181cc BIG BORE KIT FOR STOCK CYLINDER HEAD.
 
POWER AND TORQUE INCREASED FOR BIG DISPLACEMENT.
 
TORQUE BECOMES MUCH BETTER AROUND MIDDLE RPM.
 
FOR MSX I-MAP (SOLD SEPARATELY) IS REQUIRED (Must use with Larger Injector)

*I-MAP NOT COMPATIBLE WITH 125 MONKEY (Aracer or Power Commander can be used)*
 
○ALUMINUM CYLINDER
○DISPLACEMENT：181cc
　BORE:φ63
　STROKE:57.9mm(STOCK)
○COMPRESSION RATIO:11.1：1