MC623000 KOSO Performance 4V Head ONLY + Piston - '19-'21 Honda Monkey 125 (Liability Waiver Required)
KOSO Performance 4V Head ONLY + Piston (MC623000)
Fits '19-21 Honda Monkey 125- PREMIUM GAS
'MUST Use with Premium Gas
"REQUIRES 170cc CYLINDER"
Requires a Fuel Controller & A/F Monitor (sold Separately) for Proper fueling.
Its Highly recommended to run a 16t or 17t Front Sprocket with this BBK
To keep the revs in the PowerBand
Includes:
• forged piston
• performance camshaft
• camshaft bearing
• rocker arms
• 4 valve cylinder head
• intake manifold & gaskets
Requires a Fuel Controller & A/F Monitor (sold Separately) for Proper fueling.
** Kit should be installed by a certified mechanic to ensure proper function. Improper installation could result in catastrophic engine failure.
** Highly Recommended To install Temp. Gauge and A/F Monitor to ensure proper running Temperatures and Add Longevity to the Motor.
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Add HardRacing "Factory Logo" T-Shirt : only $5.95No Thanks., Yes, please add Small/BLACK (+$6.95), Yes, please add MED/BLACK (+$6.95), Yes, please add LARGE/BLACK (+$6.95), Yes, please add XL/BLACK (+$6.95), Yes, please ADD (2XL)BLACK (+$8.95 )
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Add Cam Chain Tensioner Arm ?No Thanks, I don't need it., Yes, please add Takegawa Chain Tensioner Arm & SPARE WHEEL (+$94), Yes, please add Koso Cam Chain Tensioner Arm (+$84.95)
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WAIVERYes, I understand I will need to sign a Release Waiver
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Required Spark Plug?No thanks, I Already have this Exact Spark Plug., Yes, please add NGK ER9EH Spark Plug (+$9.99)
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PCX150 InjectorNo Thanks, I already have one., Yes, please add PCX150 Injector (+$45)
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Add Optional Koso 34mm Throttlebody?No, I don't need the Koso 34mm Throttlebody, Add Koso 34mm Throttlebody DY623013 & KN POD Air Filter & Fairing Brace, Add Koso 34mm Throttlebody DY623013 (+$119)
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Add Fuel Controller?No Thanks, I already have Both the PCV and WBC2., YES, please add Both Dyno Jet PCV (+$319) & WBC2 (+$249), Yes, please add Dyno Jet PCV (+$319) & WBC2 (+$249) & A/F Gauge (+$68), I Already have a PCV, so I ONLY Need a WBC2 (+$249), I Already have a PCV, so I ONLY Need a WBC2 (+$249) & A/F Gauge (+$68)
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Add Digital Temp. Gauge ?Yes, please add KOSO Engine/Head Digital Temperature Gauge (+$89.95), No thanks, I don't need an Engine/Head Digital Temperature Gauge, Yes, please add OPMID Engine/Head Digital Temperature Gauge (+$79.95)
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Sprockets?No thanks, I don't need a Sprockets, Yes, please add 16t Front Sprocket (+$7.99 ), Yes, please add 16t Front ($7.99) & 32t Rear (+$29.99 ), Yes, please add 17t Front Sprocket (+$7.99 )
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Engine Temp. Reducer PackageNo Thanks., Yes, please add Kitaco Clutch Cover, FIVE "5" Row Oil Cooler, & Tak. Super Oil Pump (+ $499)
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High Flow Oil Pump?No Thanks, I don't need it., Yes please add Takegawa High Flow Oil Pump (+$57)