This is a brand new clutch lifter set manufactured by Kitaco company in Osaka, Japan.
This part fits both Monkey 125 and MSX125 Grom.
It is recommended tp use this set when you upgrade your engine (hi comp piston or bore up kit)
Here are several technical informations from manufacturer:

DESCRIPTION
A SET OF REINFORCED DURALMIN CLUTCH LIFTER & REINFORCED CLUTCH SPRING
PERFORMANCE / DURABILITY IMPROVES VERY WELL.
FOR SMOOTH CLUTCH WORK
60% REINFORCED CLUTCH SPRING SET PREVENTS SLIPPAGE OF CLUTCH FOR SMOOTH CLUTCH WORK.
USING 3 OF STOCK SPRING TOGETHER WILL REINFORCE 30% OF SPRING.

REMARKS
○DURALUMIN MACHINED
○HARD ALUMITE FINISH
○CLUTCH SPRING:6 PCS AS SET


APPLICATION
MONKEY125
JB02 ALL MODEL
MONKEY125
JB03 ALL MODEL
GROM
JC92 ALL MODEL
GROM
JC61 ALL MODEL
JC75 ALL MODEL


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