YAMAHA 89A-77154-00-00 Backup Plate Set 89A-77153-00-00 SY34

( Manufacturer Part Number: 89A-77154-00-00 ), ( Type: Exhaust Power Valve Plate )

Review YAMAHA Oem Backup Plate Set fits VMAX 500 1995

The **Yamaha 89A-77154-00-00 (1995 V-Max 500) Backup Plate Set**, paired with the **89A-77153-00-00 SY34**, represents a meticulously engineered aftermarket solution designed to enhance both the performance and longevity of Yamaha s legendary 1995 V-Max 500cc cruiser. This high-quality backup plate set is crafted to replace the factory-fitted components, ensuring a seamless fit while delivering superior durability and structural integrity. The **89A-77154-00-00** serves as the primary backup plate, a robust, heat-treated steel component engineered to withstand the immense forces exerted during high-speed cruising, aggressive acceleration, and heavy braking critical for maintaining stability and reducing stress on the V-Max s drivetrain. Its precise machining ensures an exact alignment with the transmission housing, minimizing wear and preventing premature failure, a common issue in high-mileage or heavily modified bikes.

Complementing this is the **89A-77153-00-00 SY34**, a specialized synchronizer hub assembly that works in tandem with the backup plate to optimize shifting performance. This component is designed to reduce backlash and improve gear engagement, making shifts smoother and more responsive, even under demanding conditions. The SY34 hub features a hardened steel construction with precision-ground surfaces, ensuring minimal friction and maximum durability over time. Together, these parts form a cohesive upgrade package that not only restores factory specifications but often exceeds them, catering to riders who demand reliability, precision, and long-term performance from their V-Max.

Ideal for both restoration projects and performance-oriented modifications, this backup plate set is a testament to Yamaha s engineering legacy, now refined through aftermarket innovation. Whether you re preparing your V-Max for a cross-country adventure, track day, or simply aiming to eliminate the dreaded "grinding" sensation during gear changes, this set provides a cost-effective yet high-performance solution. Built to endure the rigors of daily riding or extreme use, these components are a must-have for any serious owner looking to preserve the integrity of their bike s drivetrain while unlocking its full potential.

### **Pros and Cons of buying a Yamaha 89A-77154-00-00 (1995 V-Max Backup Plate Set) and SY34**

#### **Overview**

The **Yamaha 89A-77154-00-00** is a backup plate set for the **1995 Yamaha V-Max 500**, while the **SY34** appears to be a related or alternative part (possibly a secondary backup plate or a different model variant). These parts are essential for maintaining proper rear suspension function, braking performance, and overall safety. Below is a detailed breakdown of their pros and cons.

---

### **Pros**

1. **Authentic Fitment for the 1995 V-Max**

- The **89A-77154-00-00** is a **direct OEM replacement** for the backup plate assembly on the 1995 Yamaha V-Max 500. This ensures a perfect fit without modifications, reducing the risk of misalignment or improper function.

- The **SY34** (if compatible) may also be an OEM or high-quality aftermarket alternative, offering similar reliability.

2. **Critical for Rear Suspension & Braking**

- The backup plate set secures the rear suspension components (shock absorbers, swingarm, and brake calipers) in place. A worn or damaged plate can lead to **loose suspension, poor braking, or even a crash**.

- Replacing these parts restores proper function, improving ride quality and safety.

3. **Prevents Further Damage**

- If the original plates are **rusted, cracked, or missing**, they can cause **excessive wear on the swingarm bushings, axle, or brake system**. Replacing them early prevents costly damage to other components.

- The V-Max is a heavy bike (over 600 lbs when loaded), so suspension and braking integrity are crucial.

4. **Potential Cost Savings vs. Full Suspension Rebuild**

- Replacing just the backup plates is **far cheaper** than a full rear suspension overhaul. If the rest of the suspension is in good condition, this is a **low-cost, high-impact upgrade**.

- Avoids the need for **bushing replacements, axle machining, or swingarm repairs** that may arise from neglecting the plates.

5. **Easy Installation (DIY-Friendly)**

- The **89A-77154-00-00 set** typically consists of **two plates (left and right) and possibly bolts/nuts**. Installation is straightforward and can be done in **under an hour** with basic tools.

- No welding or machining required, making it accessible for most mechanics or experienced riders.

6. **Improves Ride Stability & Handling**

- A properly functioning rear suspension contributes to **better weight transfer, cornering stability, and braking performance**. This is especially important for a bike like the V-Max, which is heavy and often used for touring or long-distance rides.

- Reduces **suspension sag** and ensures the rear wheel stays aligned with the swingarm.

7. **Long-Term Reliability**

- Yamaha s OEM parts are **built to last**, especially if the bike is well-maintained. The **89A-77154-00-00** should hold up for **many years** if installed correctly.

- Avoids the risk of **cheap aftermarket parts failing prematurely**, which can lead to unexpected downtime.

8. **Compatibility with Other V-Max Years (If Applicable)**

- While this part is **specifically for the 1995 model**, some plates may be **similar to other years** (e.g., 1994-1996). Checking with a Yamaha parts manual or expert ensures you get the right fit.

---

### **Cons**

1. **Potential Rust or Wear on Original Parts**

- If the **original backup plates are already damaged**, they may **not remove cleanly**, requiring **grinding, welding, or cutting** to install new ones. This adds labor time and cost.

- In extreme cases, **bushings or the swingarm itself may be worn**, requiring additional repairs beyond just the plates.

2. **Limited Availability & Lead Times**

- Order from a **specialty Yamaha dealer**.

- Purchase from a **used parts marketplace** (eBay, Facebook Marketplace, etc.), which may come with **unknown condition risks**.

- The **SY34** (if an aftermarket part) might have **longer lead times** or require verification of quality.

3. **Cost Compared to Aftermarket Alternatives**

- **OEM parts are expensive** the **89A-77154-00-00 set** typically costs **$100 $200 **, depending on the source.

- **Aftermarket alternatives** (e.g., **SY34 or other brands**) may be **cheaper (e.g., $50 $100)** but could have **mixed reviews on durability**.

- If you re unsure about quality, **third-party parts might not last as long** as OEM.

4. **Installation Challenges for Beginners**

- **Proper torque specifications** (over-tightening can strip bolts).

- **Alignment checks** (misaligned plates can cause suspension issues).

- If you re **not comfortable with bike mechanics**, hiring a shop may add **$50 $150 in labor costs**.

5. **Possible Misidentification of Part Needs**

- **Rear brake backing plates** (different part numbers).

- **Swingarm bushings or axle nuts**.

- Ordering the wrong part **wastes money** and delays repairs.

6. **Environmental Factors Affecting Longevity**

- If the bike is **stored in a damp or corrosive environment**, the **new plates may rust prematurely** unless properly treated (e.g., **anti-seize compound, rust inhibitors**).

- **Road salt, mud, and debris** can accelerate wear if not cleaned regularly.

7. **Potential for Counterfeit Parts**

- **Not fit correctly**.

- **Fail under load**.

- **Have poor material quality**.

- Always **verify authenticity** (check part numbers, purchase from reputable sellers).

---

### **Conclusion & Recommendation**

#### **Should You Buy the Yamaha 89A-77154-00-00 (or SY34) Backup Plate Set?**

- Your **1995 V-Max s backup plates are visibly damaged, rusted, or missing**.

- You **prioritize OEM quality and long-term reliability** (the 89A-77154-00-00 is the safest choice).

- You re **willing to pay the higher cost** for peace of mind.

- You **plan to install it yourself** (or have a mechanic do it properly).

- You **can t find the OEM part** and must use an aftermarket option (e.g., SY34), but **research reviews first**.

- Your **budget is tight** look for **used OEM parts** (check for rust/cracks) or **trusted aftermarket brands**.

- You **suspect other suspension components (bushings, swingarm) are worn** address those first to avoid repeated issues.

#### **Best Course of Action**

1. **Inspect the Current Plates**

- Remove and examine them for **cracks, excessive rust, or deformation**. If they re **beyond repair**, replacement is necessary.

- Check the **swingarm bushings and axle** if they re worn, replace them alongside the plates.

2. **Source the Parts Correctly**

- Buy from a **Yamaha-authorized dealer** or a **trusted parts distributor** (e.g., **Cycle World, Cycle Gear, or local Yamaha shops**).

- Avoid **random online sellers** unless they have **verified feedback**.

- Check **forums (e.g., V-Max Owners Club, Cycle World forums)** for recommendations.

- Ensure the part is **properly rated for the V-Max s weight and load**.

3. **Install Properly**

- Follow **Yamaha s service manual** for torque specs and alignment.

- Use **anti-seize compound** on bolts to prevent future seizing.

- **Test ride carefully** after installation to ensure no unusual noises or sag.

4. **Maintain the Suspension**

- **Regularly clean and lubricate** the swingarm and bush

Details:

This backup plate set is in very good condition and shows normal signs of wear. 1995 Yamaha Vmax 500 Oem Backup Plate Set 89A-77153-00-00 SY34. Removed From: 1995 Yamaha VMAX 500 with miles. Change your mind, don't need the part, or just wan't what you are looking for.

part #: 89a771540000 price

• $29.99

specifications exhaustsnowmobilee:

• for models: Vmax, 500
• for makes: Yamaha
• for years: 1995
• mpn: 89a-77154-00-00
• type: Exhaust Power Valve Plate

returns exhaustsnowmobilee:

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

general exhaustsnowmobilee:

• condition: Used
• Parts Accessories > Snowmobile Parts > Exhaust

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seller exhaustsnowmobilee:

• city: Eau Claire, Wisconsin
• # reviews: 37499
• rating: 99.6%

offer exhaustsnowmobilee:

• best offers: True
• started: February 24, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

shipping exhaustsnowmobilee:

• carrier: USPS
• type: Fixed
• cost: $0.00
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• class: Expedited

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