Zongshen Z155 Gearbox Kit - New Type
 
2 Types:
Old Type - To suit standard ball bearing type crankcase pre 2020, splined output shaft.
New Type - To suit new style needle roller bearing crankcase 2020 onwards, solid output shaft,
 
Please Note:
Not the same as YX160 Engines.
New type will not fit in old type engine.
Shift drum not included.
 
Input Shaft Bearing Fitting:
Clutch Side = 17mm
L/H Casing side = 12mm 
Output Shaft Bearing Fitting:
Sprocket side = 17mm
Kickstart Gear Side 15mm
 
STANDARD RATIO (INPUT/OUTPUT):
1ST = 13/34 = 2.61
2ND = 17/29 = 1.70
3RD = 17/23 = 1.35
4TH = 20/21 = 1.05
 
Item Includes:
1x Z155 gearbox