YOSHIMURA 4407634 Silencer Muffler Exhaust Slip

( Brand: Yoshimura ), ( Manufacturer Part Number: 4407634 ), ( Mounting Style: Slip-on ), ( Type: Muffler ), ( Color: Black ), ( Material: Carbon, Carbon Fiber ), ( Placement On Vehicle: Exhaust ), ( Country Of Origin: Japan )

Review YOSHIMURA Slip On Silencer Muffler Exhaust Honda fits R77 CBR300R CBR300

The **Yoshimura R77 Slip Silencer Muffler (Part #4407634)** is a meticulously engineered aftermarket exhaust component designed exclusively for the Honda CBR300R and CBR300, offering a perfect blend of performance, precision, and aesthetic appeal. Crafted from high-quality stainless steel, this slip muffler is built to withstand the rigors of high-performance riding while delivering an exhilarating exhaust note that enhances the sporty character of your bike. The R77 series is renowned for its seamless integration with stock systems, ensuring a hassle-free installation process that requires minimal modifications to the stock exhaust. Its slip-on design allows for easy removal and replacement, making it an ideal choice for riders who appreciate both convenience and performance. The Yoshimura R77 features a carefully tuned internal baffling system that optimizes exhaust flow, reducing backpressure while producing a deep, resonant growl that accentuates the CBR300R s aggressive yet refined nature. Whether you're cruising on the open road or pushing the limits on the track, this muffler enhances throttle response and power delivery, making every ride more engaging. The polished stainless steel finish not only adds a touch of sophistication to your bike s appearance but also ensures long-term durability against corrosion and wear. Backed by Yoshimura s reputation for quality and innovation, this slip silencer muffler is a standout upgrade for enthusiasts seeking a balance between performance gains and a refined exhaust tone. Perfect for both street and track use, the R77 is a testament to Yoshimura s commitment to delivering components that elevate the riding experience without compromising on craftsmanship.

### Pros and Cons of buying a Yoshimura 4407634 R77 Slip Silencer Muffler Exhaust for the Honda CBR300R/CBR300

1. **Performance Enhancement** The Yoshimura R77 slip-on muffler is designed to improve exhaust flow, which can reduce backpressure and allow the engine to breathe more efficiently. This often results in a slight increase in horsepower and throttle response, particularly noticeable in mid-range power delivery.

2. **Sound Character** The R77 series is known for producing a deep, aggressive exhaust note that is louder and more pronounced than stock. This can enhance the sporty, aggressive tone that many riders prefer, especially on sportbikes like the CBR300R/CBR300.

3. **Compatibility** Yoshimura exhaust systems are engineered to fit Honda CBR300R/CBR300 models without major modifications. The slip-on design makes installation relatively straightforward, though some basic tools and mechanical knowledge may be required.

4. **Durability** Yoshimura exhausts are built with high-quality materials, including stainless steel construction, which resists corrosion and wear better than some aftermarket alternatives. The R77 series is particularly well-regarded for longevity.

5. **Aesthetic Appeal** The R77 muffler has a sleek, aggressive design that complements the sporty look of the CBR300R/CBR300. It stands out from stock exhausts, giving the bike a more customized appearance.

6. **Aftermarket Support** Yoshimura is a well-established brand with a strong reputation in the motorcycle aftermarket. This means you ll find plenty of resources, reviews, and potential upgrades or modifications available for this system.

7. **Legal Considerations (in some regions)** Depending on local laws, some slip-on exhausts like the R77 may fall under "performance" rather than "street-legal" categories, allowing them to be used on the road without violating emissions regulations in certain areas. Always check local laws before purchasing.

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1. **Noise Levels** The R77 slip-on muffler is significantly louder than stock, often exceeding legal street-legal noise limits in many regions. This could result in fines or legal issues if ridden on public roads without proper modifications or compliance with local noise ordinances.

2. **Installation Complexity** While slip-on exhausts are generally easier to install than full systems, they still require removing the stock exhaust, sealing gaps properly, and ensuring a secure fit. Improper installation can lead to leaks, rattles, or even damage to the bike s undercarriage.

3. **Potential Backfire Risk** Some riders report occasional backfires or pinging when using slip-on exhausts, particularly if the engine is not properly tuned or if the system is not installed correctly. This can be annoying and may require adjustments to resolve.

4. **Cost** The Yoshimura R77 slip-on muffler is priced higher than stock exhausts, and installation may require additional parts (e.g., gaskets, clamps, or even a new catalytic converter if required by law). Over time, this can add up in cost compared to simpler modifications.

5. **Maintenance and Corrosion** While Yoshimura exhausts are durable, they are exposed to the elements and can develop rust or corrosion over time, especially in wet or salty environments. Regular cleaning and inspection are recommended to maintain performance and appearance.

6. **Limited Power Gain** While the R77 does improve exhaust flow, the power gains are often modest (typically in the range of 2-5 horsepower) compared to more extensive modifications like full exhaust systems or engine tuning. For serious performance seekers, this may not be enough.

7. **Potential Emissions Issues** In regions with strict emissions regulations (e.g., California), aftermarket exhausts like the R77 may not be street-legal without additional modifications, such as a catalytic converter or tuning. This could limit where the bike can be ridden legally.

8. **Resale Value Impact** Modifying your bike with aftermarket exhausts, especially ones that are louder or less common, can reduce its resale value. Buyers often prefer stock or easily reversible modifications when purchasing used bikes.

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The Yoshimura 4407634 R77 slip silencer muffler exhaust is an excellent choice for riders who prioritize performance, sound, and aesthetics on their Honda CBR300R/CBR300. It offers noticeable improvements in exhaust tone and slight power gains while maintaining durability and a sporty look. However, it is not without drawbacks, particularly regarding noise levels, legal restrictions, and installation requirements.

If you plan to ride primarily on private property, track, or in areas where noise laws are lenient, the R77 is a great upgrade. For street-legal use in noise-sensitive regions, you may need to pair it with a legal muffler or consider a quieter alternative. Additionally, if you value ease of installation and reversibility, you might weigh the pros and cons against simpler slip-ons or full exhaust systems.

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- You want a noticeable improvement in exhaust tone and slight performance gains.

- You ride mostly off-road, on private property, or in areas with relaxed noise laws.

- You appreciate the aggressive look and are willing to handle the installation process.

- You prioritize durability and brand reputation over cost savings.

- You need a street-legal exhaust that complies with local noise laws (e.g., a Yoshimura R77 with a legal muffler or a quieter slip-on like the R75).

- You prefer a full exhaust system for more dramatic power gains and a cleaner look.

- You are concerned about resale value or want reversible modifications.

- You lack experience with exhaust installations and prefer a simpler upgrade.

For most CBR300R/CBR300 owners looking for a balance of performance and aesthetics without excessive complexity, the Yoshimura R77 is a solid recommendation just ensure you account for legal and practical considerations before purchasing.

Details:

Free shipping via UPS or FedEx only. Definitely a better sound. Slip on exhaust R77. Will not use USPS.

Excellent condition used for a short time on 2023 Honda CBR300R.

part #: 4407634 price

• $540.00

specifications cyclemufflermo:

• for models: R77, Cbr300r, Cbr300
• for makes: Honda
• brand: Yoshimura
• mpn: 4407634
• mounting style: Slip-on
• type: Muffler
• color: Black
• material: Carbon, Carbon Fiber
• placement on vehicle: Exhaust
• country of origin: Japan

payments cyclemufflermo:

• money order
• credit card: Mastercard
• wallet: Google-pay
• other

seller cyclemufflermo:

• rating: 100.0%
• city: Portsmouth, Ohio
• # reviews: 2019

returns cyclemufflermo:

• policy: No Returns

general cyclemufflermo:

• Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Silencers, Mufflers Baffles
• condition: Used

offer cyclemufflermo:

• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: March 29, 2026
• best offers: True

shipping cyclemufflermo:

• cost: $0.00
• transit: 4-10 Days
• service: UPS Ground
• type: Calculated
• class: Standard
• carrier: UPS

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