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2011 Medium SKU: BMT22391

Niner SIR 9 Single Speed Mountain Bike - 2011, Medium

Regular price

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About Niner

Niner Bicycles is committed to dirt, so MTB and gravel are their only loves. Niner was early in the 29er game (get it?), and they’re still following that groundbreaking spirit today.

Upgrades
- New front & rear rotors to brake with confidence.
- New bottom bracket for smooth spinning.
- New SRAM Level brake levers.

Master Mechanic's Notes
- Light wear and tear from cable rub, heel rub & chain.
- Light scuff on the chainstays & non-drive side down tube.
- Small paint chip on the drive-side of top tube & seatstay.

About Niner

Niner Bicycles is committed to dirt, so MTB and gravel are their only loves. Niner was early in the 29er game (get it?), and they’re still following that groundbreaking spirit today.
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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!

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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.

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RideFast Shipping

Assemble your bike in 15 minutes or less! Our bikes ship in our RideFast box for speed and safety. All tools you need to assemble are included.

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Specifications

Year 2011
Brand Niner
Model SIR 9
Size Medium
Frame Material Steel
Drivetrain , 1x1 spd
Weight 24 lbs 13 oz
Fork FOX Factory Series 32 FLOAT
Fork Travel 120mm
Rear Shock Travel N/A
Brakes SRAM Level, Disc - Hydraulic
Bottom Bracket Shell Threaded
Crankset Truvativ GXP Carbon, 32t, 175mm
Cassette Niner, 20t
Chain SRAM
Handlebar FSA SL-K Carbon, 670mm
Headset Chris King
Stem FSA OS 99 Alloy, 31.8mm x 100mm, 6°
Seatpost Crank Brothers Cobalt 3 Alloy, 27.2mm
Saddle Specialized Power
Front Axle Spacing 9x100mm (Quick Release)
Rear Axle Spacing 10x135mm
Wheelset Easton XC One 29 Aluminum Clincher, Easton XC
Front Tire Vittoria Morsa Tubeless Ready, 29" x 2.3"
Rear Tire Vittoria Morsa Tubeless Ready, 29" x 2.3"
Tire Type Tubeless
Tubeless Compatibility Wheels are not tubeless compatible

Geometry

Recommended Rider Height 5'6" - 5'10"
a. Effective Top Tube 603 mm
b. Seat Tube 419 mm
c. Seat Tube Angle 73°
d. Head Tube Angle 72°
e. Head Tube 100 mm
f. Stack N/A
g. Reach N/A
h. Standover Height 728 mm
i. Saddle Height Range N/A
VIEW SIZING GUIDE
QUALITY YOU CAN TRUST

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

— Kari K.

OVER 1,500 FIVE-STAR REVIEWS

“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.

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