Universal 3" Exhaust Builder Kit | (304 Stainless) LS Engine Swap — Manufacturer part number: 25-1033.

Speed Engineering Builder Kits are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Builder Kits are mandrel bent, tig welded, and feature natural stainless steel construction. We stand behind our products in saying you will not find a better fitting, quality built, budget kit on the market.

Features include:

• Mandrel Bent Tubing
• 3" Tubing
• Natural 304 Stainless Steel
• Natural Steel Band Clamps
• Slip Fit Construction
• X-Pipe

Note: This is a universal build your own kit, and is not designed for any specific set of headers we offer.

Fitment and ordering

Confirm the vehicle, engine, dimensions and application restrictions listed above before ordering. Speed Engineering parts are designed to work with Speed Engineering components; mixing brands may require modifications.

Configuration choices: Exhaust Band Clamps. Confirm the required configuration with Speedzone before ordering if a selector is not shown.

Available upgrades and related Speed Engineering parts

These are separate purchases. Check quantities and the kit’s included parts before adding an upgrade. Each linked product shows your current store price and its own fitment.

• 3" Lap Joint Exhaust Band Clamp
• 3" Weldable V Band Flanges & Clamp

Manufacturer specifications checked October 4, 2026. Availability checked October 15, 2026. Availability refers to the manufacturer and can change; it does not indicate stock held at Speedzone.

Returns: All Speed Engineering product sales are final. No returns are accepted on Speed Engineering products. Please verify fitment before ordering. See our Return Policy for additional terms. This does not limit any consumer rights that cannot be waived under applicable law.