2020 Rocky Mountain Thunderbolt Alloy 50 Neutral L
Build
650B/27.5 in × 2.4 in
Insights
Somewhat aggressive stack and reach vs trend of full-suspension trail mtb bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 607mm |
| Reach | 459mm |
| Stack to Reach Ratio | 1.32:1 |
| Seat Tube Length, C-T | 471mm |
| Top Tube Length, Effective/Horizontal Unknown | 626mm |
| Head Tube Angle | 66.6deg |
| Effective Seat Tube Angle, Unknown | 74.6deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 17mm |
| Bottom Bracket Height | 336mm |
| Chainstay Length Horizontal | 425mm |
| Front-Center | 763.2mm |
| Front-Center Horizontal | 763mm |
| Wheelbase | 1188mm |
| Fork Offset/Rake | 37mm |
| Trail | 112.4mm very high |
| Mechanical Trail | 103.2mm |
| Wheel Flop | 41mm |
| Standover Height | 802mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 240.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 166mm |
Alloy 50 Neutral Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 705.9mm |
| Bike Length with Tires | 1893.9mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | Unknown |
| Suspension Sag | 25% |
| Frame Material | Aluminum |
| Fork Material | N/A |
| Brake Type | Disc |
Source:https://www.bikes.com/en/bikes/thunderbolt/2020