2025 State Bicycle Co. 4130 Trail Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 130mm fork travel
Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
XS / S | S / M | M / L | XL | |
Stack | 628.3mm | 637.4mm | 646.5mm | 655.5mm |
Reach | 420mm | 445mm | 465mm | 490mm |
Stack to Reach Ratio | 1.5:1 | 1.43:1 | 1.39:1 | 1.34:1 |
Seat Tube Length, C-T | 380mm | 405mm | 430mm | 460mm |
Top Tube Length, Effective/Horizontal Center | 594.7mm | 622.6mm | 645.5mm | 673.3mm |
Top Tube Length, Actual C-C | 594.7mm | 622.6mm | 645.5mm | 673.3mm |
Top Tube Slope | 27deg | 24deg | 22deg | 19deg |
Head Tube Angle | 65deg | 65deg | 65deg | 65deg |
Seat Tube Angle | 74.5deg | 74.4deg | 74.4deg | 74.4deg |
Head Tube Length | 100mm | 110mm | 120mm | 130mm |
Bottom Bracket Drop | 56mm | 56mm | 56mm | 56mm |
Bottom Bracket Height | 316mm | 316mm | 316mm | 316mm |
Chainstay Length | 426.5mm | 426.5mm | 426.5mm | 426.5mm |
Chainstay Length Horizontal | 422.8mm | 422.8mm | 422.8mm | 422.8mm |
Front-Center | 737.5mm | 766.7mm | 790.9mm | 820mm |
Front-Center Horizontal | 735.4mm | 764.7mm | 788.9mm | 818.1mm |
Wheelbase | 1158.2mm | 1187.5mm | 1211.7mm | 1240.9mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Fork Length (On-Axis) | 541mm | 541mm | 541mm | 541mm |
Trail | 124.9mm very high | 124.9mm very high | 124.9mm very high | 124.9mm very high |
Mechanical Trail | 113.2mm | 113.2mm | 113.2mm | 113.2mm |
Wheel Flop | 47.8mm | 47.8mm | 47.8mm | 47.8mm |
Tire to Pedal Spindle | 200.6mm 165 mm cranks | 229.8mm 165 mm cranks | 248.9mm 170 mm cranks | 273.1mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 151mm 165 mm cranks | 151mm 165 mm cranks | 146mm 170 mm cranks | 141mm 175 mm cranks |
Base Build
XS / S | S / M | 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 | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 743.9mm | 743.9mm | 743.9mm | 743.9mm |
Bike Length with Tires | 1902.1mm | 1931.4mm | 1955.6mm | 1984.8mm |
Crank Length | 165mm | 165mm | 170mm | 175mm |
Published Sizing Recommendations
Height | 5 ft 1 in to 5 ft 5 in | 5 ft 5 in to 5 ft 10 in | 5 ft 10 in to 6 ft 1 in | 6 ft 1 in to 6 ft 5 in |
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
Hardtail Trail MTBSource:https://cdn.shopify.com/s/files/1/0232/3305/files/2025-4130-MTB-SizeSpec.pdf?v=1745262458