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  3. SP1 6571-S376983-91

SP1 6571-S376983-91 Tunnel Protectors Uhmw 136

fits model: 600. make: Polaris. year: 2011–2017.

6571-s376983-91 Sp1 Tunnel Protectors - Uhmw 17 Inch For 2011 Polaris 600 Shift 136 Snowmobile

( Brand: Sp1 ), ( Manufacturer Part Number: 6571-S376983-91 ), ( Part Type: Protector )

Review SP1 Tunnel Protectors Uhmw Inch Polaris Shift 136 Snowmobile fits 600 2011–2017

The **SP1 6571-S376983-91 Tunnel Protectors** are a premium, high-performance set of underbody armor designed specifically for the **2011 Polaris 600 136** snowmobile, engineered to provide unmatched protection against abrasion, impacts, and environmental wear while maintaining optimal performance in rugged winter conditions. Crafted from **ultra-high-molecular-weight polyethylene (UHMW)**, these tunnel protectors are renowned for their exceptional durability, resistance to cold temperatures, and ability to withstand the harshest off-piste terrain without compromising structural integrity. The **UHMW material** offers a unique combination of toughness and flexibility, ensuring that the protectors absorb and dissipate energy effectively during collisions with rocks, ice, or debris, while also resisting cracking or deformation in sub-zero temperatures critical for maintaining protection in extreme Arctic environments. Their **custom-fit design** for the 2011 Polaris 600 136 ensures a snug, secure installation beneath the tunnel, reducing the risk of shifting or misalignment during aggressive riding, whether navigating steep climbs, tight turns, or deep powder. Beyond their protective capabilities, these tunnel protectors are engineered to minimize drag and interference with the snowmobile s undercarriage, allowing for seamless operation without compromising handling or fuel efficiency. The **smooth, low-profile contour** of the UHMW material also prevents snow buildup, reducing the likelihood of operational disruptions caused by clogged vents or obstructed components. Whether tackling icy trails, dense forests, or challenging backcountry routes, these protectors serve as an indispensable layer of defense, extending the lifespan of your snowmobile s critical underbody components while providing riders with the confidence to push the limits of their machine. Built to endure the relentless demands of winter sports, the **SP1 6571-S376983-91** tunnel protectors represent a fusion of cutting-edge material science and precision engineering, delivering both protection and performance in the most demanding conditions.

### **Pros and Cons of Buying SP1 6571-S376983-91 Tunnel Protectors (UHMW 17) for a 2011 Polaris 600**

#### **Pros:**

1. **Enhanced Protection for Tunnel Guards** These tunnel protectors are designed to shield the tunnel guards from impacts, debris, and wear, which is particularly useful for off-road riding where the tunnel area is vulnerable to damage.

2. **Durable Material (UHMW 17)** Ultra-High Molecular Weight Polyethylene (UHMW) is known for its toughness, resistance to abrasion, and ability to absorb impacts without cracking or deforming. This material is ideal for high-stress areas like tunnel guards.

3. **OEM Fitment** The part number (6571-S376983-91) suggests it is an original or high-quality aftermarket replacement designed specifically for the 2011 Polaris 600, ensuring a proper fit without modifications.

4. **Extended Lifespan** By reducing wear and tear on the tunnel guards, these protectors can help prevent costly repairs or replacements over time.

5. **Improved Ride Comfort** In some cases, tunnel protectors can reduce vibrations and noise, contributing to a smoother ride, especially on rough terrain.

6. **Prevents Rust and Corrosion** UHMW is resistant to moisture and chemicals, which helps protect the underlying metal from rust, a common issue in off-road vehicles exposed to dirt and water.

7. **Easy Installation** Most tunnel protectors are designed for straightforward installation, often requiring only basic tools and minimal downtime.

#### **Cons:**

1. **Cost** While the long-term benefits may justify the expense, the upfront cost of high-quality tunnel protectors can be higher than generic or lower-grade alternatives.

2. **Potential for Misalignment** If not installed correctly, the protectors could interfere with the tunnel guards' function, such as affecting suspension travel or causing unnecessary friction.

3. **Limited Availability of Parts** Depending on the region, finding exact replacements or additional protectors for other vulnerable areas may be difficult, especially for older models like the 2011 Polaris 600.

4. **Durability Concerns Over Time** While UHMW is durable, extreme conditions (e.g., constant exposure to sharp rocks or heavy impacts) could eventually wear down even high-quality protectors, requiring replacement.

5. **Aesthetic Considerations** Some riders may prefer a cleaner look without additional protectors, though functionality often outweighs aesthetics in off-road applications.

6. **Compatibility Issues** If the protectors are not perfectly aligned with the tunnel guards, they might not provide optimal protection or could even cause damage if they rub against other components.

7. **Maintenance Requirements** While UHMW is low-maintenance, periodic cleaning and inspection are recommended to ensure the protectors remain effective and free of debris buildup.

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### **Conclusion:**

The **SP1 6571-S376983-91 Tunnel Protectors (UHMW 17)** for your 2011 Polaris 600 are a **strong investment** if you frequently ride in rough or off-road conditions. The **durability, protection against wear, and resistance to environmental damage** far outweigh the minor drawbacks, such as cost and potential installation challenges. For riders who prioritize longevity and performance, these protectors are well worth the expense. However, if you primarily use your Polaris for light or paved riding, the benefits may not justify the cost.

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### **Recommendation:** **Buy these tunnel protectors if:**

- You ride your Polaris 600 in **off-road, rocky, or high-impact conditions**.

- You want to **extend the lifespan of your tunnel guards** and avoid costly repairs.

- You prefer **high-quality, durable materials** that resist wear and corrosion.

- You are willing to **invest in long-term protection** rather than dealing with frequent replacements.

**Avoid or reconsider if:**

- You **rarely ride in rough terrain** and the protectors are unnecessary for your usage.

- You are **uncomfortable with installation** or lack the tools to ensure a proper fit.

- You find **alternative, lower-cost options** that meet your protection needs equally well.

**Final Verdict:** For the 2011 Polaris 600, these tunnel protectors are a **smart upgrade** for off-road enthusiasts. If you value durability and protection, proceed with confidence. If budget or usage patterns are a concern, weigh the pros and cons carefully before purchasing. Always verify compatibility and installation requirements before buying.

Details:

For 2011 Polaris 600 Shift 136 Snowmobile: Recommended whenever adding traction products to tracks, Some model's require 2 pieces per side of tunnel. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: SP1, model Number: 6571-S376983-91. This is helpful if you are buying multiple items.

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. I need to exchange an item. SP1 Tunnel Protectors - UHMW 17in.

part #: 6571s37698391 price

  • $15.54

specifications azsnowmobiling:

  • for models: 600
  • for makes: Polaris
  • for years: 2011-2017
  • brand: Sp1
  • mpn: 6571-s376983-91
  • part type: Protector

payments azsnowmobiling:

  • credit card: Discover
  • wallet: Apple-pay
  • other

shipping azsnowmobiling:

  • service: Standard
  • transit: 2-6 Days
  • class: Standard
  • type: Fixed
  • cost: $0.00

offer azsnowmobiling:

  • quantity: 9
  • started: February 12, 2026
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0

seller azsnowmobiling:

  • city: Indiana, US
  • rating: 99.9%
  • # reviews: 77500

general azsnowmobiling:

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

returns azsnowmobiling:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: 600, for makes: polaris, for years: 2011-2017, part type: protector,
category: snowmobile parts > accessories, sku: 13138534984560602,
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1 offer $15.54 USD
  • New. Offer #1 priced at $15.54 + $0.00 shipping estimate = $15.54* total. 2008 - 2008 Polaris 600 SwitchBack. SP1 Tunnel Protectors - UHMW - 17in.FREE SHIPPING

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