Niner SIR 9 3-Star Mountain Bike - 2020, Large drive side Niner SIR 9 3-Star Mountain Bike - 2020, Large non-drive side Niner SIR 9 3-Star Mountain Bike - 2020, Large sticker Niner SIR 9 3-Star Mountain Bike - 2020, Large drivetrain Niner SIR 9 3-Star Mountain Bike - 2020, Large front wheel Niner SIR 9 3-Star Mountain Bike - 2020, Large cockpit Niner SIR 9 3-Star Mountain Bike - 2020, Large crank Niner SIR 9 3-Star Mountain Bike - 2020, Large detail 1
2020 Large SKU: BMT18381

Niner SIR 9 3-Star Mountain Bike - 2020, Large

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

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shipping icon $94.99 RideFast Shipping

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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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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 2020
Brand Niner
Model SIR 9 3-Star
Size Large
Frame Material Steel
Drivetrain Shimano, 1x12 spd
Weight 29 lbs 1 oz
Fork Fox 34 Float Performance Elite Series FiT4
Fork Travel 120mm
Rear Shock N/A
Rear Shock Travel N/A
Brakes Shimano XT M8100, Disc Brakes - Hydraulic
Shifters Shimano XT M8100, Mechanical
Front Derailleur N/A
Rear Derailleur Shimano XT M8100
Crankset Race Face Turbine Alloy, 32t, 175 mm
Cassette Shimano SLX M7100, 12spd, 10-51t
Chain Shimano
Handlebar Race Face Aeffect R Alloy, 780 mm
Headset Niner
Stem Race Face Aeffect R Alloy, 35.0 mm x 40mm, 0°
Seatpost KS LEV SI Dropper, 30.9mm
Seatpost Travel 150mm
Saddle Niner Custom TR w/ Cr-Mo Rails
Front Axle Spacing 15x110mm Boost (Thru-Axle)
Rear Axle Spacing 12x148mm Boost (Thru-Axle)
Wheelset DT Swiss M 1900 Spline 30 Aluminum Tubeless, DT Swiss Disc
Front Tire Maxxis Minion DHF 3C Maxx Terra EXO TR, 29" x 2.5"
Rear Tire Specialized Fast Trak Control Gripton 2Bliss, 29" x 2.3"
Tire Type Tubeless
Tubeless Compatibility Bike ships tubeless

Geometry

Recommended Rider Height 5'11" - 6'3"
a. Effective Top Tube 627 mm
b. Seat Tube 485 mm
c. Seat Tube Angle 74.0°
d. Head Tube Angle 68.0°
e. Head Tube 125 mm
f. Stack 634 mm
g. Reach 445 mm
h. Standover Height 791 mm
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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