Niner SIR 9 2-Star - 2018

Niner SIR 9 2-Star
Slate Blue/Orange
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Availability on this item may be limited. Please call 480-744-5940 or email to place an order. Thank you!


Take charge of your ride with this Reynolds 853 steel frame designed around Niner's [R]evolution trail geometry. Ride it hard. Ride it fast. After all, it's made from a truly time-tested material that's been air hardened and heat treated. The efficient, yet compliant ride quality of the SIR 9 hearkens back to a simpler time. A SRAM GX Eagle 1x12 drivetrain and Guide R brakes provide wide-range gearing with ample stopping power, and a Fox 34 Float 120mm fork smooths the trail so you can rally till your heart's content. Niner knew you'd also enjoy loading this steel steed for a weekend of bikepacking adventure so they added 18 mounting points to accommodate those needs. However you choose to use the SIR 9, its simple design will inspire a renewed desire for exploration and reward you with that comfortable ride only a high-grade steel hardtail can supply.


Frame SIR 9, Reynolds 853 steel
Fork Fox 34 Float Rhythm Grip Evol, Sweep adjust, 120mm
Headset Niner Internal ZS SHIS ZS44/28.6|ZS56/40
Axles Front: 110 x 15mm
Rear: 148 x 12mm
Rims/Wheels Niner Alloy 29
Tires Front: Maxxis Ardent F60 SC 29 x 2.4
Rear: Maxxis Ardent F60 SC 29 x 2.25
Crankset SRAM Stylo 7k Eagle
Chainrings 32T
Bottom Bracket SRAM (PF30)
Chain SRAM GX Eagle 12sp
Rear Derailleur SRAM GX Eagle 12sp
Cassette/Rear Cogs SRAM Eagle XG 1275, 10-50t
Shifters SRAM GX Eagle 12sp
Handlebars Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
Tape/Grips Niner Grips L/O Nylon Flanged
Stem Race Face Aeffect R 50mm, 35mm Clamp
Brake Levers SRAM Guide R
Brakes SRAM Guide R, 180/160mm G2CS rotors
Saddle Niner Custom TR with Cr-Mo Rails, Printed Niner Graphic
Seat Post KS Lev SI

Part Numbers

Option MPN
Slate Blue/Orange / Small 03-129-18-03-26
Slate Blue/Orange / Medium 03-129-18-04-26
Slate Blue/Orange / Large 03-129-18-05-26
Slate Blue/Orange / X-Large 03-129-18-06-26