Everything you need from a 34mm TB down to the clutch springs to transfer power to the rear wheel. FinBro ECM and 10 hole injector is included for turn key start and ride after professional installation. No maps, no laptops, no tuning needed.
Warning: Last items in stock!
•FinBro Spec'd Koso 4V Head
•FinBro ECM (no tuning or resetting needed)
•Koso 34mm TB
•Koso 4v Oval Port Intake Manifold
•Forged 4v Piston
•NGK Spark Plug
•FinBro HD Clutch Springs
•Hi Performance Camshaft
•FinBro 10 hole injector
•Cam Tensioner Button & upgraded FinBro Roller (HD)
•Steel Head Gasket, Both Side Cover and Exhaust Gaskets are included and Base gasket
Recommend the use of our matching FinBro 4V exhaust to gain a total of 23.8HP. Adding the optional larger fuel line increases HP by .8 for a total of 24.6HP.
Note: Stock Grom has a 9250 rpm redline. We suggest our forged rod/crank assembly for maximum strength and reliability.