For engines between 60 - 75 cc, including Hamilton logo.
For engines between 80 - 100 cc, including Hamilton logo.
For engines between 90 - 110 cc, including Hamilton logo.
For engines between 55 - 60 cc, including Hamilton logo.
For radial engines between 90 - 110 cc, including Hamilton logo.
For engines ~150 cc, including Hamilton logo.
For engines between 100 - 120 cc, including Hamilton logo.