Honda TRX420FPM Owner's Manual page 224

Specifications
Power Transmission
primary reduction
secondary reduction
final reduction
transmission ratio
final drive
Chassis & Suspension
caster
trail
tyre size, front
tyre size, rear
tyre pressure,
front & rear (cold)
Technical Information
216
front (Except TRX420TM)
rear
1st
2nd
3rd
4th
5th
reverse
6.34°
...TRX420TM
3° ...TRX420FM
TRX420FPM
25.1 mm (0.99 in)
9.0 mm (0.35 in)
AT24 × 8-12
AT24 × 10-11
front:
25 kPa (3.6 psi)
30 kPa (4.4 psi)
rear:
25 kPa (3.6 psi)
...TRX420TM
...TRX420FM
TRX420FPM
★★ MAXXIS M977
★★ MAXXIS M978
...TRX420TM
TRX420FM
...TRX420FPM
2.103
1.818
3.231
3.154
3.857
2.235
1.571
1.178
0.848
4.831
shaft