SKU: 45730194325

Skunk2 Racing Alpha Series Race Header (412-05-1930)

Sale price$244.68 Regular price$271.87
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Skunk2 Racing Alpha Series Race Header (412-05-1930)2. 5in. Collector 4 2 1 Tri Y Design No Catalyst. Skunk2 is proud to announce its all new Alpha Series Header for the '06 '11 Civic Si. Patterned after our already popular and dyno proven MegaPower Headers, which have been used by leading, competitive race teams for years, Skunk2's Alpha Series Header employs many of the same design characteristics and technology. Our decision to produce the Alpha Series Header was driven by our desire to make our

2.5in. Collector-4-2-1 Tri-Y Design-No Catalyst. Skunk2 is proud to announce its all-new Alpha Series Header for the '06-'11 Civic Si. Patterned after our already popular and dyno-proven MegaPower Headers, which have been used by leading, competitive race teams for years, Skunk2's Alpha Series Header employs many of the same design characteristics and technology. Our decision to produce the Alpha Series Header was driven by our desire to make our race-proven design more affordable and accessible to everyday enthusiasts. New manufacturing techniques allow us to do so at a lower overall cost, making race-winning header technology available to everyone. Skunk2's Alpha Series Header for the eighth-generation Civic Si offers Skunk2 performance, industry-leading customer service, and a full warranty policy, all at a price comparable to lesser budget-minded headers. Unlike the budget-minded headers, though, only Skunk2 Alpha Series Headers ensure precise fitment and the peace of mind of knowing that a Skunk2 representative is just a phone call or email away. All Skunk2 Alpha headers are designed and engineered to maximize exhaust flow and increase both horsepower and torque throughout the powerband. The unique design is the result of more than a decade of racing experience coupled with computerized modeling and extensive dyno testing. Each Skunk2 Alpha Series Header features equal-length, sequentially paired, stepped primaries in a 4-2-1 tri-Y design that terminates with True Merged Collector with a 2.5-inch outlet. Skunk2's Alpha Header also include 02 bungs for OEM and aftermarket sensors. Each header is constructed from stainless steel with mandrel-bent tubing for strength, corrosion resistance, and durability. The Skunk2 Alpha D-Series header also includes a donut gasket and a weld on exhaust flange, this included flange can be utilized as an option to weld the Alpha Header to an aftermarket exhaust. These features, paired with Skunk2's unique design specs, provide an extremely broad powerband that's applicable to a wide range of engine sizes and configurations. Alpha Series Headers also feature specific sized primary tubes to achieve optimum overall and peak power. By sizing the primary tubes diameter, Skunk2 is able to maintain the highest possible exhaust gas speed throughout the header, which improves mid-range power and throttle response significantly. Skunk2's Alpha Series Header provides the perfect combination of top-end power without sacrificing mid-range performance or throttle response. The Alpha Header will pair up perfectly with the Kraftwerks D-Series Supercharger Kit., and has all the clearance needed for a great fit.

Features

  • Designed to maximize exhaust flow
  • Provide higher torque and increased horsepower
  • Able to maintain the highest speed of the exhaust gas ensuring better throttle response and mid-range power
  • Sequentially paired, equal-length, stepped primaries
  • The smallest primary tubes for optimized peak and overall power
  • Backed by a one-year warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45730194325

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 1040 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Cheryl
Bozeman, US
★★★★★ 5
You won't be sorry
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Great padding for comfort and terrific warmth. I bought a pair of Acorns 30 years ago and still have them. Updated to a new color and now feel the benefit of newer padding! I used the sizing listed for shoes and like the roominess for thicker sox. Well made and a joy to put on. (Wisconsin)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
B
Verified Purchase
Bureau of Review
New York, US
★★★★★ 5
Great Slippers
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Comfy, great price, looks great, fits well, size aligned, great quality. Love these slippers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 5
Extremely comfortable, leather sole. Hard to find a style.
Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue, Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue
Totally worth the price. This type of style is very hard to find, my husband had another pair a few years ago that he was never able to replace. These fit his wide feet and are very comfortable. The elastic at the ankle is not too tight. So glad I was able to find him a replacement. We bought the blue in a size 12. Love the fact that they are washable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
M
Verified Purchase
Michael Arnhold
Carnegie, US
★★★★★ 5
Very comfortable Slippers. Great buy!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
I bought these to replace a pair of slippers that I have had for years that are very similar to the slippers I bought, but I had worn a hole in the leather on mine, so I had to find something new and similar. These slippers are worth the money they are very comfortable, and I am sure they will last for years. They are a little tight around the ankle cuff but they are still new and I am sure they will wear in a little more when I start wearing them more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2025
J
Verified Purchase
Jenn
Chelsea, US
★★★★★ 3
Great slippers but disappointing quality.
Size: 7.5-8.5 Women/6-7 Men, Color: Ash, Size: 7.5-8.5 Women/6-7 Men, Color: Ash
Extremely comfortable, attractive slippers but the stitching came loose on both leather trim areas almost immediately. I tried to sew/glue down the stitching (as seen in photo) but it kept unraveling. Disappointing as these slippers are great in every other way (though they do run a bit big...I wear a 9 but ended up with a 7.5-8.5 which fits with a bit of room to spare even with thick socks). I just hope they hold up after my latest attempt to stop the thread from pulling out any more as I do really love wearing them. Perhaps I just got a bum pair?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2024

recommand products