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DME custom 4 into 1 big tube step headers are built to order for any application. All systems are made to order and take 4 to 8 weeks to build.
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.