Customer Appreciation Week 2026
Customer Appreciation Week 2026
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#91013751
Speedway 3-Bolt Header Collector Reducer Kit, 2-1/2 to 2 Inch
- Comes with gaskets and hardware
- 2" OD outlet
- Natural, unpainted steel
$29.99
/pair
In Stock
$32.99
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Product Summary
Universal Fit, 2-1/2 Inch Collector Diameter, Steel
- Comes with gaskets and hardware
- 2" OD outlet
- Natural, unpainted steel
- 1/4" thick flange
- Work on most 2-1/2” collectors and flanges utilizing the 3 bolt configuration
Need To Know
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855.313.9176Quick and Easy Returns
Return PolicySpeedway Motors 91013751 Details
Speedway Motors 91013751 Details
Speedway Motors 91013751 Specifications
Speedway Motors 91013751 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91013751 |
| Brand | Speedway Motors |
| Flange Style | 3-Bolt |
| GENERAL | |
| Overall Length | 3.54" |
| Centerline of Holes | 3.07" |
| Collector Diameter | 2-1/2 Inch |
| Flange Thickness | 0.25" |
| Outlet Size | 2" |
| Gasket(s) Included | Yes |
| Hardware Included | Yes |
| Material Type | Steel |
| Finish | Natural |
| Sold in Quantity | Pair |
Ratings & Reviews
4.8
44 Reviews
Customers highly praise the product for its perfect fit, quality, and practicality, stating it effectively eliminates exhaust leaks. Its material quality is often highlighted, with heavy gauge steel providing durability and longevity. The product's versatility shone through as it was usable in tight spaces and accommodated various pipe sizes. Several users recommended this as an affordable and high-quality alternative to others on the market. Despite some suggesting longer bolts for improved usability, the product's overall performance and fit received widespread commendation.
Ratings & Reviews
4.8
44 Reviews
Customers highly praise the product for its perfect fit, quality, and practicality, stating it effectively eliminates exhaust leaks. Its material quality is often highlighted, with heavy gauge steel providing durability and longevity. The product's versatility shone through as it was usable in tight spaces and accommodated various pipe sizes. Several users recommended this as an affordable and high-quality alternative to others on the market. Despite some suggesting longer bolts for improved usability, the product's overall performance and fit received widespread commendation.
4.8
44 reviews
5
37
4
6
3
1
2
0
1
0
Most Liked Positive Review
5.0
Solid Product!
I bought these header collectors for an LS swap project that was missing O2 sensors. These collectors have a solid build and come with a protective exterior coating to eliminate rust. I welded on some O2 bung that allowed me to connect these to my existing header and my swap. For the price, I highly recommend this kit. It comes with the collector, nuts and bolts and gaskets for easy installation..
Most Liked Negative Review
3.0
Works, however
Good quality and finish. However supplied bolts (one inch thread) are not long enough to attach 910-0329 ram horns. Not enough length to attach lock washer or nut. Need to purchase longer bolts.
Filter by Ratings
Yes
5.0
4 months ago
Zinger
Omaha ne
Verified
Nice pieces
Would Recommend
Good quality
5.0
7 months ago
C02macdaddy
Florida
Verified
Good quality, nice fit.
Would Recommend
I would buy this product again
4.0
a year ago
KEVS33
West Coast
Verified
Building Exhaust system
Would Recommend
I would them again. Perfect fit.
5.0
a year ago
Doc
Littleton, CO
Verified
Weld exhaust pipes on and install. Prompt delivery.
Would Recommend
I would buy more from speedway
5.0
2 years ago
Gary
Galena ks
Verified
I was building a race truck and needed collector for the headers. Couldn't get them from auto zone or O'reilly's even tried Amazon. Speedway had what I needed.
Would Recommend
Solid Product!
5.0
2 years ago
Tone from NM
Las Cruces, NM
Verified
I bought these header collectors for an LS swap project that was missing O2 sensors. These collectors have a solid build and come with a protective exterior coating to eliminate rust. I welded on some O2 bung that allowed me to connect these to my existing header and my swap. For the price, I highly recommend this kit. It comes with the collector, nuts and bolts and gaskets for easy installation..
Would Recommend
Exactly what I needed!!
5.0
2 years ago
Jimmy Six
Mammoth Lakes, CA
Verified
Perfect for my exhaust
Would Recommend
Perfect fit
5.0
2 years ago
Jim
Walterboro sc
Verified
It was a perfect fit just what I needed for my headers for my S10
Would Recommend
Great product
5.0
2 years ago
Towens
Wheatfield, Indiana
Verified
Great fit
Would Recommend
It's great
5.0
2 years ago
Gearhead
USA
Verified
No exhaust leak, quality product.
Would Recommend
Showing 10 of 44 reviews
Questions & Answers
Questions & Answers
8 Questions • 9 Answers
Will these work with ram horns 9300329
by Chevy talk
• 6 years ago
1 answer
View Answer
Is the outlet 2" OD or 2" ID?
by Tommy
• 8 years ago
2 answers
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Will these work with the 2.5" ram horn exhaust manifolds? (9300328) The measurement for the exhaust manifold flange is not listed in the description.
by Chris
• 9 years ago
1 answer
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How does the exhaust down pipe attach to it?
by Motorheads54
• 10 years ago
1 answer
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will these fit a factory 350 header
by 21Chevy
• 11 years ago
1 answer
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hi what is the measurement from hole to hole thanks bill
by bill
• 14 years ago
1 answer
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Will these mount on my 2 1/2 exhaush cut outs with the three hole mounting flang
by Dan
• 15 years ago
1 answer
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Will these flangs fit the stock early model Chevy Ram Horn exhaust?
by Peter
• 15 years ago
1 answer
View Answer
8 of 8 questions shown