2025 State Bicycle Co. 4130 Trail Carbon Rigid Fork

Design
Flat Bar, Rigid, suspension corrected
Frame
Steel
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

XS / S
S / M
M / L
XL
Stack
609mm
617mm
626mm
634mm
Reach
448mm
473mm
493mm
517mm
Stack to Reach Ratio
1.36:1
1.3:1
1.27:1
1.23:1
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
67.6deg
67.5deg
67.5deg
67.4deg
Seat Tube Angle
77.1deg
76.9deg
76.9deg
76.8deg
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
720.4mm
749.3mm
773.2mm
802.2mm
Front-Center Horizontal
718.2mm
747.2mm
771.2mm
800.2mm
Wheelbase
1141mm
1170mm
1194mm
1223mm
Fork Offset/Rake
49mm
49mm
49mm
49mm
Fork Length (On-Axis)
495mm
495mm
495mm
495mm
Trail
100.3mm
very high
101mm
very high
101mm
very high
101.8mm
very high
Mechanical Trail
92.7mm
93.3mm
93.3mm
93.9mm
Wheel Flop
35.3mm
35.7mm
35.7mm
36.1mm
Tire to Pedal Spindle
183.4mm
165 mm cranks
212.3mm
165 mm cranks
231.3mm
170 mm cranks
255.2mm
175 mm cranks
Pedal Spindle to Ground Clearance
151mm
165 mm cranks
151mm
165 mm cranks
146mm
170 mm cranks
141mm
175 mm cranks

Carbon Rigid Fork 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
1884.9mm
1913.9mm
1937.9mm
1966.9mm
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 Scale
Category Trend
Hardtail Trail MTB