Big dome hump day!11 Oct, 2018 in Head Hoggers tagged 124 dome pistons / big hp harley / big HP setups / big inch engine kits / CP carrillo / custom cp pistons / haley horsepower / harlay head porting / harley 4 valve porting / harley big horsepower / harley bore and hone / harley case service / harley cylinder boring / Harley flywheel rebuilding / harley machine shop / harley machining / Head Hoggers by headhoggers (updated 2184 days ago) Thought I would share some of our big dome pistons on hump day! Gotta love big domes. Comp is your friend!!