MB623003 KOSO Performance 170cc 4V Big Bore Kit - '19-'21 Honda Monkey 125 (Liability Waiver Required)
KOSO Performance 170cc 4V Big Bore Kit (MB623003)
Fits '19-21 Honda Monkey 125- PREMIUM GAS
'MUST Use with Premium Gas
Watch this video for more details :
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:
• 170cc ceramic coated cylinder
• forged piston
• performance camshaft
• camshaft bearing
• rocker arms
• 4 valve cylinder head
• intake manifold & gaskets
** This BBK uses a smaller 8mm Spark Splug, we highly recommend adding to your order.
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.
-
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 )
-
Add Cam Chain Tensioner Arm ?No Thanks, I don't need it., Yes, please add Takegawa Chain Tensioner Arm ($87) & SPARE WHEEL ($7), Yes, please add Koso Cam Chain Tensioner Arm (+$84.95)
-
Add Kitaco H-D Upgraded Starter ?No Thanks, I don't need one, Yes,add Kitaco HD Starter (758-1432100) +$109
-
Add Crank Support Bearing ?No Thanks, I already have one, YES Please add Takegawa Crank Support Bearing (01-10-0138) (+99.95)
-
WAIVERYes, I understand I will need to sign a Release Waiver
-
Required Spark Plug?No thanks, I Already have this Exact Spark Plug., Yes, please add NGK ER9EH Spark Plug (+$9.99)
-
PCX150 InjectorNo Thanks, I already have one., Yes, please add PCX150 Injector (+$49.95)
-
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)
-
Add Fuel Controller?No Thanks, I already have a Fuel Controller., Yes, please add aRacer Mini X & AF2 (+$765)
-
Add Digital Temp. Gauge ?Yes, please add KOSO Engine/Head Digital Temperature Gauge (+$99), No thanks, I don't need an Engine/Head Digital Temperature Gauge, Yes, please add OPMID Engine/Head Digital Temperature Gauge (+$99)
-
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 )
-
Engine Temp. Reducer PackageNo Thanks., Yes, please add Kitaco Clutch Cover, FIVE "5" Row Oil Cooler, & Tak. Super Oil Pump (+ $585)
-
High Flow Oil Pump?No Thanks, I don't need it., Yes please add Takegawa High Flow Oil Pump (+$57)
