Niner
Niner

Niner Sir 9 Frame 2019

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Item #: FR186E02
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Niner Sir 9 frame

Thank you SIR, may I have another!

The SIR 9 returns as an all trail dominator. Revised geometry turns the SIR 9 into a modern trail bike set to ride over or through anything that stands in the way. Ride it hard. Ride it fast. After all, it's made from a truly time-tested material that's been air hardened and heat treated. The efficient, yet compliant ride quality of the SIR 9 harkens back to a simpler time. A time without linkages and complicated shock settings. A time where all the energy you put into the pedals moves you forward.

The Classic Reynolds 853 provides a supple, comfortable ride that will carry you through long days in the saddle. Boost spacing adds improved ride characteristics as well as versatility allowing you to build up your SIR 9 with either 29" wheels for maximum roll over, or 27.5" Plus if ultimate traction and stability are your preference. Adding to the SIR 9's versatility is the ability to run either geared or single speed with Niner's eccentric BB. The redesigned bottom bracket and chainstay junction improve ride quality while allowing greater tire clearance. A hidden plate inside the chainstay yoke stiffens and strengthens to improve power transfer. Eighteen mounting points for racks, fenders, bento box, water etc. along with integrated bag mounts means this SIR 9 is ready for the long haul.

The new SIR 9 begs the rider to push their limits and to have fun doing it

Features

  • REYNOLDS 853 STEEL PROVIDES THE SUPPLE, COMFORTABLE RIDE THIS LEGENDARY MATERIAL IS KNOWN FOR.
  • COMPATIBLE WITH 29X2.5 OR 27.5X3.0 TO OFFER THE CHOICE OF MAXIMUM ROLL OVER OR ULTRA TRACTION AND STABILITY.
  • REVISED GEOMETRY IS OPTIMIZED FOR MODERN TRAIL RIDING, LONG DAYS IN THE SADDLE AND ALL AROUND GOOD TIMES.
  • INTEGRATED BAG MOUNTS INSIDE FRONT TRIANGLE FOR THE ULTIMATE ADVENTURE SEEKERS
  • BENTO BOX MOUNTS ON TOP TUBE OFFER ADDITIONAL STORAGE OPTIONS WITHIN REACH.
  • NINER BIOCENTRIC 30 COMPATIBLE FOR RIDERS WHO WANT TO KEEP IT SINGLESPEED SIMPLE
  • 148 X 12 BOOST REAR SPACING FOR IMPROVED RIDE CHARACTERISTICS AND PLUS SIZE TIRE COMPATIBILITY
SPECIFICATIONS
Frame SIR 9 Reynolds 853 steel with revised trail geometry, 12 x 148mm Boost spacing
Wheel Size 29" or 27.5" plus
Fork 120mm, tapered recommended
Headset Included No. ZS 44/56 required
Headtube Diameter Tapered 44/56
Front Derailleur 34.9 side swing, front pull required
Bottom Bracket 73mm, PF30
Seatpost 30.9mm
Seat Clamp 34.9mm
Dropout Style 12 x 148mm (Axle included)
Accessory Mounts 3 water bottle cages, racks, fenders, frame bag, bento box
Cable routing External
Intended Use Trail
Weight
-
GeometryChart
GEOMETRY (mm / inch)
Size Small Medium Large Extra Large
A: Seat Tube Length 396
15.6 		421
16.6 		485
19.1 		533
21.0
B: Effective Top Tube 595
23.4 		603
23.7 		627
24.7 		652
25.7
C: Stack 611
24.1 		620
24.4 		634
25.0 		652
25.7
D: Reach 410
16.1 		425
16.7 		445
17.5 		465
18.3
E: BB Height
0.0
0.0
0.0
0.0
F: BB Drop 52
2.0 		52
2.0 		52
2.0 		52
2.0
G: Head Tube Length 100
3.9 		110
4.3 		125
4.9 		145
5.7
H: Head Tube Angle 68.0 ° 68.0 ° 68.0 ° 68.0 °
I: Seat Tube Angle 74.0 ° 74.0 ° 74.0 ° 74.0 °
J: Standover Height 721
28.4 		739
29.1 		791
31.1 		830
32.7
K: Chainstay Length 430
16.9 		430
16.9 		430
16.9 		430
16.9
L: Wheelbase 1118
44.0 		1136
44.7 		1162
45.7 		1189
46.8
Suggested Rider Height 5'3" - 5'9"
5'8" - 6'0"
5'11" - 6'3"
6'3" - 6'7"

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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

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