Niner SIR 9 Large Bike - 2015 drive side Niner SIR 9 Large Bike - 2015 non-drive side Niner SIR 9 Large Bike - 2015 sticker Niner SIR 9 Large Bike - 2015 drivetrain Niner SIR 9 Large Bike - 2015 front wheel Niner SIR 9 Large Bike - 2015 cockpit Niner SIR 9 Large Bike - 2015 crank Niner SIR 9 Large Bike - 2015 detail 1 Niner SIR 9 Large Bike - 2015 detail 2 Niner SIR 9 Large Bike - 2015 detail 3
2015 Large SKU: BMT12912

Niner SIR 9 Large Bike - 2015

Recommended Rider Height: N/A Size Guide
Condition: PRE-OWNED
Regular price

return icon 30-day returns
shipping icon $94.99 RideFast Shipping

This bicycle is backed by the TPC Quality Assurance program.

This bicycle has been professionally serviced by our mechanics.

Light wear and tear from cable rub, heel rub, chain, etc.

Scratch and paint chip to chain stays

Heavy cosmetic wear to crank arms

inspection image

TPC Guarantee

This bike passed a 141-point inspection and received a full pro-tune by our Master Mechanics in our Certified Pre-Owned process. CPO bikes are pristine and ready to ride!

Learn more
returns image

30-Day Hassle-Free Returns

Shop with confidence. Every bike is covered by our 30-day satisfaction guarantee. If this bike isn’t perfect for you, get in touch and we’ll help you find the right bike.

Learn more
shipping image

RideFast Shipping

Bikes ship in our custom RideFast box, and assembly is incredibly simple. Most novice riders can assemble their bike in 5 minutes or less. The tools you need to assemble are also included.

Learn more


Year 2015
Brand Niner
Model SIR 9
Size Large
Frame Material Steel
Drivetrain SRAM, 1x11 spd
Weight 26 lbs 5 oz
Fork MRP Loop SL
Fork Travel 100mm
Rear Shock N/A
Rear Shock Travel N/A
Brakes SRAM X01, Disc Brakes - Hydraulic
Shifters SRAM X1, Mechanical
Front Derailleur N/A
Rear Derailleur SRAM X1
Crankset SRAM X9, 28t, 175 mm
Cassette SRAM XG 1175, 11spd, 10-42t
Chain KMC X11 SL
Handlebar Azonic C.F.K., 760 mm
Headset Integrated
Stem Race Face Turbine, 31.8 mm x 65mm, 6°
Seatpost Specialized Alloy, 27.2mm
Seatpost Travel N/A
Saddle WTB Volt
Front Axle Spacing 15x100mm
Rear Axle Spacing 12x142mm
Wheelset Stan's No Tubes Arch, Stan's Neo
Front Tire Maxxis Ardent, 29" x 2.4"
Rear Tire Maxxis Ardent Race, 29" x 2.2"
Tire Type Tubeless
Tubeless Compatibility Yes (rim strips and valve stem not included)

“I love this company! My beautiful bike arrived promptly, was packed brilliantly, and tuned perfectly. It was exactly as described.”

— Kari K.


“In the past month, I purchased a road bike and MTB from TPC. Very happy with the price and condition of both bikes! I was riding the bikes 10 minutes after I received them.”

— David H.

Newsletter Sign Up