<https://www.wellbots.com/products/ssp-g-50mm-qmb139-performance-cylinder-kit-169-54>
<http://schema.org/description>
"This cylinder kit offers a 50mm bore, designed to provide enhanced performance for QMB139 engines."
<https://www.wellbots.com/products/ssp-g-50mm-qmb139-performance-cylinder-kit-169-54>