DME custom 4 into 1 big tube step headers are built to order for any application. While we have some systems in stock, if the one you need is not, turnaround time is currently 6-8 weeks.
DME’s header is a 1 3/4″ to 1 7/8″ diameter step pipe 4 into 1. The big tube step header is designed for large engines and NOS motors and all-out Grudge bikes (short-necked and d-raked). Fits flush with the bottom case.