SP1 MN-CD28 Ski Gas Shock Suspension MN/CD28 155

( Manufacturer Part Number: MN/CD28 ), ( Compatible Year: 2016 2015 2014 2013 2012 ), ( Compatible Model: 600 Rmk 155 ), ( Bundle Description: 1 Pc Genuine Sp1 Ski Gas Shock ), ( Type: Ski Gas Shock ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review SP1 Mn/cd28 Ski Gas Shock Polaris Suspension Shocks Ny fits RMK 600 2012–2016

The **SP1 MN/CD28 Ski Gas Shock** is a high-performance, aftermarket suspension upgrade specifically engineered to transform the handling, comfort, and off-road capability of the **2012 2016 Polaris 600 RMK 155** snowmobile. Designed with precision and built to exceed OEM standards, this shock delivers a seamless blend of durability, adjustability, and responsiveness, making it an ideal choice for riders seeking enhanced traction, reduced fatigue, and improved control in both deep powder and rough terrain. The **SP1 MN/CD28** features a **monotube gas-charged design**, which ensures consistent damping performance across varying temperatures and altitudes, eliminating the sluggishness often associated with traditional oil-filled shocks. Its **adjustable rebound and compression damping** allows riders to fine-tune the suspension to their riding style, whether they prefer a firmer setup for aggressive trail riding or a softer feel for cruising through fresh snow. The shock s **high-quality stainless steel construction** and **sealed, nitrogen-charged chamber** prevent air leaks and corrosion, ensuring long-term reliability even in harsh winter conditions. Additionally, the **CD28 designation** indicates a **custom-duty shock**, meaning it s engineered with a **stiffer spring rate** and **enhanced load-bearing capacity** to handle the demands of heavier riders or extended use without sacrificing performance. Whether tackling steep climbs, navigating icy trails, or simply seeking a smoother, more engaging ride, the **SP1 MN/CD28** delivers a noticeable upgrade in both comfort and control, making it a standout choice for Polaris 600 RMK 155 owners looking to push the limits of their machine.

Buying the **SP1 MN/CD28 SKI Gas Shock** for a **2012 2016 Polaris 600 RMK 155** suspension setup has both advantages and drawbacks, depending on your riding style, terrain, and budget. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of the SP1 MN/CD28 SKI Gas Shock**

1. **Improved Ride Comfort and Stability**

The SP1 shocks are designed for off-road use, offering better damping control than stock shocks. They reduce harshness on rough terrain, providing a smoother ride by absorbing impacts more effectively. This is particularly useful for riders who frequently tackle rocky, root-filled, or uneven trails.

2. **Enhanced Performance on Technical Terrain**

The **MN (Medium-Normal)** spring rate paired with the **CD28 (Coil Down 28mm)** design allows for better articulation and control in tight turns, jumps, and steep descents. The gas-charged system prevents bottoming out, which is critical for maintaining traction and preventing damage to the suspension.

3. **Adjustable Preload (Optional)**

While the SP1 shocks themselves are not fully adjustable, they are compatible with **SP1 preload adjusters**, which allow riders to fine-tune the suspension stiffness. This can be beneficial for riders who frequently switch between different trail conditions or body weights.

4. **Durability and Longevity**

SP1 shocks are built with high-quality materials, including hardened springs and corrosion-resistant components. They are designed to withstand the stresses of frequent off-road use, reducing the likelihood of premature failure compared to aftermarket shocks of lower quality.

5. **Better Heat Dissipation**

The gas-charged design helps dissipate heat more efficiently than oil-only shocks, reducing the risk of damping failure on long rides or in hot conditions. This is especially useful for riders who push their bikes hard or ride in high-temperature environments.

6. **Compatibility with Other SP1 Components**

If you plan to upgrade other parts of your suspension (e.g., **SP1 sway bar, bushings, or linkages**), these shocks integrate seamlessly with the SP1 ecosystem, ensuring consistent performance across the entire suspension system.

7. **Positive User Feedback**

Many riders report noticeable improvements in handling, cornering, and overall ride quality after installing SP1 shocks. The shocks are widely regarded as a reliable upgrade for Polaris 600 RMK models, especially for those who prioritize off-road performance over pure on-road comfort.

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### **Cons of the SP1 MN/CD28 SKI Gas Shock**

1. **Higher Upfront Cost**

The SP1 shocks are more expensive than stock shocks or basic aftermarket alternatives. For a **2012 2016 Polaris 600 RMK 155**, the cost can range from **$300 $500 per shock**, depending on whether you purchase them new or used. This is a significant investment compared to OEM shocks or cheaper aftermarket options.

2. **Limited Adjustability Without Add-Ons**

Unlike some high-end suspension systems (e.g., **Fox or RockShox with remote reservoirs**), the SP1 shocks do not offer **clicker adjustments** for rebound or compression damping. While the **preload adjuster** helps, it does not provide the same level of fine-tuning as fully adjustable shocks.

3. **Potential for Overkill on Mild Trails**

If you primarily ride on **paved roads, groomed trails, or light off-road conditions**, the firmer spring rate of the SP1 shocks may feel unnecessarily stiff. The **MN spring rate** is optimized for aggressive off-road use, which could make the ride feel harsh on smoother terrain.

4. **Installation Complexity**

Upgrading to SP1 shocks requires **removing the stock shocks, adjusting linkages, and ensuring proper alignment**. While not overly difficult, it does require some mechanical skill or access to a shop familiar with Polaris suspension. Improper installation can lead to handling issues or premature wear.

5. **Weight Consideration**

SP1 shocks are heavier than stock shocks due to their robust construction. While the difference is minimal, it may slightly affect the bike s overall weight distribution, particularly for riders who prioritize lightweight handling.

6. **Maintenance Requirements**

Gas-charged shocks require periodic **bleeding** to maintain proper damping performance, especially after hard rides or if the seals degrade over time. Unlike oil-only shocks, they are more sensitive to seal leaks, which can lead to loss of pressure and reduced performance.

7. **Limited Availability of Parts**

While SP1 is a reputable brand, finding **replacement seals, springs, or entire shocks** may be more difficult than for OEM or more mainstream aftermarket brands. This could lead to longer wait times for repairs or replacements.

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### **Conclusion**

- Frequently ride **aggressive off-road trails** (rocky, technical, or jump-heavy).

- Want **superior damping and articulation** over stock or budget aftermarket shocks.

- Are willing to invest in a **high-quality, durable suspension upgrade**.

- Plan to **combine it with other SP1 suspension components** for a cohesive setup.

- Primarily ride on **paved roads or smooth trails** and prefer a softer, more comfortable ride.

- Want **full adjustability** (clicker shocks) for fine-tuning damping.

- Are on a **tight budget** and cannot justify the higher cost.

- Lack the **mechanical skill or access to a shop** for proper installation.

---

### **Recommendation**

For a **2012 2016 Polaris 600 RMK 155**, the **SP1 MN/CD28 SKI Gas Shock** is one of the best aftermarket suspension upgrades available, particularly if you ride hard and want a noticeable improvement in handling and comfort. If you are unsure whether the firmer spring rate suits your riding style, consider:

- **Testing a used pair** (if available) to gauge comfort before committing.

- **Pairing them with SP1 preload adjusters** to fine-tune stiffness.

- **Combining them with other SP1 components** (e.g., sway bar, bushings) for a full suspension upgrade.

If your budget is a concern, alternatives like **Fox 2.0 shocks** (if compatible) or **budget-friendly brands like Progressive or Ohlsson** may offer a balance between cost and performance. However, for riders who demand the best in off-road suspension, the SP1 shocks are a **strong, reliable recommendation**.

Details:

SP1 Ski Gas Shock for 2012 - 2016 Polaris 600 RMK 155 - Suspension Shocks, ny: Status: In Stock.

part #: mncd28 price

• $197.60

specifications snowmobileshocksoi:

• for models: Rmk, 600
• for makes: Polaris
• for years: 2012-2016
• mpn: Mn/cd28
• compatible year: 2016 2015 2014 2013 2012
• compatible model: 600 Rmk 155
• bundle description: 1 Pc Genuine Sp1 Ski Gas Shock
• type: Ski Gas Shock
• core charge: Free No Core Charge
• fitment type: Direct Replacement

offer snowmobileshocksoi:

• quantity: 1
• options: Ship-to-home
• sold: 0
• started: February 23, 2026
• availability: In Stock

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

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