125cc with XS1P52QMI engine code not for GY6 engine .
XS1P52QMI is not GY6 engine, it's design by SYM company Taiwan.
LAMBRETTA
LAMBRETTA V125 Special 125 ie 4T euro 4 2019-> (XS1P52QMI-3C)
PEUGEOT
PEUGEOT DJANGO 150 4T euro 3 (XS1P57QMJ-2B)
PEUGEOT LXR 125 4T LC euro 3 (MB)
PEUGEOT TWEET 125 4T euro 3
PEUGEOT Speedfight 3 125 (4 stroke)
SYM EURO MX 125 4T
SYM FIDDLE III W4 125 4T euro 3 (XS1P52QMI-3B)
SYM SYMPHONY ST W4 125 4T euro 3 (XS1P52QMI-3B)
SYM SYMPHONY S 125 4T euro 3 (XS1P52QMI-4)