approx 2.5 x 4"
 
1977 XR75
1978 XR75
1979 Z50R A Fuel Tank - Seat
1980 Z50R A Fuel Tank - Seat
1981 Z50R A Fuel Tank - Seat
1982 Z50R A Fuel Tank - Seat
1983 Z50R A Fuel Tank - Seat
1984 Z50R A Fuel Tank - Seat
1981 XR100 A FUEL TANK EMBLEM
1982 XR100 A FUEL TANK EMBLEM
1982 XL100S A Fuel Tank Stripe
1982 XR80 A Tank Stripe
1982 XL80S A Fuel Tank
 
and others, Honda doesnt have apart number for every bike
 
approx 2.5 x 4.125"