AC PERFORMANCE 2.5" Aluminum Intercooler/Intake Tube — 11.8" (300mm) 6061 Straight Mandrel

AC PERFORMANCE's 2.5" straight aluminum tube is a 11.8" (300mm) 6061 alloy intake/intercooler pipe engineered for custom turbo, intake and cooling plumbing.

This straight mandrel-quality aluminum tube provides a smooth, uniform bore for air and charge flow in intercooler, intake or custom turbo plumbing. With an outside diameter of 2.5" (63mm), a 0.071" (1.8mm) wall and 11.8" (300mm) length, it’s supplied as a plain, high-finish pipe ready to be cut, joined, welded or clamped to suit your build. The lightweight 6061 alloy balances strength and machinability for fabrication and on-vehicle use.

What dimensions and material should I expect from this tube?

The tube measures 2.5" (63mm) outside diameter, 11.8" (300mm) long, with a wall thickness of 0.071" (1.8mm), fabricated from 6061 aluminum alloy. The straight profile keeps internal airflow consistent and the wall thickness gives a good balance of rigidity and ease of modification.

• Outside diameter: 2.5" (63mm)
• Length: 11.8" (300mm)
• Wall thickness: 0.071" (1.8mm)
• Material: 6061 aluminum alloy

How will this tube perform in an intercooler or intake system?

The straight mandrel-formed bore reduces turbulence and pressure loss compared with uneven or crimped tubing, helping maintain steady airflow through your intercooler or intake route. It’s intended as a component for custom assemblies rather than a direct-fit OEM replacement, so performance depends on how it’s integrated.

• Mandrel-quality straight bore for smoother airflow
• Uniform inner surface minimizes pressure drop
• Compatible with silicone couplers, clamps, and weld joins

Can I cut, weld or otherwise modify this pipe for my custom build?

Yes — the pipe is supplied with a high-class surface finish and is designed specifically to be trimmed, spliced, welded or clamped to match custom plumbing layouts. Its 6061 alloy composition machines well, and the wall thickness tolerates common fabrication methods used in turbo and intake systems.

• Suitable for cutting and trimming to length
• Weldable for permanent joints or brackets
• Works with standard silicone couplers and T-bolt clamps

What installation details and accessories should I plan for?

This part is a universal straight section; you’ll need couplers, clamps or welded adapters to integrate it into your system. Measure clearance and routing first to decide if additional brackets, reducers or bends are required to reach intercooler or throttle body connections.

• Use 2.5" silicone couplers or reducers for connections
• T-bolt clamps or worm-drive clamps recommended for secure seals
• Consider brackets or weld-on tabs for vibration-resistant mounting

Who this is for: The AC PERFORMANCE 2.5" straight aluminum tube is aimed at tuners, fabricators and DIY mechanics building or modifying turbo, intercooler and intake plumbing. If you’re fabricating custom charge pipes, patching a damaged run, or prototyping a new routing, this lightweight, easy-to-machine 6061 tube offers a straightforward, reliable section to integrate into your project.