AFR 345cc Rectangle Port 24 Magnum Aluminum Cylinder Heads - Big Block Chevrolet 600010104 MAG-10 PRO is the helmet

MAG-10 PRO is the helmet of choice for racing drivers looking for a Premium open face helmet for circuit use

Tensioner on laces to prevent shoes coming untied mid race

Youth X-Small

Includes 3 single layers of 4mil smoke Tearoffs

AFR 345cc Rectangle Port 24 Magnum Aluminum Cylinder Heads - Big Block Chevrolet 600010104 MAG-10 PRO is the helmetIf huge horsepower is what you are searching for, the 345 can certainly deliver. These cyilnder heads were targeted at larger cubic inch engines, 509 632ci, looking for maximum horsepower and rpm capability with a primary operating range of 3500 8000 rpm's (This range is an average and will vary with engine displacement and component selection). As well, these aluminum heads provide impressive torque figures at higher rpm levels, so higher reving 450+