When it comes to Yamaha RD motorcycles, one component that immediately stands out is the escapamento RD, or RD exhaust system. More than just a mechanical part, the exhaust plays a vital role in defining how the bike feels, sounds, and performs. For riders, it becomes part of the identity of their machine—shaping not only acceleration but also the unmistakable two-stroke growl that makes RD models legendary.
Understanding the escapamento RD is important for anyone who owns, restores, or rides one of these bikes. It affects power delivery, fuel efficiency, style, and even rider satisfaction. This guide explores everything you need to know—from origins and types, to performance, materials, installation, care, and how to choose the right exhaust for your needs.
Understanding Escapamento RD
The phrase escapamento RD refers specifically to the exhaust systems designed for Yamaha’s RD line of motorcycles, which gained huge popularity in the 1970s and 1980s. These bikes were known for their lightweight two-stroke engines and exciting performance. The exhaust system was, and still is, one of the defining features that gives the RD its edge.
In a two-stroke engine, the exhaust does far more than remove gases. It is carefully designed to optimize engine breathing, recycling part of the exhaust pressure to boost power at specific RPM ranges. For the RD, this meant crisp acceleration and a signature sound that riders still chase today.
The escapamento RD is more than a functional part; it’s also tied to the motorcycle’s history. Many collectors see the original exhausts as part of the RD’s authenticity, while modern riders often upgrade to performance or custom versions to suit their riding style.
Types of Escapamento RD
Over the years, several types of escapamento RD have become common. Each offers its own strengths and trade-offs, making the choice highly personal.
Original exhausts, also called OEM systems, are valued by collectors for maintaining the bike’s originality. Sport exhausts, known as esportivos, are popular among enthusiasts who want sharper acceleration and a louder, more aggressive note. Custom exhausts allow riders to experiment with design and sound, often blending style with function.
Pros and Cons of Different Types
| Type of Escapamento RD | Advantages | Drawbacks | Best For |
| Original (OEM) | Authentic look, preserves resale value, reliable fitment | Limited performance, harder to find | Collectors, restorers |
| Sport (Esportivo) | Stronger performance, louder iconic sound, lighter weight | Can be noisy, may reduce originality | Daily riders, racers |
| Custom | Unique style, tailored sound, creative designs | Quality varies, may require tuning | Enthusiasts who want personalization |
The choice depends on whether you value authenticity, performance, or individuality.
Performance and Sound Characteristics
One of the main reasons riders pay attention to the escapamento RD is its influence on performance. A well-designed exhaust can noticeably improve power delivery, making the motorcycle feel livelier and more responsive. On two-stroke engines like the RD 135 or RD 350, the exhaust helps shape how power comes in across the rev range.
Equally important is the sound. RD motorcycles are famous for their raspy, high-pitched exhaust note, which is instantly recognizable to anyone who grew up around them. The design of the exhaust chambers amplifies this character, giving riders a sensory experience that goes beyond speed alone.
Tuning is essential, however. A poorly matched exhaust can lead to excessive noise, poor fuel efficiency, or uneven power. Riders often seek a balance that delivers strong performance without compromising comfort on longer rides.
Materials and Design Features
The choice of materials in an escapamento RD affects more than looks. It impacts weight, durability, and even sound.
- Steel: Traditional and affordable, but prone to rust.
- Stainless steel: Durable and resistant to corrosion, making it popular for riders who want longevity.
- Aluminum: Lightweight and stylish but less durable under stress.
- Carbon fiber: High-end option with modern aesthetics, excellent weight savings, but more expensive.
Comparison of Materials
| Material | Durability | Weight | Style | Cost |
| Steel | Medium | Heavy | Classic | Low |
| Stainless Steel | High | Medium | Modern | Medium |
| Aluminum | Medium | Light | Sporty | Medium |
| Carbon Fiber | High | Very Light | Premium | High |
Design features also matter. Expansion chambers, end-can shapes, and weld finishes all contribute to how the exhaust performs and looks. Riders often see the exhaust as a piece of art as much as a performance part.
Installation and Compatibility
Choosing and installing an escapamento RD requires careful attention to compatibility. Not every exhaust fits every RD model, so checking specifications is essential. For example, the RD 135, RD 350, and other versions may have slightly different fitment requirements.
Before purchase, riders should confirm pipe diameter, mounting points, and clearance. Proper installation ensures smooth performance and prevents common issues like leaks or misalignment.
For smoother installation:
- Always check if the exhaust is designed for your specific RD model.
- Use quality gaskets and clamps to avoid leaks.
- If unsure, consider professional installation to avoid costly mistakes.
Maintenance and Care
Like any motorcycle part, the escapamento RD needs regular care to last. Cleaning away dirt, oil, and road debris helps prevent corrosion. Stainless steel and carbon fiber models are easier to maintain, while steel requires extra attention against rust.
Routine inspection is important. Riders should look for cracks, leaks, or unusual sounds that may signal damage. Small repairs, like welding or sealing, can extend life, but in some cases replacement is more practical.
To maintain performance:
- Clean the exhaust regularly with appropriate products.
- Inspect welds and mounting points.
- Replace worn gaskets promptly.
Choosing the Right Escapamento RD for You
The best exhaust depends on your riding style and priorities. Daily riders may prefer a sport exhaust for better throttle response, while collectors often stick with original systems to preserve value. For racing, lightweight and tuned designs offer the best results.
Balancing budget with expectations is also key. A higher-quality stainless steel or carbon fiber exhaust costs more but often pays off in longevity and performance.
Riders typically source escapamentos RD through:
- Specialized motorcycle shops.
- Online marketplaces for vintage parts.
- Enthusiast forums and collector groups.
Each source has pros and cons. Shops offer professional advice, while online sellers may provide more variety. Enthusiast groups can be valuable for finding rare original systems.
Conclusion
The escapamento RD is far more than an exhaust system—it’s the heart of what makes Yamaha RD motorcycles iconic. From shaping performance and producing the unforgettable two-stroke sound, to influencing style and authenticity, the exhaust is central to the bike’s character.
Choosing the right escapamento RD comes down to understanding your goals, whether they are originality, improved performance, or personal expression. With proper care, installation, and attention to detail, an RD exhaust can keep delivering excitement and nostalgia for years to come.
For riders and collectors alike, the escapamento RD is a reminder that sometimes the most powerful part of a motorcycle isn’t just the engine, but the way it breathes and sounds on the open road.
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