Honda VTX1300C VTX 2004 Owner's Manual page 229

Quick Reference
Tires
Tire Pressure
(cold)
Spark Plugs
Fuses
Final Drive Oil
Quick Reference
Front: 110/90 19M/C 62H
DUNLOP F24G
170/80 15M/C 77H
Rear:
DUNLOP K555J
Front: 33 psi (225 kPa , 2.25 kgf/cm )
33 psi (225 kPa , 2.25 kgf/cm )
Rear:
with less than 200 lbs (90 kg) of added weight
36 psi (250 kPa , 2.50 kgf/cm )
with more than 200 lbs (90 kg) of added weight
DCPR6E (NGK)
standard:
DCPR7E (NGK)
high speed riding:
30A
main:
10A, 5A
other:
Hypoid Gear Oil SAE 80
or XU20EPR-U (DENSO)
or XU22EPR-U (DENSO)