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These polished 304 stainless steel up pipes have been built with reinforced interlocking braid flex bellows. The interlocking braid inside the bellows adds extra durability to the pipes. The flex pipe material is then wrapped on top of the bellows to ensure these will outlast your stock pipe, and then some. Both driver side and passenger side up-pipes with gaskets. provide expert diesel truck repair services. Our ASE-Certified Mobile Diesel Service technicians have decades of field experience. Turbo