Just a 126″2 Feb, 2017 in Head Hoggers tagged harley big inch / harley head porting / harley machining / Harley Performance / Head Hoggers by headhoggers Well here’s another 126″ we setup. As you can see from dyno the clutch is wasted. We are also running out of fuel pump on top end. More parts to go fast. Lol. This is a naturally aspirated setup.