NCY 72 cc Cylinder Kit (Cast ); QMB139/GY 50


NCY 72 cc Cylinder Kit (Cast ); QMB139/GY 50. NCY GY 50/QMB139 47mm bore, Cast Iron, Cylinder Kit w/o head

Our most popular big bore kit for the QMB139/GY6 50 scooter engine, this bolt on 72cc kit really performs nicely when you combo it with part # 1100-1250, NCY Performance Camshaft. Don’t forget to upjet!


Remove your valve from your scooter’s head and meaure the full length of the valve stem. Some scooters like Znen(Wolf Brand, GMW, Bintelli, etc), Kymco 50cc 4T(Agility) …more see full description below.

10 in stock

UPC: N/A SKU: 1100-1247 Category: Tags: ,

NCY 72 cc Cylinder Kit (Cast ); QMB139/GY 50 According to and in compliance with the EPA and California Air Resource Board, this product is not intended for use on public roads or land. This product is NOT AVAILABLE for sale in California.

Additional information

Weight 5.2 lbs
Dimensions 11 × 6 × 6 in