<https://rovanrc.com/product/RV85323/#product>
<http://schema.org/description>
"Rovan (ROFUN) 45cc 4-Bolt Top End Rebuild KitMPN: RV85323  Rovan 4-Bolt 45cc Engine Top End Rebuild KitComplete with:&amp;bull;45cc high performance cylinder head&amp;bull;High Performance Piston and ring (43mm)&amp;bull;Head gasket and bolts&amp;bull;Wrist pin, wrist pin bearing and washersNice quality.Fits Rovan (ROFUN) 45cc engines."
<https://rovanrc.com/product/RV85323/>