Speed Engineering Universal LS-Swap 1 3/4" Mid-Length Headers
Speed Engineering universal LS-swap mid-length headers use natural-finish 304 stainless steel, mandrel-bent 1 3/4-inch primaries, TIG-welded construction, and CNC-machined flanges for compact LS-swap installations.
Recommended upgrades: Choose SMG LS MLS gaskets, SMG 9070C ceramic plug wires, and the 25-1125 header-wrap kit above. The ceramic wires resist direct header heat and are the only plug wires used on SMG in-house header builds.
Fitment: Universal GM LS-engine swap application. Vehicle-specific clearance and fabrication must be verified by the installer.
Processing & Shipping Overview
Processing occurs before shipping.
Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.
Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.
For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.