Vibrant StreetPower FLAT BLACK Oval Muffler with Single 4in Outlet - 4in inlet I.D. (1154)

Regular price $193.99 USD Sale price $193.99 USD Regular price $242.99 USD
Sale 20.17% $49.00 USD (20.17%)
In Stock: 1
SKU: vib1154
Product Description

Universal Mufflers with Vibrant Performance Flat Black are ideal for going unnoticed and avoiding unwanted attention. Our "True Straight Through" internals have a perforated stainless steel tube that is covered in our superior, multi-layer sound-suppression materials. This combination allows maximum horsepower and unhindered flow while also producing a deep, low tone. Every Flat Black Muffler is 20" overall length (including the exhaust tips) and measures 5"H by 9"W by 15"L.


  • Universal Mufflers


  1. Stealthy Appearance: Flat Black finish for discreet cruising, ideal for evading unwanted attention.
  2. "True Straight Through" Internals: Stainless Steel perforated tube wrapped in premium multi-layer sound suppression materials.
  3. Enhanced Sound: Produces a low, deep tone without compromising on flow, ensuring maximum horsepower.
  4. Optimal Dimensions: Measures 5”H x 9”W x 15”L, with an overall length of 20” (including exhaust tips), offering a balanced size for various setups.
  5. Unrestricted Flow: Engineered to maintain unrestricted exhaust flow for optimal performance.
  6. Maximum Horsepower: Allows for the extraction of maximum horsepower without sacrificing sound quality.
  7. Quality Construction: Utilizes premium materials for durability, ensuring long-lasting performance.


Tip OD: 4.000"
Height: 5.000"
Width: 9.000"
Tip Length: 4.000"
Body Length: 15.000"
Overall Length: 20.000"
Tip Cut: Angle
Tip Wall: Single

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck items, will require up to 7 business days to ship due to size. i.e. hoods, trunks, body kits, etc.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers or apartment numbers will require signature if valued over $200.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

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