2015 Rocky Mountain Thunderbolt 750
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Suspension
- 120mm fork travel, 120mm rear travel
- Features
- Disc brake
Somewhat aggressive 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 aggressive 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 aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
XS | S | M | L | XL | |
Stack | 544mm | 553mm | 562mm | 572mm | 586mm |
Reach | 376mm | 398mm | 420mm | 443mm | 469mm |
Stack to Reach Ratio | 1.45:1 | 1.39:1 | 1.34:1 | 1.29:1 | 1.25:1 |
Seat Tube Length, C-T | 381mm | 419mm | 457mm | 483mm | 521mm |
Top Tube Length, Effective/Horizontal HT Top | 540mm | 565mm | 590mm | 615mm | 645mm |
Top Tube Slope | 20.3deg | 16.3deg | 12.7deg | 10.6deg | 8deg |
Head Tube Angle | 67.2deg | 67.2deg | 67.2deg | 67.2deg | 67.2deg |
Seat Tube Angle | 73.7deg | 73.7deg | 73.7deg | 73.7deg | 73.7deg |
Head Tube Length | 100mm | 110mm | 120mm | 130mm | 145mm |
Bottom Bracket Drop | 25.2mm | 25.2mm | 25.2mm | 25.2mm | 25.2mm |
Bottom Bracket Height | 325.2mm | 325.2mm | 325.2mm | 325.2mm | 325.2mm |
Chainstay Length | 422mm | 422mm | 422mm | 422mm | 422mm |
Chainstay Length Horizontal | 421.3mm | 421.3mm | 421.3mm | 421.3mm | 421.3mm |
Front-Center | 652.2mm | 679.2mm | 705.2mm | 731.2mm | 763.2mm |
Front-Center Horizontal | 651.8mm | 678.8mm | 704.8mm | 730.8mm | 762.8mm |
Wheelbase | 1073mm | 1100mm | 1126mm | 1152mm | 1184mm |
Fork Offset/Rake | 53.2mm | 54.3mm | 54.5mm | 53.4mm | 53.5mm |
Trail | 89.6mm very high | 88.4mm very high | 88.2mm very high | 89.4mm very high | 89.3mm very high |
Mechanical Trail | 82.6mm | 81.5mm | 81.3mm | 82.4mm | 82.3mm |
Wheel Flop | 32mm | 31.6mm | 31.5mm | 31.9mm | 31.9mm |
Standover Height | 696mm | 696mm | 696mm | 696mm | 696mm |
Tire to Pedal Spindle | 131.8mm 170 mm cranks | 158.8mm 170 mm cranks | 184.8mm 170 mm cranks | 210.8mm 170 mm cranks | 242.8mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 155.2mm 170 mm cranks | 155.2mm 170 mm cranks | 155.2mm 170 mm cranks | 155.2mm 170 mm cranks | 155.2mm 170 mm cranks |
750 Build
XS | S | M | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.3in | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Outer Diameter | 700.8mm | 700.8mm | 700.8mm | 700.8mm | 700.8mm |
Bike Length with Tires | 1773.8mm | 1800.8mm | 1826.8mm | 1852.8mm | 1884.8mm |
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 Cross-country MTBSource:https://www.bikes.com/en/bikes/thunderbolt/2015