KOSO Heavy Duty Clutch Kit with Springs for Honda Grom Monkey 125 (2014-2020)! This is a complete clutch upgrade package with 60% stiffer clutch springs! KOSO Heavy Duty Clutch...
Koso’s High-flow oil pump for 2014-2020 Honda GROM and 2018-2021 Honda Monkey 125® is strongly recommended for those who want to increase oil flow for engine protection, a great upgrade...
Koso Honda Grom 125 (ALL YEARS) Throttle Body Screw - Brass Replace the stock air screw on your throttle body with this high precision brass model. Made 100% from...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES Koso 34mm Throttle Body for Honda Grom 125! Super large throttle body that will allow your...
Koso 30.5-34mm intake manifold for 2014-2020 Honda Grom 125! Pair this up with Koso 34mm large throttle body that will allow your big bore engine to breathe! Requires 30.5-34mm throttle...
KOSO 170cc Gasket Kit 61mm for Honda Grom 125KOSO 61mm Cylinder Head Gasket and Cylinder Base Gasket for the Honda Grom.Includes 1 Head Gasket and 1 Base GasketThis product is...
Koso's high performance ignition coils are designed using the most advanced materials on the market today. The stronger spark generated by the Koso ignition coil results in more horsepower, smoother...
Koso Ignition Coil - Honda Grom (2022+) Koso's high performance ignition coils are designed using the most advanced materials on the market today. The stronger spark generated by the Koso...
As the throttle body and intake manifold are used to control the amount of air flowing to the engine's combustion chamber, they are important elements of the intake system. Using...
KOSO Injector Adapter Kit for 2014-2020 Honda Grom 125.This adapter is needed when you run the Koso Fuel Injector Part # (KOSO-1019)NOT AVAILABLE FOR SALE OR USE IN CALIFORNIA.ANY ORDERS...
KOSO High Flow Injector for Honda Grom 125. Direct fit upgrade for Honda MSX Grom 125 with 170cc Big Bore Engines.NOT AVAILABLE FOR SALE OR USE IN CALIFORNIA.ANY ORDERS FROM...
KOSO 28mm Throttle Body (DY640000) for the 2021 and newer Honda GROM & Honda Monkey. As the throttle body and intake manifold are used to control the amount of air...
The main difference between the Koso Clutch Enhanced Lifter Plate and the stock one is it's strength. Koso's CNC Lifter Plate is stronger in order to provide better durability and...
The new KOSO performance camshaft for Honda Grom 2022+ will give you great results at high RPM. This camshaft can be used with a stock engine, but will even...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION-CONTROLLED MOTOR VEHICLES170cc Big Bore kit with 4 Valve Cylinder Head kit for (2014-2020) Honda Grom MSX 125 and (2018-2021)...
KOSO 4 Valve Big Bore Piston and Rings ONLY Honda Grom 125 (Cylinder is NOT included)Replacement 4 Valve Piston and Rings for the KOSO 170cc 61mm bore. No cylinder is...
The new KOSO performance camshaft for Honda Grom 2022+ will give you great results at high RPM. This camshaft can be used with a stock engine, but will even...
KOSO BIG BORE KIT 150CC - Honda Grom / Monkey 125 (2022+) with 5 Speed Transmission. Made from the best components available on the market, the 150cc Big Bore kit...
KOSO 61mm Replacement Forged Piston Kit 2 Valve Head - Honda Grom 125 NOT AVAILABLE FOR SALE OR USE IN CALIFORNIA. ANY ORDERS FROM CA RESIDENCE WILL BE CANCELLED...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLESThe KOSO 4V Cylinder Head Kit for the 2014-2020 Honda Grom and 2019-2021 Honda Monkey is the...
The new KOSO racing air filter cover for 2022+ Grom models is not only easy to install, but it will increase the airflow, improve filtering efficiency and raise the engine...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES KOSO 4 Valve Head Replacement Camshaft - Honda Grom MSX 125 NOTES: Professional installation...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLESKoso Camshaft Kit - Honda Grom MSX 125 (2014-2020) 4 Speed EngineKoso Camshaft Kit - Honda Grom...
The new KOSO performance camshaft for Honda Grom 2022+ will give you great results at high RPM. This camshaft can be used with a stock engine, but will even...
