2021 Rocky Mountain Instinct Base XL
Build
700C/29 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
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Geometry
| Stack | 630mm |
| Reach | 482mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, Effective HT Top | 508mm |
| Top Tube Length, Effective/Horizontal Unknown | 656mm |
| Head Tube Angle | 66.5deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 30mm |
| Bottom Bracket Height | 342mm |
| Chainstay Length Horizontal | 435mm |
| Front-Center | 802.6mm |
| Front-Center Horizontal | 802mm |
| Wheelbase | 1237mm |
| Fork Offset/Rake | 51mm |
| Fork Length (On-Axis) | 527mm |
| Trail | 106.1mm very high |
| Mechanical Trail | 97.3mm |
| Wheel Flop | 38.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 260.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 172mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1980.9mm |
| 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/2020