2021 Niner Bikes RLT 9 Steel Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

47cm
50cm
53cm
56cm
59cm
62cm
Stack
543mm
558mm
579mm
597mm
615mm
636mm
Reach
365mm
367mm
375mm
384mm
394mm
406mm
Stack to Reach Ratio
1.49:1
1.52:1
1.54:1
1.55:1
1.56:1
1.57:1
Seat Tube Length, C-T
470mm
500mm
530mm
560mm
590mm
620mm
Top Tube Length, Effective/Horizontal HT Top
510mm
525mm
545mm
565mm
585mm
605mm
Top Tube Slope
10.4deg
8.7deg
7.7deg
6.4deg
5.1deg
4.3deg
Head Tube Angle
70deg
70.5deg
71deg
71.5deg
72deg
72.5deg
Seat Tube Angle
74.5deg
74deg
73.5deg
73deg
73deg
72.5deg
Head Tube Length
110mm
125mm
145mm
165mm
185mm
205mm
Bottom Bracket Drop
75mm
75mm
75mm
70mm
70mm
70mm
Bottom Bracket Height
276mm
276mm
276mm
281mm
281mm
281mm
Chainstay Length
435mm
435mm
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
428.5mm
428.5mm
428.5mm
429.3mm
429.3mm
429.3mm
Front-Center
583mm
589mm
600mm
611mm
626mm
635mm
Front-Center Horizontal
579.5mm
586.5mm
596.5mm
608.7mm
623.7mm
632.7mm
Wheelbase
1008mm
1015mm
1025mm
1038mm
1053mm
1062mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
45mm
45mm
Trail
79.9mm
high
76.6mm
high
73.3mm
high
70mm
high
66.7mm
high
63.5mm
mid/​neutral
Mechanical Trail
75.1mm
72.2mm
69.3mm
66.4mm
63.5mm
60.6mm
Wheel Flop
25.7mm
24.1mm
22.6mm
21.1mm
19.6mm
18.2mm
Standover Height
735mm
757mm
781mm
809mm
835mm
860mm
Tire to Pedal Spindle
62mm
170 mm cranks
68mm
170 mm cranks
79mm
170 mm cranks
90mm
170 mm cranks
105mm
170 mm cranks
114mm
170 mm cranks
Pedal Spindle to Ground Clearance
106mm
170 mm cranks
106mm
170 mm cranks
106mm
170 mm cranks
111mm
170 mm cranks
111mm
170 mm cranks
111mm
170 mm cranks

Base Build

47cm
50cm
53cm
56cm
59cm
62cm
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
40mm
40mm
40mm
40mm
40mm
40mm
Tire Width Max
50mm
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
702mm
702mm
702mm
702mm
702mm
702mm
Bike Length with Tires
1710mm
1717mm
1727mm
1740mm
1755mm
1764mm

Published Sizing Recommendations

Height
4 ft 11 in
to
5 ft 3 in
5 ft 2 in
to
5 ft 6 in
5 ft 5 in
to
5 ft 9 in
5 ft 8 in
to
6 ft 0 in
5 ft 11 in
to
6 ft 3 in
6 ft 2 in
to
6 ft 6 in

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
All-road/Gravel
Source:https://ninerbikes.com/products/rlt-9-steel