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2018 Large SKU: BMT25968

Niner SIR 9 Mountain Bike - 2018, Large

Recommended Rider Height: 5'11" - 6'3" Size Guide
Regular price

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shipping icon $94.99 RideFast Shipping

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.

Highlights
- New front brake pads & rotor for more stopping power.
- New FSA chain for crisp shifting.
- New bottom bracket for smooth spinning.
- New shifter cable & housing, pro-tuned to optimize crisp shifting.

Master Mechanic's Notes
- Moderate paint chips on the drive side chainstay.
- Small paint chip on the inside of the non-drive side chainstay.
- Small scratches on the frame, rims, handlebar, & crank.
- Light cable rub on the head tube.

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

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.

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Specifications

Year 2018
Brand Niner
Model SIR 9
Size Large
Frame Material Steel
Drivetrain Shimano, 1x11 spd
Weight 28 lbs 2 oz
Fork RockShox Reba RL
Fork Travel 120mm
Rear Shock Travel N/A
Brakes Shimano XT M8000, Disc Brakes - Hydraulic
Shifters Shimano XT M8000, Mechanical
Rear Derailleur Shimano XT M8000
Bottom Bracket Shell Press fit
Crankset Race Face Turbine, 32t, 175mm
Cassette Shimano XT M8000, 11-48t
Handlebar Race Face Aeffect Alloy, 760mm
Headset Niner Integrated
Stem Race Face Aeffect Alloy, 35.0mm x 70mm, 6°
Seatpost KS Lev Si, 30.9mm
Seatpost Travel 150mm
Saddle Niner
Front Axle Spacing 15x110mm (Boost)
Rear Axle Spacing 12x148mm Boost
Wheelset Stan's NoTubes ZTR Arch MK3 Aluminum Tubeless Compatible, Stan's NoTubes Neo
Front Tire Maxxis Ardent EXO TR, 29" x 2.4"
Rear Tire Maxxis Ardent EXO TR, 29" x 2.25"
Tubeless Compatibility Wheels are tubeless compatible but ships with tubes installed

Geometry

Recommended Rider Height 5'11" - 6'3"
a. Effective Top Tube 627 mm
b. Seat Tube 485 mm
c. Seat Tube Angle 74°
d. Head Tube Angle 68°
e. Head Tube 125 mm
f. Stack 634 mm
g. Reach 445 mm
h. Standover Height 791 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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