp
Cassette/Freewheel Shimano XT M8100 12sp, 10-51T
Chain Shimano XT M8100 w/Quicklink
Brakes Shimano XT M8100, Metal Pad w/Fin
Rotors 180/160 MT800 Rotors
Brake Levers Shimano XT M8100
Handlebars Race Face NEXT R 800mm Wide, 35mm Rise, 35mm Clamp
Tape/Grips Niner Grrrips L/O Soft Compound
Stem Race Face Turbine R 40mm, 35mm Clamp
Headset Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
Seatpost KS LEV Si (XS/S-100mm, M/L/XL-150mm)
Saddle Niner Custom TR With CrN-Ti Rails, Printed Niner Graphic
Pedals Sold separately
Accessories & Extras Stans No Tubes Sealant (2 x 2oz Bottles)

* Subject to change without notice.

Part Numbers

Option UPC MPN
Cement/Black/Copper / Small 031492103207 03-149-21-03-20
Cement/Black/Copper / Medium 031492104204 03-149-21-04-20
Cement/Black/Copper / Large 031492105201 03-149-21-05-20
Cement/Black/Copper / X-Large 031492106208 03-149-21-06-20