performance 63ccm 44mm cylinder + 47mm cylinderhead installed valves for GY6 engine 139QMB 139QMA All parts on the Pic included. Not allowed for legal Street use.

This GY6 engine performance cylinder for the GY6 engine 139qma and GY6 engine 139qmb fits: ADLY BT 50 4T - BAOTIAN Tuning BT/ Eco Bike 50 4T - BAOTIAN Tuning BT49QT-2 50 - BAOTIAN Tuning BT49QT-7 - BAOTIAN Tuning BT49QT-9 - BAOTIAN Tuning BT50QT-11 - BAOTIAN Tuning BT50QT-9 50 - BENZHOU City Star 50 - BENZHOU YY50QT-6 - BUFFOLO Wind 50 - HERKULES/ SACHS 49er - KREIDLER Flory 50 4T - KYMCO Agility euro 2 50 - KYMCO Filly 50 - KYMCO New Dink 50 - KYMCO Nexxon 50 - KYMCO People S 50 -KYMCO People S euro 2 `03 - KYMCO Super 8 50 - KYMCO Vitality 50 - KYMCO Vitality euro 2 50 4T - KYMCO Yager GT 50 - KYMCO Yager GT euro 2 - MSK Eco Bike 50 4T - PEUGEOT V-Clic 50 - REX Capriolo 50 . REX Capriolo/ RS 4T - REX RS 450 - REX RS 500 - RIEJU Paseo 50 - RIEJU Toreo 50 - ZHONGYU QT-5 50 - ZHONGYU QT-7 50 - ZONGSHEN Wind 50 - ZONGSHEN ZS50QT 50 4T AC , and much more Scooter Models with 139QMA or 139QMB engine. This GY6 engine 139qma / 139qmb performance cylinder is not for legal Street Driving.