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  3. SP1 5757-S393355-87

SP1 5757-S393355-87 Suspension Spring Rear Left 488

fits model: Trail. make: Polaris. year: 1985.

5757-s393355-87 Sp1 Suspension Spring For 1985 Polaris Trail 488 Snowmobile Rear Left

( Brand: Sp1 ), ( Manufacturer Part Number: 5757-S393355-87 ), ( Part Type: Spring Suspension )

Review SP1 Suspension Spring Polaris 488 Snowmobile Rear Left fits TRAIL 1985

The **SP1 5757-S393355-87 suspension spring** is a high-performance, precision-engineered replacement part designed specifically for the **1985 Polaris Trail 488**, ensuring optimal ride quality, handling, and durability for off-road enthusiasts. This spring is part of the rear left suspension system, a critical component that absorbs shocks from rough terrain, maintains tire contact with the ground, and enhances overall vehicle stability during aggressive riding conditions. Crafted from high-grade, heat-treated alloy steel, this spring is built to withstand extreme forces, preventing fatigue and ensuring long-lasting performance even under the most demanding off-road scenarios. Its unique coil design and calibrated spring rate provide a balanced blend of comfort and responsiveness, allowing riders to tackle everything from rocky trails to deep sand with confidence. The spring s precise measurements and engineering align perfectly with the original equipment specifications, guaranteeing a seamless fit without compromising the integrity of the suspension system. Whether you're navigating steep climbs, sharp descents, or uneven surfaces, this spring delivers consistent support, reducing bounce and improving control for a smoother, more controlled ride. Ideal for riders who demand reliability and performance, this replacement spring is an essential upgrade for maintaining the Trail 488 s legendary off-road capabilities.

### Pros and Cons of buying a SP1 5757-S393355-87 Suspension Spring for a 1985 Polaris Trail 488 (Rear Left)

#### **Pros:**

1. **OEM Replacement Part** This spring is an original equipment manufacturer (OEM) part, meaning it is designed to match the specifications of the factory suspension system on your 1985 Polaris Trail 488. This ensures proper fitment, performance, and compatibility with the rest of the suspension components.

2. **Reliability and Durability** Polaris parts, including OEM suspension springs, are built to withstand the demands of off-road use. The spring should provide consistent performance over time, reducing the risk of sudden failure.

3. **Improved Ride Quality** If your current suspension is worn or sagging, replacing the spring with an OEM part can restore the intended ride height and damping characteristics, leading to a smoother and more controlled ride.

4. **Safety** A properly functioning suspension is critical for handling, stability, and control, especially on rough terrain. Replacing a worn spring helps maintain these safety-critical functions.

5. **Compatibility with Other Components** Since it is an OEM part, it is designed to work seamlessly with the shock absorber, axle, and other suspension components on your specific model, reducing the risk of interference or improper function.

6. **Warranty Coverage** If purchased from an authorized dealer or a reputable supplier, the part may come with a warranty, providing peace of mind against defects.

7. **Preservation of Original Performance** Using an OEM spring ensures that the vehicle retains its original handling characteristics, which may be important for enthusiasts who prefer to keep the bike as close to stock as possible.

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#### **Cons:**

1. **Cost** OEM parts can be more expensive than aftermarket alternatives. Depending on the supplier, this spring may be priced higher than non-genuine options, which could be a significant investment if multiple parts are needed.

2. **Limited Customization** If you are looking to modify the suspension for a different ride height, stiffness, or performance characteristics, an OEM spring may not offer the flexibility of aftermarket options designed for tuning.

3. **Potential for Wear in Other Components** If the rest of the suspension system (e.g., shocks, bushings, or linkages) is worn, replacing just the spring may not fully resolve ride issues. You might need to address other components simultaneously, adding to the cost.

4. **Availability and Lead Times** OEM parts, especially for older models like the 1985 Trail 488, may not always be in stock at local dealers. You might need to order online, which could result in longer wait times for delivery.

5. **Mixed Quality Perceptions** While Polaris parts are generally reliable, some buyers report variability in quality depending on the source (e.g., new vs. refurbished, direct from Polaris vs. third-party sellers). Always verify the authenticity and condition of the part before purchasing.

6. **Installation Complexity** Suspension springs are under high tension and require careful handling during installation. Improper installation (e.g., not using the correct tools or techniques) can lead to damage to the spring, suspension components, or even injury. This may necessitate professional installation, adding to the cost.

7. **Environmental Factors** If the spring has been exposed to extreme conditions (e.g., salt, moisture, or prolonged storage), it may already be degraded. Inspecting the part for rust, cracks, or corrosion before installation is essential.

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### **Conclusion:**

The SP1 5757-S393355-87 suspension spring is an excellent choice for restoring or maintaining the original performance of your 1985 Polaris Trail 488 s rear suspension. Its OEM status guarantees compatibility, reliability, and safety, making it a sound investment if your goal is to preserve the bike s factory specifications or address sagging suspension. However, if you are open to modifying the suspension for performance tuning or if budget is a concern, exploring aftermarket alternatives (while ensuring they are compatible) could be worth considering.

For most riders prioritizing authenticity and long-term reliability, the OEM spring is the recommended option. Just be prepared for the higher cost and ensure that the rest of the suspension system is in good condition to maximize the benefits of the replacement.

### **Recommendation:**

- **Purchase from an authorized Polaris dealer or a trusted online retailer** (e.g., Polaris Parts Center, ATV Parts Pro, or eBay from verified sellers) to ensure authenticity and warranty coverage.

- **Inspect the spring thoroughly** for damage, rust, or wear before installation. If it appears compromised, request a replacement or return.

- **Consider professional installation** if you are not experienced with suspension work, as improper handling can be dangerous.

- **Check the condition of related components** (e.g., shocks, bushings, and linkages) and replace them if necessary to ensure the suspension functions optimally.

- **Keep records** of the purchase and installation for future reference, especially if warranty claims are needed.

Details:

Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items. I need to exchange an item. Compatibility: Years: Make: model: Application: Notes: 1987 - 1987 w/ Reverse Rear Left, 1985 1989 Polaris400Rear 1987 Polaris600Rear 1980 1985 Polaris Trail 488Rear 1989 Polaris500Rear 1992 Polaris Lite GT Rear 1987 1988 1990 Polaris Star Tracker 1990 1991 Polaris Sport 1989 Polaris Trail ES Rear 1996 Scorer 1989 Polaris650Rear 1982 Polaris TX-L 340Rear 1986 Polarises 1990 Polaris Trail Wide 1990 Deluxe Rear 1992 1986 Spear Super 1980 Polaris TX-Rear Left.

SP1 Suspension Spring for 1985 Polaris Trail 488 Snowmobile Rear Left: Application: Left.: Brand: SP1, model Number: 5757-S393355-87.

part #: 5757s39335587 price

  • $42.23

specifications snowmobileshocksoi:

  • for models: Trail
  • for makes: Polaris
  • for years: 1985
  • brand: Sp1
  • mpn: 5757-s393355-87
  • part type: Spring Suspension

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

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  • availability: In Stock
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  • quantity: 9
  • started: May 7, 2026
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  • type: Fixed
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for models: trail, for makes: polaris, for years: 1985, part type: spring suspension,
category: snowmobile parts > shocks suspension, sku: 22336917065433722,
Sp1 5757-S393355-87 Is Similar To:
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1 offer $42.23 USD
  • New. Offer #1 priced at $42.23 + $0.00 shipping estimate = $42.23* total. 1985 - 1990 Polaris Trail Rear Left. 1985 - 1985 Polaris Trail 488 Rear Left.FREE SHIPPING

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