SPI SP-2635-543915 Arm Pro Lower Right

( Brand: Spi ), ( Manufacturer Part Number: SP-2635-543915 ), ( Part Type: Arm )

Review SPI Polaris Pro rmk Snowmobile Lower A arm Right fits RMK 800 2011–2012

The **SPI SP-2635-543915 Polaris 800 Pro-RMK (2011-2012) Lower A-Arm (Right Side)** is a high-performance, precision-engineered suspension component designed exclusively for the iconic Polaris 800 Pro-RMK snowmobile models from the 2011 and 2012 production years. Crafted from durable, high-grade steel, this lower A-arm serves as a critical structural link between the snowmobile s frame and front suspension system, ensuring optimal handling, stability, and ride quality under the most demanding conditions. The right-side lower A-arm is meticulously machined to exact specifications, allowing for seamless integration with the original equipment manufacturer (OEM) mounting points while maintaining the factory s intended geometry and articulation. This component is essential for preserving the snowmobile s natural weight distribution, reducing body roll during aggressive turns, and enhancing overall responsiveness, whether navigating tight trails or carving through deep powder. Built to withstand the rigors of off-piste riding, the SPI part is engineered to resist fatigue, bending, and wear, making it a reliable upgrade or replacement for those seeking to restore or enhance their Polaris 800 Pro-RMK s performance. Whether used in stock configurations or as part of a full suspension overhaul, this lower A-arm exemplifies SPI s commitment to quality and compatibility, ensuring that riders can trust in its ability to deliver consistent, high-performance results season after season.

### **Pros and Cons of Buying a Polaris 800 Pro-RMK 2011-2012 Lower A-Arm (SPi SP-2635-543915)**

1. **Compatibility and Fitment** This part is specifically designed for the 2011-2012 Polaris 800 Pro-RMK, ensuring a proper fit without modification. It is a direct replacement for the stock lower A-arm, which may wear out or fail over time.

2. **Improved Durability** SPi (Sport Performance International) is a well-known manufacturer of high-quality aftermarket suspension and steering components. Their lower A-arms are typically made from stronger materials than OEM parts, reducing the risk of bending or cracking under heavy loads or rough terrain.

3. **Enhanced Performance** The SPi lower A-arm may offer slight improvements in handling, stability, and ride quality compared to the stock part, especially if the original was worn or damaged. Some users report better articulation and reduced play in the steering.

4. **Easy Installation** As a direct replacement, this part should install similarly to the OEM component, though some basic mechanical skills and tools (like a torque wrench) are recommended. Installation guides and videos are widely available for this specific model.

5. **Cost-Effective Upgrade** Compared to a full suspension rebuild or replacement, upgrading just the lower A-arm is a relatively inexpensive way to address wear and tear. It can extend the life of the entire suspension system.

6. **Warranty and Support** SPi parts often come with warranties (typically 1 year), and the company provides customer support for installation questions or issues with the part.

7. **Off-Road Suitability** If you use your Polaris 800 Pro-RMK for serious off-roading, a reinforced lower A-arm can better handle the stress of rough trails, reducing the likelihood of sudden failure.

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1. **Price Premium** While not excessively expensive, this part will cost more than an OEM replacement. For example, an OEM lower A-arm might be available for under $100, whereas the SPi version could range between $150 and $250, depending on the source and any additional hardware needed.

2. **Potential Overkill for Light Use** If your Polaris is primarily used for light trail riding or casual off-roading without heavy loads, the stock A-arm may last just as long as the SPi part. Upgrading may not provide noticeable benefits in such cases.

3. **Installation Challenges** While the part is designed for easy replacement, improper installation (e.g., incorrect torque on bolts or misalignment) can lead to premature wear or even damage to the new part. This requires careful attention to detail.

4. **Compatibility with Other Mods** If you ve made other suspension or steering modifications (e.g., upgraded shocks, sway bars, or steering components), the SPi lower A-arm may not integrate perfectly. You may need to adjust other parts of the system to ensure proper alignment.

5. **Limited Long-Term Data** While SPi is a reputable brand, individual experiences with this specific part on the 2011-2012 Polaris 800 Pro-RMK may vary. There isn t as much community feedback or long-term testing data as there is for more popular or newer models.

6. **Hardware Requirements** You may need additional hardware (e.g., new bolts, washers, or bushings) to complete the installation, which adds to the cost and effort. Always check if the part includes all necessary hardware or if you ll need to source it separately.

7. **Resale Value Impact** While not a major concern for most owners, heavily modified parts like this may slightly reduce the resale value of the vehicle compared to a stock or minimally modified unit.

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The **SPi SP-2635-543915 lower A-arm for the 2011-2012 Polaris 800 Pro-RMK** is a solid upgrade for owners looking to replace a worn or damaged stock part. It offers improved durability, better performance, and peace of mind, especially for those who use their Polaris aggressively or on rough terrain. The part is well-made, easy to install, and backed by a reputable manufacturer.

However, if your vehicle is lightly used or you re on a tight budget, the stock A-arm may suffice, and the cost of the SPi part may not be justified. The decision ultimately depends on your riding habits, budget, and how much you prioritize suspension reliability and performance.

- Your current lower A-arm is worn, bent, or cracked.

- You frequently ride on rough or demanding terrain.

- You want to extend the life of your suspension system and improve handling.

- You re already investing in other suspension or performance upgrades.

- Your stock A-arm is still in good condition and you don t plan to push the vehicle hard.

- You re on a tight budget and can t justify the extra cost.

- You lack the mechanical skill or time to install it properly.

- You ve made conflicting modifications that could interfere with the new part s performance.

**Final Verdict:** For most serious riders or those replacing a failed OEM part, the **SPi lower A-arm is a worthwhile investment**. It strikes a balance between cost, quality, and performance, making it a smart choice for upgrading your Polaris 800 Pro-RMK s suspension. Just ensure you follow installation guidelines carefully to maximize its benefits.

Details:

Parts without fitment are to be assumed universal and may require vehicle modification. Color: Black. Polaris 600 RMK 2012 - 2016. Location Side: Right.

I need to exchange an item. Polaris 800 RMK 2011 - 2016. SPI Polaris 800 Pro-RMK 2011 2012 Snowmobile Lower A-Arm Right: A-Arm Contains: One.: Brand: SPI, model Number: SP-2635-543915.

Fits: SPI Lower A-Arm. This is helpful if you are buying multiple items. Material: Chrome Molly.

part #: sp2635543915 price

• $106.32

specifications snowmobileshocksoi:

• for models: Rmk, 800
• for makes: Polaris
• for years: 2011-2012
• brand: Spi
• mpn: Sp-2635-543915
• part type: Arm

seller snowmobileshocksoi:

• # reviews: 86675
• city: San Marcos, CA
• rating: 99.9%

payments snowmobileshocksoi:

• wallet: Google-pay
• other
• credit card: Mastercard

shipping snowmobileshocksoi:

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

returns snowmobileshocksoi:

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

offer snowmobileshocksoi:

• sold: 0
• started: June 6, 2026
• quantity: 9
• options: Ship-to-home
• availability: In Stock

general snowmobileshocksoi:

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

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