The evolution of the scooter is here, with the Honda Grom. This bike has a 124.99cc air-cooled single-cylinder four-stroke engine with 9:3:1 compression ratio and a SOHC valve train. When we brought this into the HMF R&D Department, we weren't exactly sure what system would work best for it. After countless hours, we came up with 2 different systems: A low mount full system exhaust and a high mount slip on system. Each system has a unique sound, but both pickup 10-15% horse power gains across the board. Whichever system you choose, your Honda Grom is going to sound meaner and accelerate quicker off the line. A great compliment to an incredible machine.
FUEL TUNING IS NOT TYPICALLY REQUIREDLEARN MORE
Typically, fuel tuning is not required when installing an HMF Exhaust on this machine. However, other modifications to the machine may require the need for fuel tuning to ensure the machine runs properly, and there is no damage to the exhaust system. See the tuning settings below for possible tuning solutions or Contact Us for more information.