2021 Rocky Mountain Instinct Base

Design
Flat Bar, Full suspension
Frame
Aluminum
Suspension
150mm fork travel, 140mm rear travel
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

S
XS
S
MD
LG
MD
XL
LG
XL
Stack
585mm
581mm
607mm
611mm
621mm
619mm
630mm
633mm
646mm
Reach
408mm
414mm
408mm
432mm
455mm
456mm
482mm
481mm
511mm
Stack to Reach Ratio
1.43:1
1.4:1
1.49:1
1.41:1
1.36:1
1.36:1
1.31:1
1.32:1
1.26:1
Seat Tube Length, C-T
380mm
355mm
Seat Tube Length, Unknown
420mm
445mm
480mm
Seat Tube Length, Effective HT Top
392mm
432mm
470mm
508mm
Top Tube Length, Effective/Horizontal HT Top
578mm
549mm
Top Tube Length, Effective/Horizontal Unknown
576mm
601mm
626mm
609mm
656mm
638mm
671mm
Top Tube Slope
20.8deg
18.9deg
16deg
Head Tube Angle
65.3deg
65.9deg
66.5deg
66.5deg
66.5deg
65.1deg
66.5deg
65.1deg
65.1deg
Seat Tube Angle
75deg
75deg
75deg
76.1deg
75deg
76.1deg
76.1deg
Seat Tube Exit Angle
76.3deg
76.9deg
Head Tube Length
100mm
90mm
95mm
100mm
110mm
95mm
120mm
110mm
125mm
Bottom Bracket Drop
27mm
19mm
30mm
30mm
30mm
43mm
30mm
43mm
43mm
Bottom Bracket Height
326mm
334mm
342mm
342mm
342mm
331.5mm
342mm
331.5mm
331.5mm
Chainstay Length
438mm
438mm
438mm
Chainstay Length Horizontal
428mm
427mm
435mm
435mm
435mm
435.9mm
435mm
435.9mm
435.9mm
Front-Center
736.5mm
706.3mm
718.6mm
744.6mm
770.6mm
775.3mm
802.6mm
806.3mm
842.2mm
Front-Center Horizontal
736mm
706mm
718mm
744mm
770mm
774.1mm
802mm
805.1mm
841.1mm
Wheelbase
1164mm
1133mm
1153mm
1179mm
1205mm
1210mm
1237mm
1241mm
1277mm
Fork Offset/Rake
37mm
37mm
51mm
51mm
51mm
46mm
51mm
45.6mm
45.6mm
Fork Length (On-Axis)
527mm
527mm
527mm
527mm
Fork Length, Unknown
150mm
150mm
150mm
Trail
121.6mm
very high
117.4mm
very high
106.1mm
very high
106.1mm
very high
106.1mm
very high
123.1mm
very high
106.1mm
very high
123.6mm
very high
123.6mm
very high
Mechanical Trail
110.5mm
107.1mm
97.3mm
97.3mm
97.3mm
111.7mm
97.3mm
112.1mm
112.1mm
Wheel Flop
46.2mm
43.7mm
38.8mm
38.8mm
38.8mm
47mm
38.8mm
47.2mm
47.2mm
Standover Height
758mm
758mm
798mm
798mm
798mm
Tire to Pedal Spindle
213.5mm
170 mm cranks
183.3mm
170 mm cranks
176.7mm
170 mm cranks
202.6mm
170 mm cranks
228.6mm
170 mm cranks
230.8mm
170 mm cranks
260.6mm
170 mm cranks
261.8mm
170 mm cranks
297.7mm
170 mm cranks
Pedal Spindle to Ground Clearance
156mm
170 mm cranks
164mm
170 mm cranks
172mm
170 mm cranks
172mm
170 mm cranks
172mm
170 mm cranks
161.5mm
170 mm cranks
172mm
170 mm cranks
161.5mm
170 mm cranks
161.5mm
170 mm cranks

Base Build

S
XS
S
MD
LG
MD
XL
LG
XL
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 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
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
2.4in
2.4in
2.4in
2.4in
2.4in
2.5in
2.4in
2.5in
2.5in
Tire Outer Diameter
705.9mm
705.9mm
743.9mm
743.9mm
743.9mm
749mm
743.9mm
749mm
749mm
Bike Length with Tires
1869.9mm
1838.9mm
1896.9mm
1922.9mm
1948.9mm
1959mm
1980.9mm
1990mm
2026mm
Crank Length
170mm

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
Source:https://resources.bikes.com/en/bikes/instinct/2021, https://resources.bikes.com/en/bikes/instinct/2020, https://www.bikes.com/en/bikes/instinct/2021, https://bikes.com/collections/instinct/products/instinct-a50-22