Welcome to Bullfrog Motosport!
Our DOME big block forged pistons are sold with the following components:
Select the appropriate bore size and compression height you are needing.
Stock compression height for Honda GX390, 420cc and 460cc pistons are 1.100". Our .900" compression height pistons work with our 4.650" length connecting rods.
Piston rings must be purchased separately.
Total Seal has the piston rings to fit these pistons
Our 1.100" compression height pistons use a ring width of:
1.0 x 1.2 x 2.8 millimeters
Our .900 compression height pistons use a ring width of:
1.0 x 1.2 x 2.0 millimeters