BSTFLEX Exhaust Heat Shield Wrap 12"x39" Aluminum-Fiberglass Sheet — 1100°F Resistant, Includes Stainless Steel Ties

BSTFLEX Exhaust Heat Shield Wrap is a flexible, heavy-duty 12" x 39" aluminum-fiberglass sheet designed to lower radiant heat around mufflers, exhaust pipes, fuel tanks and firewalls.

This aluminum-fiberglass heat shield sheet combines high-temperature resistance and easy custom fitting to protect vehicle components from excessive radiant heat. Made 1/2" thick with embossed aluminum facing and supplied with two stainless steel ties, the wrap trims easily to fit motorcycles, cars, and industrial piping. It’s intended as a protective barrier to reduce underbody temperatures and help protect wiring, hoses, and bodywork from prolonged heat exposure.

How does this heat shield reduce temperatures under the vehicle?

The composite aluminum-fiberglass construction reflects and blocks a large portion of radiant heat coming from the exhaust and muffler. The embossed aluminum face reflects heat outward while the fiberglass core provides thermal resistance, cutting the radiant load that reaches nearby parts.

• Blocks up to 70% of radiant heat transfer according to material specs.
• Withstands continuous temperatures up to 1100°F for high-heat areas.
• Embossed aluminum surface improves reflectivity and durability.

Can I cut and shape the 12" x 39" sheet to fit tight spaces?

Yes — the sheet is designed for hand trimming and bending so you can adapt it to curved pipes, mufflers, fuel tanks and firewall contours. Use tin snips or heavy-duty scissors and be mindful of sharp edges after cutting; light filing of edges can improve handling safety.

• Hand-cut tolerance approximately ±1 cm; easy to trim to custom sizes.
• Flexible enough to bend around mufflers and pipe curves without special tools.
• Includes two 39" stainless steel ties for secure fastening on long runs.

Is this heat shield suitable for motorcycle and car installations?

Absolutely — the BSTFLEX sheet fits a range of automotive and motorcycle applications where radiant heat poses a risk. It works well as muffler insulation, undercarriage protection, or a local shield for fuel tanks and exposed hoses, offering a compact solution when space or access is limited.

• Ideal for mufflers, tailpipes and nearby chassis components.
• Useful for fuel tank and firewall protection in close quarters.
• Also suitable for heavy-duty industrial piping and workshop uses.

How do I install and secure the heat shield without special tools?

Installation is straightforward: measure, trim to fit, bend to shape, and fasten with the supplied stainless steel ties or additional clamps. No adhesives are required; mechanical fastening maintains a removable and serviceable barrier around hot components.

• Measure and mark cut lines; trim with shears or tin snips.
• Bend to conform to pipe or muffler shapes, avoiding sharp creases.
• Secure with the included 39" stainless steel ties or hose clamps as needed.

Who is this for: The BSTFLEX Exhaust Heat Shield Wrap is aimed at DIY mechanics, shop technicians, and performance vehicle owners who need a durable, high-temperature barrier to protect wiring, tanks, and bodywork from exhaust heat. It’s also useful for industrial maintenance where reflective, compact heat protection is required. If you need a cut-to-fit, high-heat tolerant shield for tight spaces, this product offers a practical, serviceable solution.