SPORTS PARTS INC 6869-S557579-29 Spi Gas Suspension Shock Rear

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 6869-S557579-29 ), ( Part Type: Suspension Shock )

Review SPORTS PARTS INC Spi Gas Suspension Shock Polaris Tx Snowmobile Rear fits 250 1974–1978

The **6869-S557579-29 SPI Gas Suspension Shock** is a high-performance, precision-engineered rear suspension component designed exclusively for **1974 1978 Polaris 250** off-road motorcycles, offering an unmatched blend of durability, adjustability, and off-road capability. Built with **SPI (Specialty Products International) engineering**, this gas-charged shock absorber replaces the stock unit, delivering superior damping performance, improved ride comfort, and enhanced handling across rough terrain. The shock features a **high-quality, sealed gas-charge system** that eliminates air bubbles and maintains consistent pressure, ensuring optimal performance in extreme conditions whether tackling rocky trails, steep climbs, or aggressive descents. Its **adjustable rebound and compression damping** allows riders to fine-tune the suspension to their weight, riding style, and terrain preferences, providing a more responsive and controlled ride. The **durable, corrosion-resistant construction** often featuring a **chrome-plated or anodized finish** ensures longevity even in harsh environments, while the **robust mounting hardware** guarantees a secure fit without compromising alignment. Whether you're a competitive off-roader pushing the limits of your 250 or a weekend trail rider seeking a smoother, more engaging experience, this shock delivers the **precision, reliability, and adaptability** needed to dominate the terrain. Upgrade your Polaris 250 s rear suspension with this **factory-replacement-grade shock** and experience a noticeable improvement in stability, traction, and overall ride quality, making every adventure more enjoyable and controlled.

### **Pros and Cons of buying a Sports 6869-S557579-29 SPI Gas Suspension Shock for a 1974 1978 Polaris 250 Rear**

1. **Improved Ride Comfort and Handling** Gas shocks absorb bumps and vibrations better than standard shocks, reducing fatigue during long rides and improving stability on rough terrain.

2. **Better Weight Distribution** The adjustable nature of gas shocks allows for fine-tuning of suspension preload, which can enhance traction and cornering performance.

3. **Durability and Longevity** SPI shocks are known for their robust construction, often lasting longer than OEM shocks, especially in demanding conditions.

4. **Compatibility with Aftermarket Mods** Many Polaris 250 owners upgrade suspension for performance tuning, and this shock is a popular choice for those looking to enhance their bike s capabilities.

5. **Reduced Maintenance Over Time** While gas shocks require occasional servicing, they generally need fewer adjustments than coil-over or spring-based setups.

6. **Positive User Feedback** Many riders report noticeable improvements in both on-road and off-road performance after installing SPI shocks.

1. **Cost** Gas shocks are more expensive than standard shocks, and installation may require professional labor if you lack mechanical experience.

2. **Installation Complexity** Replacing rear shocks on a Polaris 250 requires disassembling parts of the frame and adjusting the swingarm, which can be time-consuming.

3. **Maintenance Requirements** Gas shocks need periodic servicing (seal checks, gas refills, and compression adjustments) to maintain optimal performance.

4. **Potential for Overkill** If the bike is primarily used for light trail riding or commuting, the performance gains may not justify the cost.

5. **Learning Curve** Adjusting gas shocks properly takes practice; improper settings can lead to a harsh ride or reduced handling stability.

6. **Availability and Fitment** While widely used, ensuring the exact model fits your specific 1974 1978 Polaris 250 variant (especially if it s a rare or modified model) may require verification.

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### **Conclusion and Recommendation**

The **Sports 6869-S557579-29 SPI gas shock** is a solid upgrade for a 1974 1978 Polaris 250, particularly if you prioritize comfort, handling, and long-term durability over cost. It s ideal for riders who frequently tackle rough terrain, perform aggressive riding, or plan to modify their bike further. However, if your usage is minimal or you re on a tight budget, the benefits may not outweigh the investment.

- **Proceed with purchase** if you plan to ride the bike hard, want a smoother ride, and are prepared for installation/maintenance.

- **Consider alternatives** (e.g., OEM shocks with upgrades like stiffer springs) if you re unsure about the long-term value or lack experience with suspension tuning.

- **Verify fitment** with the manufacturer or a trusted mechanic to ensure compatibility with your exact bike model.

- **Budget for installation** if DIY isn t an option, factor in labor costs.

For most serious riders, the SPI shock is a worthwhile investment that enhances both performance and enjoyment. Just ensure you re committed to the maintenance it requires.

Details:

1972 - 1974 Polaris Colt S/S 295 Rear. 1974 - 1978 Polaris TX 250 Rear. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: Sports Parts Inc, model Number: 6869-S557579-29.

This is helpful if you are buying multiple items. SPI Gas Suspension Shock for 1974-1978 Polaris TX 250 Snowmobile Rear: Application: Rear. I need to exchange an item.

part #: 6869s55757929 price

• $115.03

specifications snowmobileshocksoi:

• for models: 250
• for makes: Polaris
• for years: 1974-1978
• brand: Sports Parts Inc
• mpn: 6869-s557579-29
• part type: Suspension Shock

shipping snowmobileshocksoi:

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

general snowmobileshocksoi:

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

seller snowmobileshocksoi:

• # reviews: 85217
• rating: 99.9%
• city: Boise, ID

payments snowmobileshocksoi:

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

returns snowmobileshocksoi:

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

offer snowmobileshocksoi:

• availability: In Stock
• quantity: 9
• sold: 0
• started: May 13, 2026
• options: Ship-to-home

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