SPORTS PARTS INC 1504-S276849-64 Spi Front Gas Suspension Shock Exciter

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 1504-S276849-64 ), ( Part Type: Suspension Shock )

Review SPORTS PARTS INC Spi Front Gas Suspension Shock Yamaha Exciter Snowmobile fits EX570 1987–1988

The **SPI Front Gas Suspension Shock (Part #1504-S276849-64)** is a high-performance, precision-engineered replacement shock absorber designed specifically for the **1987 1988 Yamaha EX570 Exciter**, a classic adventure bike known for its rugged reliability and off-road capability. This front suspension shock is a direct-fit, OEM-quality upgrade that restores or enhances the handling, comfort, and durability of your Exciter, ensuring it performs as intended by Yamaha while incorporating modern advancements in gas-charged shock technology. Built with a **high-pressure nitrogen gas charge**, this shock eliminates air bubbles and internal slippage, delivering consistent damping performance across rough terrain, potholes, and varied road conditions. The **spiral-wound valve system** provides smooth, progressive resistance, allowing for better control during aggressive cornering, while the **adjustable preload** enables riders to fine-tune the suspension stiffness to match their weight, riding style, and load whether cruising solo or carrying a passenger and luggage. Constructed from **high-grade steel and durable elastomers**, the shock is engineered to withstand the demands of both on-road and off-road use, resisting oil leakage, corrosion, and wear over extended periods. Its **sealed, maintenance-free design** ensures longevity, while the **rubber-mounted eyelets** and **reinforced mounting points** guarantee a secure, vibration-dampening connection to the bike s frame, reducing fatigue and improving overall ride stability. Whether you're tackling gravel roads, light trails, or urban commutes, this SPI shock delivers a **smoother, more responsive ride** with reduced body roll and improved traction, making it an essential upgrade for any Exciter owner seeking to revive or enhance their bike s performance. Backed by SPI s reputation for quality and compatibility, this shock is a straightforward, bolt-on solution that bridges the gap between vintage reliability and modern suspension technology.

### **Pros and Cons of buying a Sports 1504-S276849-64 SPI Front Gas Suspension Shock for a 1987-1988 Yamaha EX570 Exciter**

#### **Pros**

1. **Improved Ride Comfort and Handling**

The SPI (Special Performance International) front gas shock is designed to enhance suspension performance, reducing harshness over rough terrain while maintaining better control. For an older dual-sport bike like the EX570, this can make long rides more comfortable and improve stability at higher speeds.

2. **Better Damping Control**

Gas shocks provide more consistent damping than traditional oil shocks, reducing rebound and bottoming out on rough surfaces. This is particularly useful for off-road riding, where the EX570 s stock suspension may feel sluggish or overly stiff.

3. **Compatibility with Aftermarket Modifications**

The EX570 is a popular bike for customization, and upgrading to a gas shock aligns well with other performance mods (e.g., aftermarket forks, exhaust, or engine tuning). A high-quality shock like the SPI can complement these changes without causing conflicts.

4. **Durability and Longevity**

SPI shocks are known for their robust construction, often featuring reinforced seals, high-quality valving, and corrosion-resistant materials. This can extend the life of the suspension compared to stock units, which may degrade over time, especially in wet or dusty conditions.

5. **Enhanced Off-Road Capability**

The EX570 was designed for adventure riding, but its stock suspension can feel stiff or unresponsive on technical trails. A gas shock with adjustable preload or rebound damping can help the bike absorb bumps better, improving traction and control in off-road scenarios.

6. **Easier Installation**

The SPI shock is a direct replacement for the stock unit, meaning no major modifications to the bike s frame or suspension linkage are required. Installation typically involves removing the old shock, installing the new one, and adjusting the preload (if applicable).

7. **Value for Money**

Compared to some high-end aftermarket shocks, the SPI offers a balance of performance and affordability. It s a cost-effective way to upgrade suspension without breaking the bank, especially for a bike that s already several decades old.

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#### **Cons**

1. **Potential Compatibility Issues**

While the SPI shock is designed for the EX570, there s always a risk of fitment problems, particularly if the bike has been heavily modified (e.g., lowered or raised suspension, custom linkages, or aftermarket forks). A thorough inspection or consultation with a mechanic may be necessary before purchase.

2. **Limited Adjustability (Stock Version)**

The standard SPI shock may not offer extensive adjustability (e.g., compression/rebound damping adjustments). If you want fine-tuned suspension tuning, you might need to invest in a more advanced shock with adjustable damping, which could increase the cost.

3. **Quality Control Concerns**

As with any aftermarket part, there s a chance of receiving a defective unit. SPI is generally reputable, but if the shock fails prematurely, it could disrupt riding plans and require additional costs for replacement or repair.

4. **Maintenance Requirements**

Gas shocks require periodic maintenance, such as checking and topping up gas pressure, inspecting seals for leaks, and cleaning the shock body to prevent corrosion. Neglecting maintenance can lead to reduced performance or failure.

5. **Weight Consideration**

Gas shocks are slightly heavier than oil shocks, which could marginally affect the bike s handling, especially in agile off-road maneuvers. However, the difference is usually negligible for most riders.

6. **Resale Value Impact**

While upgrading the suspension can improve your riding experience, it may not significantly boost the bike s resale value. Buyers often prioritize the bike s originality or condition over aftermarket parts, so this is more of a personal consideration than a practical drawback.

7. **Learning Curve for Adjustment**

If the shock includes adjustable preload or damping, you may need to experiment to find the optimal settings for your riding style and conditions. Poorly adjusted suspension can actually degrade performance rather than improve it.

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### **Conclusion**

Upgrading your 1987-1988 Yamaha EX570 s front suspension with the **Sports 1504-S276849-64 SPI gas shock** is a worthwhile investment for riders who prioritize comfort, control, and off-road capability. The shock addresses the EX570 s aging suspension system, offering better damping, durability, and compatibility with aftermarket mods. However, it s not a perfect solution potential drawbacks include limited adjustability, maintenance needs, and the risk of fitment issues if the bike has been heavily customized.

For most riders, the benefits outweigh the drawbacks, especially if you plan to use the bike for adventure touring or off-road riding. If you re unsure about the fit or want more tuning options, consulting with a suspension specialist or mechanic before purchasing is advisable.

### **Recommendation**

- You ride the EX570 on rough or varied terrain and want a smoother, more responsive ride.

- You ve researched fitment and are confident it will work with your bike s current setup.

- You re willing to perform basic maintenance to ensure longevity.

- You re open to upgrading other suspension components (e.g., rear shock) for a more balanced ride.

- You re on a tight budget and can t afford potential maintenance or replacement costs.

- The bike has extensive aftermarket modifications that might conflict with the shock s installation.

- You prefer minimal changes to the bike s originality and don t prioritize suspension upgrades.

**Final Verdict:** The SPI shock is a solid, practical upgrade for the EX570, offering tangible improvements without excessive complexity. For the average rider, it s a recommended purchase to enhance the bike s performance and enjoyment.

Details:

Brand: Sports Parts Inc, model Number: 1504-S276849-64. I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. Compatibility: Years: Make: model: Application: Notes: 1997 - 1998 YamahaPZ480E Hazer SS Electric, 1987 1988 YamahaEX570 Exciter, 1990 1996 YamahaPZ480E II LE, 1991 1997 YamahaVT480 Venture XL, 1992 1993 YamahaVT480GT GT.

This is helpful if you are buying multiple items.

part #: 1504s27684964 price

• $120.77

specifications snowmobileshocksoi:

• for models: Ex570
• for makes: Yamaha
• for years: 1987-1988
• brand: Sports Parts Inc
• mpn: 1504-s276849-64
• part type: Suspension Shock

shipping snowmobileshocksoi:

• cost: $0.00
• type: Fixed
• transit: 3-6 Days
• class: Standard
• service: Standard

returns snowmobileshocksoi:

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

seller snowmobileshocksoi:

• rating: 99.9%
• city: Indiana, US
• # reviews: 85217

offer snowmobileshocksoi:

• sold: 0
• quantity: 2
• availability: In Stock
• options: Ship-to-home
• started: May 14, 2026

general snowmobileshocksoi:

• Parts Accessories > Snowmobile Parts > Shocks Suspension
• condition: New

payments snowmobileshocksoi:

• other
• credit card: Diners-club
• wallet: Apple-pay

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