KOSO

The Koso 4V Head Kit is the ideal engine part to complete the Koso Honda Grom® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head...

Koso Air Density Meter Mounting Bracket Be000M01

Koso Air Fuel Ratio Meter 2-Stroke Sensor Adapter Bg001855

This back lighted wide-band air/fuel ratio gauge will give you information on your engine to allow a more precise tuning. The programmable warning will tell you if your engine is running too lean or...

Integrated temperature level thumb switch allowing to easily navigate through the temperature settingsDoes not require power/ heat switch, all incorporated into gripUniversal fitment designed to fit...

Integrated temperature level thumb switch allowing to easily navigate through the temperature settingsDoes not require power/ heat switch, all incorporated into gripUniversal fitment designed to fit...

Integrated thumb switch for easy installation, heat setting can be changed without removing your hand from the handlebar"Plug and play" wiring connections for quick and easy installation5 Temperature...

Unleash all the power your Honda GROM can handle with the Koso 170cc Big Bore kit.Ceramic coated aluminum cylinder61mm bore, 11.5:1 compression ratio forged piston/ring kit (premium fuel required)Top...

Koso Bullet Housing For 1.25" Bar Be550M18

Clutch components fit all Honda MSX125 Grom modelsClutch lifter plate is made from CNC machined aluminum and is much stronger that the stock plate for much better durability and functionality over...

Clutch components fit all Honda MSX125 Grom modelsClutch lifter plate is made from CNC machined aluminum and is much stronger that the stock plate for much better durability and functionality over...

Connecting tube is designed to connect the stock Grom airbox to the Koso 34mm throttle body