The following values are used for return shipping on your items: 2-stroke single cylinder $800, 4-stroke single cylinder $400, 2-stroke mono block $1,000, 4-stroke mono block $500, Inline 4 $600, Inline billet $1,500, Top case $3,000, 4-stroke head $700, Inline head $1,500, American V-Twin crankshaft $1,000, American V-Twin crankshaft in case $1,800, Single dirt bike crankshaft $400, Big bore kit $1,000. If you require additional shipping insurance, please list the amount you want your items insured for below.