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

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TPC Guarantee

Every bike receives our white glove, Certified Pre-Owned treatment, including a full pro-tune by our Master Mechanics in Louisville, CO. All CPO bikes are pristine and rolling beautifully before we pack and ship to your door.

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141-Point Inspection

This bike passed our 141-point inspection to qualify to be a Certified Pre-Owned bike. It's free of structural damage and is in excellent cosmetic shape.

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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 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.

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