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SP1 6525-S376891-45 Tunnel PROTECTORS-UHMW-17 136

fits model: 550. make: Polaris. year: 2011–2013.

6525-s376891-45 Sp1 Tunnel Protectors-uhmw-17 Inch For 2011-2013 Polaris 550 Shift 136 Snowmobile

( Brand: Sp1 ), ( Manufacturer Part Number: 6525-S376891-45 )

Review SP1 Tunnel Protectors-uhmw-17 Inch Polaris Shift Snowmobile fits 550 2011–2013

The **SP1 6525-S376891-45 Tunnel Protectors (UHMW-PE, 17")** are a premium, high-performance set of tunnel guards designed exclusively for the **2011 2013 Polaris 550 136** snowmobile models. Crafted from **ultra-high-molecular-weight polyethylene (UHMW-PE)**, these protectors are engineered to provide unmatched durability, resistance to abrasion, and long-lasting protection against the harshest winter conditions. The **17-inch length** ensures comprehensive coverage of the tunnel area, shielding the frame and critical components from snow, ice, rocks, and debris that can cause costly damage over time. Unlike standard plastic or rubber alternatives, UHMW-PE offers superior impact absorption, reducing the risk of scratches, dents, and structural compromise while maintaining flexibility to accommodate the snowmobile s movement. These tunnel guards are **easily installed** with a secure, interference-fit design that requires no additional hardware, ensuring a clean, professional finish without compromising the vehicle s aerodynamics. Whether navigating deep powder, icy trails, or rocky terrain, these protectors act as a silent defender, preserving the integrity of your Polaris 550 while extending its lifespan and maintaining its resale value. Built to withstand extreme temperatures and continuous exposure to moisture, they are a must-have accessory for riders who demand both performance and protection in every ride.

**Pros and Cons of Buying SP1 6525-S376891-45 Tunnel Protectors (UHMW) for 2011 2013 Polaris 550 136**

### **Pros**

1. **Enhanced Protection for the Sprocket and Chain** These tunnel protectors are designed to shield the rear sprocket and drive chain from debris, rocks, and wear caused by off-road use. This helps extend the lifespan of these critical components, reducing costly repairs or replacements over time.

2. **Durability** Made from ultra-high-molecular-weight polyethylene (UHMW), these protectors are resistant to abrasion, impact, and chemical damage. UHMW is known for its toughness and ability to withstand harsh conditions, making it ideal for ATV use.

3. **Easy Installation** The design appears to be straightforward to install, requiring minimal tools. Many users report that these protectors can be fitted without disassembling the entire drivetrain, saving time and effort.

4. **Compatibility** These protectors are specifically engineered for the 2011 2013 Polaris 550 136, ensuring a precise fit and optimal performance. Mismatched parts can lead to misalignment or damage, so compatibility is a key advantage.

5. **Cost-Effective Long-Term Solution** While the upfront cost may seem high, preventing damage to the sprocket and chain can save money in the long run by avoiding premature wear or failure of these expensive components.

6. **Improved Ride Comfort and Performance** By reducing chain stretch and wear, these protectors can help maintain consistent power delivery and reduce vibration, leading to a smoother ride.

7. **Prevents Mud and Dirt Buildup** The protectors create a barrier that keeps mud, dirt, and debris from accumulating on the sprocket and chain, reducing the risk of clogging or excessive friction.

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### **Cons**

1. **Upfront Cost** The initial purchase price for these protectors may be higher than generic or aftermarket alternatives. However, this is often justified by their quality and longevity.

2. **Potential for Misalignment** If not installed correctly, these protectors could interfere with the chain s movement or cause misalignment, leading to premature wear on the sprocket or chain. Proper installation is critical.

3. **Limited Availability of Replacement Parts** If the protectors fail or wear out, finding exact replacements may be challenging, especially if the model is no longer widely sold. Always check for availability before purchasing.

4. **Maintenance Requirements** While UHMW is durable, these protectors may still require occasional cleaning to remove mud, oil, or debris that could accumulate over time. Neglecting maintenance could reduce their effectiveness.

5. **Weight Addition** Adding these protectors increases the overall weight of the ATV slightly, which may have a minor impact on fuel efficiency or handling, though this is typically negligible for most riders.

6. **Potential for Scratches or Damage** While UHMW is tough, the protectors can still scratch or dent if they come into contact with sharp objects or are dropped. This is more of an aesthetic concern unless the damage compromises their function.

7. **Compatibility with Aftermarket Mods** If the ATV has aftermarket modifications (e.g., upgraded chains, sprockets, or suspension), these protectors may not fit perfectly or could require adjustments. Always verify compatibility with any modifications.

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### **Conclusion**

The **SP1 6525-S376891-45 Tunnel Protectors** are a **high-quality, durable, and necessary upgrade** for the 2011 2013 Polaris 550 136, particularly for riders who frequently use their ATV off-road or in rough terrain. The protectors offer **significant long-term benefits** by extending the life of the sprocket and chain, reducing maintenance costs, and improving performance. While the **upfront cost and potential installation challenges** are drawbacks, these are outweighed by the **protection and longevity** they provide.

For riders who prioritize **durability, ease of use, and compatibility**, these protectors are a **strong recommendation**. However, those on a tight budget or with minimal off-road use might consider whether the investment is justified. Always ensure proper installation and maintenance to maximize their effectiveness.

### **Recommendation**

**Purchase these protectors if:**

- You frequently ride in rough or rocky terrain.

- You want to extend the life of your sprocket and chain.

- You value high-quality, long-lasting components for your ATV.

- You are willing to invest in preventative maintenance to avoid costly repairs.

**Avoid or reconsider if:**

- You primarily ride on paved roads or smooth trails with minimal off-road use.

- You are unwilling to pay the upfront cost or cannot find a reliable source for replacements.

- You lack the time or tools to install them correctly.

For most serious off-road riders, the **benefits far outweigh the drawbacks**, making these protectors a **worthwhile addition** to the 2011 2013 Polaris 550 136.

Details:

This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification. SP1 Tunnel Protectors-UHMW-17in. Compatibility: Years: Make: model: Application: Notes: 2008 - 2008 Polaris600 Switchback, 2011 Polaris600 Shift 136, 2014 Polaris550 INDY Voyager, 2009 2013 Polaris550 IQ Shift, 2010 Polaris IQ Turbo Dragon, 2008 Polaris700 IQ, 2009 Polaris600 INDY, Dragon 2008 Polaris IQ LX, SP, 2010 Polaris800 2009 Polaris800 2012 Polaris600.

Brand: SP1, model Number: 6525-S376891-45. I need to exchange an item. For 2011 - 2013 Polaris 550 Shift 136 Snowmobile: Recommended whenever adding traction products to tracks, Some model's require 2 pieces per side of tunnel.

part #: 6525s37689145 price

  • $15.54

specifications azsnowmobiling:

  • for models: 550
  • for makes: Polaris
  • for years: 2011-2013
  • brand: Sp1
  • mpn: 6525-s376891-45

general azsnowmobiling:

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

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  • availability: In Stock
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  • quantity: 9
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  • started: June 11, 2026

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  • city: Indiana, US
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for models: 550, for makes: polaris, for years: 2011-2013,
category: snowmobile parts > accessories, sku: 13774878768714891,
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  • New. Offer #1 priced at $15.54 + $0.00 shipping estimate = $15.54* total. 2014 - 2014 Polaris 550 INDY Voyager. SP1 Tunnel Protectors-UHMW-17in.FREE SHIPPING

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