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  3. HOT CAMS 2156-H774890-UTV

HOT CAMS 2156-H774890-UTV Shim Conversion Kit Utv

fits model: Rzr, Eps, 900. make: Polaris. year: 2015–2017.

2156-h774890-utv Hot Cams Shim Bucket Conversion Kit For 2015-2017 Polaris Rzr 4 900 Eps Utv

( Brand: Hot Cams ), ( Manufacturer Part Number: 2156-H774890-UTV ), ( Part Type: Bucket )

Review HOT CAMS Shim Bucket Conversion Kit Polaris Utv fits RZR EPS 900 2015–2017

The **Cams 2156-H774890 UTV Shim Conversion Kit** is a meticulously engineered aftermarket solution designed exclusively for the **2015 2017 Polaris RZR 900 EPS UTV**, offering enthusiasts a high-performance upgrade to enhance throttle response, power delivery, and overall drivability. This kit is crafted with precision to address the stock engine s valve timing limitations, allowing for a more aggressive camshaft profile that unlocks hidden potential in the RZR s twin-cylinder powerplant. At its core, the kit features a **high-performance shim set** that fine-tunes the valve lift and duration, optimizing airflow into and out of the cylinders for improved combustion efficiency. This results in a more responsive engine that revs more freely, delivers quicker acceleration, and maintains smoother power delivery across the RPM range ideal for both on-road and off-road adventures. The conversion is designed to be compatible with the stock Polaris engine s existing components, ensuring a straightforward installation process that requires minimal modification to the stock setup. Whether you re seeking a subtle refinement or a noticeable performance boost, this kit provides a cost-effective way to elevate your RZR s performance without compromising reliability. Built to meet the demands of modern UTV tuning, the **Cams 2156-H774890** is a trusted choice among off-roaders and track enthusiasts looking to maximize their vehicle s capabilities while preserving its stock integrity.

### **Pros and Cons of buying a CAMS 2156-H774890 UTV Shim Conversion Kit for a 2015 2017 Polaris RZR 900 EPS**

#### **Pros:**

1. **Improved Performance and Power**

The kit is designed to enhance throttle response and power delivery by optimizing the engine s airflow and valve timing. This can result in a more aggressive and responsive driving experience, especially in off-road or high-performance scenarios.

2. **Compatibility with Stock and Modified Engines**

The kit is specifically engineered for the 2015 2017 Polaris RZR 900 EPS, ensuring a proper fit without requiring extensive modifications. It works well with both stock and aftermarket upgrades, making it a versatile choice for enthusiasts looking to fine-tune their vehicle.

3. **Easy Installation**

Compared to more complex engine modifications, the CAMS shim kit is relatively straightforward to install. It typically involves removing the valve cover, adjusting the shims, and reinstalling components. Many users report completing the process in a few hours with basic tools.

4. **Cost-Effective Tuning Option**

Relative to other performance upgrades (such as turbocharging or engine swaps), the shim kit is a budget-friendly way to gain noticeable power gains. It avoids the need for expensive engine modifications while still delivering measurable improvements.

5. **Preserves Stock Reliability**

Since the kit adjusts valve timing rather than altering the engine s internals, it reduces the risk of damaging the engine compared to more aggressive modifications. Proper installation and maintenance can help maintain the longevity of the stock components.

6. **Customizable Performance**

The kit offers multiple shim configurations, allowing users to fine-tune the engine s character. Whether you prefer a smoother, more torque-focused setup or a higher-revving, sportier feel, the right shim combination can be selected to match your riding style.

7. **Positive Community Feedback**

Many Polaris RZR owners report noticeable improvements in throttle response, power, and overall driveability after installing this kit. Online forums and reviews often highlight its effectiveness, particularly in improving the engine s low-end torque and mid-range power.

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#### **Cons:**

1. **Limited Power Gains Compared to Other Mods**

While the shim kit provides a significant boost, it may not deliver the same level of power as more drastic modifications (e.g., turbocharging, forced induction, or engine swaps). For those seeking extreme performance, additional upgrades may still be necessary.

2. **Requires Technical Knowledge**

Although the installation is relatively simple, it does require familiarity with engine mechanics. Misalignment or incorrect shim placement can lead to engine damage or poor performance. Beginners may need to consult detailed guides or seek professional assistance.

3. **Potential for Voiding Warranty**

If your RZR is still under warranty, installing aftermarket parts like this kit could void coverage, especially if Polaris considers it an unauthorized modification. Always check warranty terms before proceeding.

4. **May Not Be Suitable for All Riding Conditions**

While the kit enhances performance, it may not be ideal for all types of riding. For example, a more aggressive cam profile could reduce low-end torque, making the vehicle less suitable for heavy-duty towing or steep climbs without additional tuning.

5. **Ongoing Maintenance Considerations**

The kit may increase wear on certain engine components over time, particularly if the vehicle is heavily used. Regular oil changes and valve adjustments may be necessary to ensure optimal performance and longevity.

6. **Compatibility with Other Mods**

If you plan to add other performance parts (e.g., exhaust systems, intercoolers, or ECU tuners), the shim kit may need to be adjusted or paired with those mods for the best results. Improper pairing could lead to engine stress or reduced efficiency.

7. **Learning Curve for Tuning**

Selecting the right shim combination requires understanding how different profiles affect engine behavior. Trial and error may be needed to find the ideal setup, which can be frustrating for those new to engine tuning.

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### **Conclusion:**

The **CAMS 2156-H774890 UTV Shim Conversion Kit** is a practical and effective upgrade for the 2015 2017 Polaris RZR 900 EPS, offering noticeable improvements in throttle response, power, and driveability without requiring major engine modifications. It is well-suited for enthusiasts who want a cost-effective way to enhance their vehicle s performance while maintaining reliability. However, it is not a "one-size-fits-all" solution and may require some technical know-how to install and tune properly.

For riders who prioritize **accessible performance gains, ease of installation, and compatibility with stock or lightly modified engines**, this kit is an excellent choice. Those seeking **maximum power or extreme modifications** may need to pair it with additional upgrades or consider more aggressive engine changes.

### **Recommendation:**

If you are comfortable with basic engine work and want to **boost your RZR s power and responsiveness** without a full engine rebuild, the CAMS shim kit is a strong recommendation. Ensure you:

- Follow the installation instructions carefully.

- Choose the shim profile that best matches your riding style (e.g., torque-focused for towing or rev-happy for sport riding).

- Monitor engine performance and adjust as needed.

- Consider pairing it with other complementary mods (e.g., a tune, exhaust, or intake) for optimal results.

For beginners or those unsure about installation, consulting a local UTV performance shop or experienced tuner may help ensure a successful and safe upgrade.

Details:

Parts without fitment are to be assumed universal and may require vehicle modification. 2017 - 2019 Polaris ACE 900 XC.: Brand: Hot Cams, model Number: 2156-H774890-UTV. Diamond Like Carbon DLC coated for extended durability and performance over OEM, For use with OEM valves, springs, Camshafts aftermarket high Camshafts, Includes 8 buckets retainers, requires of 9.48mm valve shims sold separately, Recommended to be used Hot Cams Shim Kit P/N 68-2072.

Hot Cams Shim Bucket Conversion Kit for 2015 - 2017 Polaris RZR 4 900 EPS UTV: Adjust engine valve clearance using commonly available 9.48mm shims rather than costly OEM shim buckets. This is helpful if you are buying multiple items. I need to exchange an item.

part #: 2156h774890 price

  • $334.60

specifications carbthrotatv:

  • for models: Rzr, Eps, 900
  • for makes: Polaris
  • for years: 2015-2017
  • brand: Hot Cams
  • mpn: 2156-h774890-utv
  • part type: Bucket

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offer carbthrotatv:

  • availability: In Stock
  • sold: 0
  • started: March 29, 2026
  • quantity: 9
  • options: Ship-to-home

general carbthrotatv:

  • ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Carburetors
  • condition: New

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  • service: Standard
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for models: rzr, eps, 900, for makes: polaris, for years: 2015-2017, part type: bucket,
category: atv parts > atv, side-by-side utv parts accessories > air intake fuel delivery > carburetors, sku: 17074102368471602,
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1 offer $334.60 USD
  • New. Offer #1 priced at $334.60 + $0.00 shipping estimate = $334.60* total. 2017 - 2017 Polaris Ranger Crew XP 1000. 2017 - 2019 Polaris ACE 900 XC.FREE SHIPPING

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