2021 Rocky Mountain Instinct Base
- Category
- Full-suspension Trail MTB
- 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 ScaleCategory Trend
Full-suspension Trail MTBSource: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