1. Motorcycle Silencers, Mufflers & Baffles For Sale
  2. sku: 15866099916079751
  3. SUZUKI USPT663802

SUZUKI USPT663802 Left Inner Exhaust Muffler Triple

fits model: Gt, 550. make: Suzuki. year: 1973.

Uspt663802 Suzuki 1973 Gt 550 Left Side Inner Exhaust Muffler 2 Stroke Triple

( Manufacturer Part Number: USPT663802 ), ( Sub-type: Slip-on Exhausts Silencers ), ( Type: Muffler ), ( Countryregion Of Manufacture: Japan ), ( Intended Use: Replacement Part )

Review SUZUKI Left Side Inner Exhaust Muffler Stroke Triple fits GT 550 1973

The **Suzuki US-P663802 1973 GT550 Left Inner Exhaust Muffler (Triple Pipe)** is a meticulously crafted, high-performance replacement component designed to restore or enhance the iconic growl and raw power of your classic Suzuki GT550. Crafted from premium-grade stainless steel, this muffler is built to withstand the intense heat and pressure generated by the engine s aggressive exhaust flow, ensuring durability and longevity even under demanding riding conditions. The triple-pipe configuration, a hallmark of the GT550 s legendary exhaust system, delivers a deep, resonant tone that resonates with purists and enthusiasts alike, embodying the unmistakable character of Suzuki s mid-1970s sportbike era. This left inner muffler is engineered to fit seamlessly with the original right inner and center mufflers, maintaining the symmetrical balance of the exhaust system while preserving the bike s vintage aesthetic. Whether you re restoring a show-worthy classic or fine-tuning a high-performance street or track machine, this muffler ensures a perfect blend of authenticity and performance. Its robust construction and precise fitment make it an ideal choice for riders who demand both heritage and power, allowing the GT550 s naturally aspirated V-twin to breathe freely while producing a throaty, exhilarating exhaust note that turns heads and turns up the volume on every ride.

### Pros and Cons of Buying a Suzuki USPT663802 (1973 GT550 Left Inner Exhaust Muffler/Triple)

#### **Pros:**

1. **Authenticity and Originality** This is an original, factory-made muffler for a 1973 Suzuki GT550, ensuring a perfect fit and historical accuracy. Aftermarket parts may not match the original design or sound as closely.

2. **Sound Quality** Suzuki s original exhaust components, especially from the early 1970s, are known for their distinctive, aggressive tone. Restoring or replacing with an authentic part preserves or enhances the bike s classic exhaust note.

3. **Reliability** Factory parts are built to last, especially if the muffler is in good condition. They are less likely to fail prematurely compared to poorly made aftermarket alternatives.

4. **Resale Value** Keeping original components can increase the bike s appeal to collectors and enthusiasts who prioritize authenticity. This is particularly valuable for show bikes or restoration projects.

5. **Ease of Installation** Since it s a direct replacement, installation is straightforward if you have basic mechanical skills or access to a mechanic familiar with Suzuki bikes.

6. **Compatibility with Modifications** If you plan to modify the exhaust system later, having an original part ensures that aftermarket upgrades (like headers or larger mufflers) will integrate more smoothly.

7. **Avoiding Counterfeit Parts** Some aftermarket parts, especially for vintage bikes, may be poorly made or even fakes. An original Suzuki part guarantees quality and authenticity.

#### **Cons:**

1. **Age and Wear** A 1973 muffler may show signs of rust, corrosion, or internal damage from decades of use. It may require cleaning, polishing, or even replacement of internal components (like baffles or liners).

2. **Potential for Leaks** Older exhaust systems can develop leaks at gaskets, welds, or mounting points. This could lead to noise violations or reduced performance if not addressed.

3. **Limited Availability** Finding an exact replacement may be challenging, especially if the muffler is damaged or missing. You may need to source it from a specialist dealer, online marketplaces, or a restoration shop.

4. **Cost** Original Suzuki parts, especially for vintage models, can be expensive. Depending on condition and demand, this muffler may cost significantly more than a new aftermarket alternative.

5. **Noise Regulations** Some areas have strict noise laws for motorcycles. While the GT550 s original exhaust is loud by modern standards, it may exceed legal limits in certain jurisdictions, requiring additional modifications (like a muffler delete or aftermarket silencer).

6. **Maintenance Requirements** Rust and corrosion are common in older exhaust systems. You ll need to inspect and maintain it regularly to prevent leaks or failures.

7. **Weight** Original exhaust components are often heavier than modern or aftermarket alternatives. This can slightly reduce handling agility, though the difference is minimal on a bike like the GT550.

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### **Conclusion:**

Buying an original **Suzuki USPT663802 (1973 GT550 left inner exhaust muffler/triple)** is ideal if you prioritize authenticity, historical accuracy, and the classic sound of the bike. It s a great choice for collectors, restorers, or enthusiasts who want to preserve the bike s original character. However, you must account for potential issues like rust, leaks, or high cost. If the muffler is in poor condition, it may be more cost-effective to restore or replace it rather than keep a failing original.

If you re open to alternatives, aftermarket mufflers (from brands like **B&M, Akrapovi , or vintage-style silencers**) can offer similar sound profiles at a lower cost while potentially being more reliable. But for purists, the original part is unmatched in terms of authenticity and heritage.

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### **Recommendation:**

- **If restoring or keeping the bike as-is:** Purchase the original muffler if you can find one in good condition. Clean it thoroughly, check for leaks, and consider replacing internal components if necessary. This ensures the bike stays true to its original specification.

- **If prioritizing performance or modern compliance:** Consider a high-quality aftermarket muffler that mimics the original sound while being more durable and legal in your area. Brands like **B&M or Akrapovi ** offer options that retain the GT550 s aggressive tone.

- **If budget is a concern:** Look for a used original muffler in decent condition from a trusted seller. Alternatively, a well-made aftermarket replacement may be a more practical long-term solution.

- **Always check local laws:** Ensure the exhaust meets noise regulations, especially if you plan to ride the bike legally on public roads.

Ultimately, the choice depends on whether you value authenticity over convenience and whether the cost and effort justify the original part. For most riders, a balance between originality and practicality often works best.

Details:

When I shake the pipe there are loose baffle pieces inside. The baffle/stinger is NOT included with this pipe. This is the lefty side inner exhaust for cylinder. Those could be left alone or removed.

It is in fair condition externally, with some Chrome etching and minor surface rust but no holes. This is from my 1973 Suzuki Gt55.

part #: uspt663802 prices

  • $100.00-$225.00

specifications cyclemufflermo:

  • for models: Gt, 550
  • for makes: Suzuki
  • for years: 1973
  • mpn: Uspt663802
  • sub-type: Slip-on Exhausts Silencers
  • type: Muffler
  • countryregion of manufacture: Japan
  • intended use: Replacement Part

payments cyclemufflermo:

  • wallet: Paypal
  • other
  • credit card: Visa

shipping cyclemufflermo:

  • class: Standard
  • type: Calculated
  • cost: $31.60
  • service: USPS Ground Advantage
  • transit: 5-11 Days
  • carrier: USPS

general cyclemufflermo:

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

returns cyclemufflermo:

  • policy: No Returns

offer cyclemufflermo:

  • availability: In Stock
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: June 4, 2026

seller cyclemufflermo:

  • # reviews: 151
  • rating: 100.0%
  • city: Anaheim, California
for models: gt, 550, for makes: suzuki, for years: 1973, sub-type: slip-on exhausts silencers, type: muffler, countryregion of manufacture: japan, intended use: replacement part,
category: motorcycle parts > motorcycle scooter parts accessories > exhaust emission systems > silencers, mufflers baffles, sku: 15866099916079751,
Suzuki USPT663802 Is Similar To:
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2 offers $100.00–$225.00 USD
  • Used. Offer #1 priced at $225.00 + $31.60 shipping estimate = $256.60* total. Good overall condition, please see pictures. I am selling the entire exhaust system from my 1973 Suzuki gt550 in good working condition.+$31.60 shipping
  • Used. Offer #2 priced at $100.00 + $31.60 shipping estimate = $131.60* total. The baffle/stinger is NOT included with this pipe. This is from my 1973 Suzuki gt55.+$31.60 shipping

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