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Engines

Engine Modifications 

Kr4 Performance engine modifications are built around rideable and reliable horsepower; power that you can use from bottom to the top end. Every Kr4 Performance engine is built based on a customer’s race budget and satisfaction.

4-Stroke

HEAD MODIFICATION;
ASF TRANS 
DECK HEAD 
THROTTLE BODY
RECUT EXISTING VALVE SEAT
REMOVE EXISTING SEATS AND INSTALL
COPPER SEATS
SURFACE HEAD
CYLINDER RE-PLATING
REMAP 
CARB MOD
CRANK BALANCING
RACE CAM
RACE PISTON
BRITE CASES
RACE PREP

    2-Stroke


    FULL MOTOR LABOR
    PORT AND POLISH
    ASF TRANS 
    DECK HEAD 
    CARB MOD 
    SURFACE HEAD
    CYLINDER RE-PLATING
    CRANK BALANCING
    VFORCE REEDS 
    RACE PISTON 
    BRITE CASES 
    RACE PREP 


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