Springs tuning scooter 4t (GY6) length 32mm blue +1000 revolutions yellow +1500 rpm red +2000 revolutions
Tuning Big Bore kit Scooter 4t to increase the engine capacity to 80cc complete kit without motor head 47mm
Variator tuning set for GY6 engines with a capacity of 150cc usable for most scooters and ATVs with a capacity of 150cc
Tuning Big Bore kit Scooter 2t to increase the engine capacity to 70cc for engine with piston pin with a diameter of 12mm
Tuning Big Bore kit Scooter 2t to increase the engine capacity to 70cc for engine with piston pin with a diameter of 10mm
Tuning Big Bore kit Scooter 4t to increase the engine capacity to 90cc complete kit without motor head 51mm
Additional oil cooler Tuning ATV 110 / 125cc for 139FM engines
Tuning Big Bore kit Scooter 4t to increase the engine capacity to 80cc complete kit with engine head
Tuning Big Bore kit Scooter 4t from 125cc to 165cc complete kit without motor head 58.5mm
Tuning Big Bore Ceramic kit Scooter 4t from 125cc to 170cc complete kit without engine head total cylinder height: 90.2 mm cylinder diameter: 60.3 mm hole spacing: 76.5 mm piston pin: 15 mm for GY6 engines