1. Exhaust System Kits Offered
  2. sku: 3396489344427622
  3. FMF 42390

FMF 42390 Racing Megabomb Header Steel

42390 Fmf Racing Megabomb Header Stainless Steel

( Brand: Fmf ), ( Part Type: Header ), ( Disclaimer: Item May Not Be Exactly As Pictured, Please Listing. ), ( Manufacturer Warranty: No Warranty ), ( Manufacturer Part Number: 42390 ), ( Option: Stainless Steel )

Review FMF Racing Megabomb Header Stainless Steel

The FMF Racing Megabomb Header for model number 42390 is a high-performance exhaust component designed to enhance the power and sound of your off-road motorcycle. This header is engineered for use with two-stroke engines and features a steel construction for durability and robustness.

The Megabomb Header is designed to provide improved exhaust flow and scavenging, which in turn increases engine performance. The header's unique design includes a large primary pipe that exits at the rear of the engine, followed by two smaller pipes that exit on each side. This design helps to reduce back pressure and allow for better exhaust gases expulsion, resulting in increased power and torque.

The header's steel construction ensures that it can withstand the rigors of off-road riding, providing long-lasting performance. The steel also helps to dissipate heat effectively, reducing the risk of thermal damage to the engine. The header comes with a protective coating to prevent corrosion and ensure a long lifespan.

The Megabomb Header also features a unique bomb-shaped collector that provides a smooth transition from the header pipes to the exhaust system. This design helps to reduce exhaust gas turbulence, which can lead to improved power and torque. The collector is also designed to be easily removable for maintenance or modification purposes.

The FMF Racing Megabomb Header 42390 is a must-have for any serious off-road rider looking to improve the performance of their two-stroke motorcycle. Its durable steel construction, improved exhaust flow, and unique bomb-shaped collector make it a top choice for those seeking maximum power and sound from their exhaust system.

Pros and Cons of Buying FMF Racing Megabomb Header (Part Number: FMF 42390) for Your Motorcycle

Introduction:

The FMF Racing Megabomb Header (Part Number: FMF 42390) is a popular aftermarket exhaust component known for its performance benefits. However, like any other aftermarket part, it comes with its advantages and disadvantages. In this analysis, we will discuss the pros and cons of investing in an FMF Racing Megabomb Header.

Pros:

1. Enhanced Power: One of the primary reasons riders choose to install a Megabomb Header is for the power gains. The header's design allows for improved exhaust flow, which can lead to an increase in horsepower and torque.

2. Lightweight: The FMF Racing Megabomb Header is made of high-quality steel, ensuring it is both durable and lightweight. This weight reduction can contribute to better overall motorcycle performance.

3. Improved Sound: The Megabomb Header produces a deep, rumbling exhaust note that many riders find appealing. This improved exhaust tone can add to the overall riding experience.

4. Heat Shielding: The header comes with heat shielding, which helps protect the rider from excessive exhaust heat. This can make for a more comfortable ride, especially on long journeys.

5. Easy Installation: The Megabomb Header is relatively easy to install, making it a popular choice among DIY enthusiasts. FMF Racing provides detailed instructions and support to help ensure a smooth installation process.

Cons:

1. Expensive: The FMF Racing Megabomb Header is a premium aftermarket part, and its price tag reflects that. Riders must consider whether the performance benefits are worth the investment.

2. Loud: While some riders enjoy the deep exhaust note produced by the Megabomb Header, others may find it too loud for their liking. This could potentially lead to noise complaints or even legal issues in certain areas.

3. Requires Additional Parts: To fully utilize the Megabomb Header, riders may need to purchase additional aftermarket parts, such as a high-performance exhaust system or a catalytic converter, which could increase the overall cost.

4. Potential Clearance Issues: Depending on the specific motorcycle model, there may be clearance issues with the Megabomb Header, particularly when installing it with aftermarket footpegs or other accessories.

Conclusion:

The FMF Racing Megabomb Header (Part Number: FMF 42390) offers several advantages, including power gains, weight savings, improved sound, and heat shielding. However, it also comes with potential disadvantages, such as cost, loudness, and potential clearance issues. Ultimately, whether or not the Megabomb Header is a worthwhile investment depends on the individual rider's preferences, budget, and motorcycle setup.

Recommendation:

For riders who prioritize performance and are willing to invest in a premium aftermarket part, the FMF Racing Megabomb Header could be an excellent addition to their motorcycle. However, those who are budget-conscious or prefer a quieter exhaust note may want to consider alternative options. As always, it is essential to thoroughly research the product and consult with experts to ensure a successful installation.

Details:

Reduces sound output as much 1.5dB. Product images are for reference only and may differ slightly from the actual item received. Product Brand: FMF Racing Manufacturer Part Number: 42390 Megabomb Header Produces long header torque and short over-rev.

part #: 42390 prices

  • $336.98-$569.19

specifications exhausterupt:

  • brand: Fmf
  • part type: Header
  • disclaimer: Item May Not Be Exactly As Pictured, Please Listing.
  • manufacturer warranty: No Warranty
  • manufacturer part number: 42390
  • option: Stainless Steel

general exhausterupt:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Exhaust System Kits

returns exhausterupt:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

seller exhausterupt:

  • city: Lake Havasu City, Arizona
  • rating: 99.8%
  • # reviews: 7789

offer exhausterupt:

  • sold: 0
  • quantity: 3
  • started: April 28, 2025
  • options: Ship-to-home
  • availability: In Stock

shipping exhausterupt:

  • type: Fixed
  • class: Economy
  • cost: $0.00
  • transit: 4-10 Days
  • service: Economy

payments exhausterupt:

  • credit card: Mastercard
  • wallet: Google-pay
  • other
part type: header, disclaimer: item may not be exactly as pictured, please listing., manufacturer warranty: no warranty, option: stainless steel,
category: motorcycle parts > motorcycle scooter parts accessories > exhaust emission systems > exhaust system kits, sku: 3396489344427622,

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  • New. Offer #3 priced at $569.19 + $80.59 delivery = $649.78* total. +$80.59 shipping

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