Cylinder head, cylinder and piston set15hp UPOWER 88R 4S

Kit cylinder head engine dirt bike 88 UPOWER 4 valves
2 x 21.5 mm intake valves
2 x 18.5 mm exhaust valves
Simple Overhead Head Cam
Automatic decompressor
Fit on all Honda CRF50 and chinese engine until 110cc
On a 50cc the new cubic will be 88 and on a 88cc it will be 105cm3
 
Set provided same as the picture. The piston is special from us to increase the reliabiltity
We suggest to upgrade the gear box, the clutch, the ignition and the first gear to support the 15HP
Also we suggest to use the special titanium valve retainer reference 4445
to increase the secure in hight rpm
Full engine ready to use reference 3816