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Perfcore design reduces exhaust drone
brake line extended brackets and shock extensions so you can retain use of your factory shocks
Torque and Fuel Economy to your vehicle without even popping the hood
(1) Polished 4" tip
HSP Ceramic Billet Manifolds For 2001-2016 GMC/Chevrolet 2500/3500 6.6L Duramax search by vehicle Perfcore design reduces exhaust droneHSP Diesel Coated Billet Manifolds are machined from 1018 steel. This means you have the maximum flow due to a more open port design increasing the flowability of the exhaust and the common flow restriction that is found in the driver's side manifold. The design of the HSP Diesel Coated Billet Manifolds is also low profile meaning that you get some extra room if you need to worry about the custom routing of parts. The HSP Diesel Coated Billet
