NINER ENCYCLOPEDIA
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SPECIFICATION & SETUP GUIDE
22
: Updated: SEPT 5, 2012
GEOMETRY & SPECIFICATIONS: S.I.R. 9
(traditional headtube/dropouts, discontinued)
S.I.R. 9
UNITS
A - TT l
ENGTH
B - S
EA
T
TUBE
l
ENGTH
C -
CHAINST
Ay l
ENGTH
D -
FR
ONT
CENTER
E -
WHEE
lBASE
F - BB
DR
O
p
G -
HEAD
TUBE
l
ENGTH
H -
HEAD
TUBE
ANG
lE
I -
SEA
T
TUBE
ANG
lE
J - S
TANDO
v
ER
HEIGHT
K - R
EA
CH
l - S
TA
CK
FORK (MM)*
80
100
80
100
80
100
80
100
80
100
80
100
80
100
80
100
80
100
SM
MM
587
590
393
445
642
650
1073 1083
60
52
90
71.5
70.5
74.0
73.0
706
711
410
402
608
615
MD
MM
603
606
418
445
654
659
1085 1091
60
52
100
72.0
71.0
74.0
73.0
728
732
426
415
620
626
LG
MM
622
626
483
445
674
678
1104 1111
60
52
110
72.0
71.0
74.0
73.0
780
786
442
431
629
637
XL
MM
641
645
546
445
693
698
1124 1130
60
52
130
72.0
71.0
74.0
73.0
832
838
456
444
648
656
SM
INCH
23.1
23.2
15.5
17.5
25.3
25.6
42.2
42.6
2.4
2.0
3.5
71.5
70.5
74.0
73.0
27.8
28.0
16.1
15.8
23.9
24.2
MD
INCH
23.7
23.9
16.5
17.5
25.7
25.9
42.7
43.0
2.4
2.0
3.9
72.0
71.0
74.0
73.0
28.7
28.8
16.8
16.3
24.4
24.6
LG
INCH
24.5
24.6
19.0
17.5
26.5
26.7
43.5
43.7
2.4
2.0
4.3
72.0
71.0
74.0
73.0
30.7
30.9
17.4
17.0
24.8
25.1
XL
INCH
25.2
25.4
21.5
17.5
27.3
27.5
44.3
44.5
2.4
2.0
5.1
72.0
71.0
74.0
73.0
32.8
33.0
18.0
17.5
25.5
25.8
*Geometry measurements are shown for 80mm and 100mm travel forks.
** Geometry measurements are shown for BB in line with seat tube, BioCentric will change geometry depending on position.
S.I.R. 9 SpECIFICATIONS & COMpATIBIlITy
73mm BB width (with BioCentric installed)
BioCentric is compatible with external bearing cranksets only
27.2mm seat post size, 400mm length recommended
28.6mm front derailleur, low mount, bottom pull.
29.6mm seat collar size
Traditional 1-1/8” external bearing headset (not included) Cane Creek standard description: EC34/28.6|EC34/30
Small, medium, large and XL have two bottle mounts inside the front triangle
Replaceable derailleur hanger or SS insert
135mm QR rear spacing
Can fit up to a 2.4” tire (tire size varies by brand, some tires may not fit)
Compatible with standard 3x chainring systems
SRAM recommended 2x front chainring configs: 26/39 or lower
SHIMANO XT recommended 2x front chainring configs: 28/40 or lower
We do not recommend the use of 2x XTR cranks because both the 40T version (48.8mm chain line) and the 38T version (46.6mm chain line) position the large chainring in a way that it
may contact the frame
