2025/2nd Gen Spec Bicycles GRVL Base
- Category
- Progressive Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
S | M | L | XL | |
Stack | 542.6mm | 563.4mm | 598.6mm | 627.1mm |
Reach | 374.1mm | 377.5mm | 386mm | 397.1mm |
Stack to Reach Ratio | 1.45:1 | 1.49:1 | 1.55:1 | 1.58:1 |
Seat Tube Length, Unknown | 490mm | 520mm | 550mm | 580mm |
Top Tube Length, Effective/Horizontal Center | 535mm | 550mm | 575mm | 595mm |
Top Tube Slope | 8.1deg | 7.1deg | 7.7deg | 7.4deg |
Head Tube Angle | 71deg | 71.5deg | 72deg | 72deg |
Seat Tube Angle | 73.5deg | 73deg | 72.5deg | 72.5deg |
Head Tube Length | 120mm | 140mm | 175mm | 205mm |
Bottom Bracket Drop | 70mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 281mm | 281mm | 281mm | 281mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 424.3mm | 424.3mm | 424.3mm | 424.3mm |
Front-Center | 593.8mm | 599.4mm | 614.5mm | 634.5mm |
Front-Center Horizontal | 584.6mm | 590.2mm | 605.3mm | 625.5mm |
Wheelbase | 1008.9mm | 1014.5mm | 1029.6mm | 1049.8mm |
Fork Offset/Rake | 50mm | 50mm | 50mm | 50mm |
Fork Length (On-Axis) | 397mm | 397mm | 397mm | 397mm |
Trail | 68mm high | 64.7mm mid/neutral | 61.5mm mid/neutral | 61.5mm mid/neutral |
Mechanical Trail | 64.3mm | 61.4mm | 58.5mm | 58.5mm |
Wheel Flop | 20.9mm | 19.5mm | 18.1mm | 18.1mm |
Standover Height | 776.4mm | 793.4mm | 833.4mm | 863.9mm |
Tire to Pedal Spindle | 72.8mm 170 mm cranks | 78.4mm 170 mm cranks | 93.5mm 170 mm cranks | 111mm 172.5 mm cranks |
Pedal Spindle to Ground Clearance | 111mm 170 mm cranks | 111mm 170 mm cranks | 111mm 170 mm cranks | 108.5mm 172.5 mm cranks |
Base Build
S | M | L | XL | |
Wheel Size | 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 | 40mm | 40mm | 40mm | 40mm |
Tire Width Max | 50mm | 50mm | 50mm | 50mm |
Tire Outer Diameter | 702mm | 702mm | 702mm | 702mm |
Bike Length with Tires | 1710.9mm | 1716.5mm | 1731.6mm | 1751.8mm |
Crank Length | 170mm | 170mm | 170mm | 172.5mm |
Handlebar Width | 38mm | 40mm | 40mm | 42mm |
Stem Length | 100mm | 100mm | 110mm | 110mm |
Stem Angle | 6deg | 6deg | 6deg | 6deg |
Published Sizing Recommendations
Height | 155 cm to 164 cm | 165 cm to 173 cm | 174 cm to 183 cm | 184 cm to 194 cm |
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
Progressive GravelSource:https://specbicycles.com/grvl/