2021 Rocky Mountain Instinct Base S
Build
650B/27.5 in × 2.4 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Rocky Mountain Instinct
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 585mm |
| Reach | 408mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 380mm |
| Top Tube Length, Effective/Horizontal HT Top | 578mm |
| Head Tube Angle | 65.3deg |
| Seat Tube Exit Angle | 76.3deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 27mm |
| Bottom Bracket Height | 326mm |
| Chainstay Length Horizontal | 428mm |
| Front-Center | 736.5mm |
| Front-Center Horizontal | 736mm |
| Wheelbase | 1164mm |
| Fork Offset/Rake | 37mm |
| Trail | 121.6mm very high |
| Mechanical Trail | 110.5mm |
| Wheel Flop | 46.2mm |
| Standover Height | 758mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 213.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 156mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 705.9mm |
| Bike Length with Tires | 1869.9mm |
| Crank Length | 170mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 150mm |
| Rear Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://resources.bikes.com/en/bikes/instinct/2021