Dubach Racing Ns-4 Slip-On Exhaust Yamaha Wr250X Experience the power of precision with Dr.d Exhausts, where every exhaust is meticulously built, developed, and personally tested by none other than the legendary Doug Dubach. With an unparalleled commitment to track testing, Dr.d invests more time and expertise than any other company to ensure top-notch performance for your bike. Features: Unparalleled commitment to track testing for top-notch performance Each exhaust is a unique masterpiece, designed and fine-tuned on the track Doug Dubach's knowledge ensures high-quality development Stainless steel & aluminum construction Spark arrestor screen included Can be used with Dr.d or OEM head pipe Made in the USA Note: Images are for reference only.