The Full Blown Dodge Srt 4 XXL fuel rails features a true -10 through hole. These rails were designed for those who are looking to make a lot of horsepower without any worries of fuel starvation. The Dodge Srt4 XXL rail paired up with our dual pumps will the be last fuel system you will ever need!! They are anodized to help protect against corrosion of methanol or alcohol.