2025 State Bicycle Co. 4130 Trail Base M / L
Build
700C/29 in × 2.4 in
Insights
Somewhat upright stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of State Bicycle Co. 4130 Trail
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 646.5mm |
| Reach | 465mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, C-T | 430mm |
| Top Tube Length, Effective/Horizontal Center | 645.5mm |
| Top Tube Length, Actual C-C | 645.5mm |
| Top Tube Slope | 22deg |
| Head Tube Angle | 65deg |
| Seat Tube Angle | 74.4deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 56mm |
| Bottom Bracket Height | 316mm |
| Chainstay Length | 426.5mm |
| Chainstay Length Horizontal | 422.8mm |
| Front-Center | 790.9mm |
| Front-Center Horizontal | 788.9mm |
| Wheelbase | 1211.7mm |
| Fork Offset/Rake | 44mm |
| Fork Length (On-Axis) | 541mm |
| Trail | 124.9mm very high |
| Mechanical Trail | 113.2mm |
| Wheel Flop | 47.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 248.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 146mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1955.6mm |
| Crank Length | 170mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Unknown |
Published Sizing Recommendations
| Height | 5 ft 10 in to 6 ft 1 in |
Source:https://cdn.shopify.com/s/files/1/0232/3305/files/2025-4130-MTB-SizeSpec.pdf?v=1745262458