Honda CRF50F 2009 Owner's Manual page 143

Power Transmission
Drive chain
freeplay
New chain length
Used chain service
limit length
9/16 1 in −
(15 25 mm) −
38.5 in (978 mm)
distance between a
span of 77 pins
39.3 in (997 mm)
distance between a
span of 77 pins
Chassis & Suspension
Caster
Trail
Tire size, front
Tire size, rear
Tire type
Tire pressure, front
(cold)
Tire pressure, rear
(cold)
Suspension, front
Suspension, rear
Technical Information
Specifications
25°00'
1.3 in (32 mm)
2.50-10 33J
2.50-10 33J
bias-ply, tube
15 psi
(100 kPa , 1.00 kgf/cm )
18 psi
(125 kPa , 1.25 kgf/cm )
3.79 in (96.3 mm)
cushion stroke
3.4 in (87 mm)
axle travel
2.8 in (70 mm)
axle travel
135