Diode Dynamics

Let customers speak for us

from 83 reviews

Longtube Headers and connector pipes

Headers were the easiest I have ever installed. Both sides, driver and passenger side slide right up into place with no problems. Quality was great, welds were good , I couldn’t find a thing wrong with them ( 1 7/8” long tube). After installing with a free flowing cat back including the x pipe I got a little over 40 more HP. That’s not bad for a simple bolt on. Very satisfied with this product and the tech support. Recommend them to anyone looking for a good set of headers at a real good price, and received them in 3 days.!!!!

Customer John Barton

03/16/2026

Speed Engineering Spark Plug Wires Car, Truck, & SUV 10" Length "RED" 26-1001

My opinion

Probably the best customer service I've ever dealt with

03/14/2026

Speed Engineering 2011–2025 Ford F-150 1-7/8" Longtube Headers & Y-Pipe Full Kit (5.0L Coyote) 25-1168

Fast shipping, great fit.

Darrell Boone

03/06/2026

Suspension Engineering Camaro Firebird Panhard Rod Relocation Kit 1982-2002 (Red or Black) 33-1001

Great job

Product shipped fast I was kept informed by email as good as an experience as you could ask for

Elmer fudd

03/02/2026

Holley EFI Holley Hi-Ram Intake - GM LS3/L92 300-117

Awesome company

Ordered the Speed Engineering axle back exhaust for my Corvette, it shipped same day with free shipping, and was priced less than buying directly from the manufacturer. New customer for life 👍

James M.

02/26/2026

Speed Engineering Corvette C6 True Dual Exhaust 2005-2013 (LS2 LS3 LS7 ENGINES) 25-1063 ETA 4/30/26

Parts look great price is awsome and came on time . Haven't installed them yet butt looks like they will fit just fine will by more from your establishment

William James

02/19/2026

Suspension Engineering Camaro & Firebird Weld in Subframe Connectors 1993-2002 (Red or Black) 33-1009

Awesome product! Looks clean !

B.G.

02/07/2026

Suspension Engineering Silverado & Sierra Engine Cross Bar 1999-2006 2WD ONLY (Red or Black) 33-1143 ETA 3/27/26

Very good fast shipping. But luckily all was in good shape because the box it came in was torn into pieces amazing parts didn't fall out.

michael

01/20/2026

Speed Engineering 2014–2019 C7 Corvette 2" Longtube Headers (LT1 / LT4 Engines) 25-1067 ETA 4/30/26

edelbrock carburetor 800 avs 2

great service with some questions ! the price was over the top ! extra discount ! and delivery was outstanding , very fast ! i was stocked on how fast ! thank a lot !

Anonymous

01/18/2026

Edelbrock Carburetor 1912

Great plugs to gain clearance

These plugs are the only performance plugs I use to gain clearance from the headers, besides them being Accel brand.

Steamboat45

01/08/2026

ACCEL 14mm Thread - .460 in Reach - Tapered Seat - 2 pack of 0574S-4 8198

Great fit

Ordered these headers for my 04 Gto that I ls3 swapped and they still fit perfectly and sound a lot better than my stock headers with a cat delete. Getting it tuned next week will see how they perform then

Helton

01/08/2026

Speed Engineering 2004–2006 Pontiac GTO 1-7/8" Longtube Headers & X-Pipe Full Kit (LS1 / LS2 Engines) 25-1050

2004 GMC Sierra 1500 5.3

I am very impressed with the quality of these headers, especially for the price. I have purchased $500.00 headers that don't look as good as these do. Excellent product!

Scot Waitman

01/02/2026

Speed Engineering 1999–2013 Silverado, Sierra, Tahoe, Yukon & Escalade Shorty Headers 25-1016

Replacement Shock

Needed to replace front drivers shock that was leaking. Best price to include free shipping. Super fast delivery!

Easy E

12/31/2025

Eibach 00-06 Toyota Tundra Front Pro-Truck Sport Shock

big T review

Item looks good but have heard after buy that manifolds will not hold up to their black color after they are mounted and use. I am hoping that this is untrue. We will see

terry moore

12/29/2025

Speed Engineering LS Swap Exhaust Manifolds "Black" Camaro, Chevelle, Nova, C10, K10, OBS Truck 25-1124

I am glad I bought it from berry performance sales. Great fit for my car

B.B.Y.

12/28/2025

Speed Engineering 2014–2018 Silverado / Sierra 1500 1-7/8" Longtube Headers & Y-Pipe Full Kit (5.3L / 6.2L) 25-1037 ETA 4/30/26

Let customers speak for us

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