High-Quality Construction: This Header Reducer Kit is made from durable mild steel and features a welded-on 3-bolt flange for added strength and stability., Complete Kit: The kit includes all the necessary gaskets and bolts, ensuring a hassle-free installation process., Efficient Size Reduction: The reducer reduces the collector diameter from 3 inches to 2-1/2 inches, allowing for better exhaust flow and improved performance., Precise Dimensions: With a 3.8-inch overall length and a 1/4-inch thick flange, this reducer offers a perfect fit and secure connection., Universal Compatibility: Designed with a 3-inch collector diameter and a 2-1/2-inch small end diameter, this reducer kit is universally compatible with various header and exhaust systems.
Header Reducer Kit, 3 to 2-1/2 Inch Speedway Motors
Header Reducer Kit, 3 to 2-1/2 Inch
Sku # 91013754
Mfr. Part # 91013754
Condition
New
Brand
Speedway Motors
Sold
Pair
Details

Each mild steel reducer comes with a welded-on 3-bolt flange, gaskets and bolts.

  • 3 Inch reduced to 2-1/2 Inch
  • Hardware included
Specs
MFG. Part #
91013754
Overall Length
3.8"
Collector Diameter
3 Inch
Flange Thickness
0.25"
Diameter Big End
3"
Diameter Small End
2.5"
Outlet Size
2-1/2"
Gasket(s) Included
Yes
Hardware Included
Yes
Material Type
Steel
Finish
Natural
Sold in Quantity
Pair
Flange Style
3-Bolt
Reviews

Yes

Rated
Product Rating
by Smw on March 21, 2026

Summary: Great product fast shipping

Yes, I recommend this product.

Exactly what needed

Rated
Product Rating
by Rebel on July 31, 2025

Summary: Made stock manifold better.

Yes, I recommend this product.

Yes

Rated
Product Rating
by J on March 10, 2025

Summary: All good

Yes, I recommend this product.

I would buy again if I needed it.

Rated
Product Rating
by Mike on February 19, 2025

Summary: All parts fit exact

Yes, I recommend this product.

I would buy again.

Rated
Product Rating
by Miguel on November 25, 2024

Summary: Just a good product.

Yes, I recommend this product.

Tech Support
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About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.