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Supertrapp 405-3046 4" Polished Stainless Steel Open End Cap

4.8 out of 5 stars 8 customer reviews

Price: $29.92 & FREE Shipping on orders over $49. Details
In stock but may require an extra 1-2 days to process.
Ships from and sold by Amazon.com.
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  • Open end cap for closed course competition only
  • For 4in. Disc Series
15 new from $24.99
$29.92 & FREE Shipping on orders over $49. Details In stock but may require an extra 1-2 days to process. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Supertrapp 405-3046 4" Polished Stainless Steel Open End Cap
  • +
  • Supertrapp 404-6512 4" Diffuser Disc - Pack of 12
  • +
  • Supertrapp Disc Bolts 6 PK Disc Based Exhausts
Total price: $90.51
Buy the selected items together


Product Information

Technical Details

Brand Supertrapp
Model 405-3046
Item Weight 1.6 ounces
Product Dimensions 45 x 45 x 12 inches
Item model number 405-3046
Manufacturer Part Number 4053046
OEM Part Number 405-3046

Additional Information

ASIN B0006HNS6K
Customer Reviews
4.8 out of 5 stars 8 customer reviews

4.8 out of 5 stars
Best Sellers Rank #288,632 in Automotive (See top 100)
#438 in Automotive > Performance Parts & Accessories > Exhaust System > Mufflers
#636 in Automotive > Replacement Parts > Exhaust & Emissions > Mufflers
#1,956 in Automotive > Performance Parts & Accessories > Exhaust System > Complete Kits
Shipping Weight 2.4 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available January 30, 2007

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Open end cap for closed course competition only
For 4in. Disc Series

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
Supertrapp disc systems are a great way to adjust and tune your exhaust back pressure and sound. This open end cap allows more volume and lower back pressure without adding a very-large amount of discs. For use on my Harley Dyna, it was the perfect touch, providing great performance and just the right amount of volume. Not too loud or too quiet.
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Verified Purchase
Fit and finish are perfect. It is stainless, so it tends to turn gold from the heat of the exhaust. I think it looks good that way.

It feels like it gives slightly better top end and midrange as opposed to the closed end cap. Sound is definitely deeper without being obnoxiously loud. I like it.
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Verified Purchase
This makes the bike sound so much better. I didn't notice a change in power, I like torque & was expecting to lose a little and gain a little horse power, the change wasn't noticeable to me but I love the sound. It doesn't look too bad, I know you can pay more for an end cap that looks nicer.
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By CdnBacon on October 5, 2013
Verified Purchase
This end cap fits and gets the job done, it is light duty compared to the solid end cap, thinner metal with more of a brushed look.
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Supertrapp 405-3046 4" Polished Stainless Steel Open End Cap
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