BENELLI MU9017 Wards Riverside Right Crank Bearing 125CC

( Brand: Benelli ), ( Manufacturer Part Number: MU9017 ), ( Part Type: Bearing Crank )

Review BENELLI Wards Riverside 125cc Right Side Crank Bearing

The **Benelli MU9017 Wards Riverside 125cc Right Crank Bearing** is a precision-engineered component designed to ensure optimal performance, durability, and reliability for the iconic Benelli Riverside 125cc scooter, particularly those equipped with the MU9017 engine variant. This high-quality right crankshaft bearing is meticulously crafted to withstand the demanding stresses of daily commuting, urban maneuvering, and occasional spirited riding, making it an essential upgrade for enthusiasts seeking enhanced longevity and smoother operation. Engineered from premium-grade materials, including hardened steel or high-performance alloy, this bearing is treated with advanced surface coatings to minimize friction, reduce wear, and dissipate heat efficiently, thereby protecting the crankshaft from premature degradation. Its robust construction ensures a tight fit within the engine s housing, maintaining proper alignment and reducing axial and radial play, which is critical for maintaining consistent power delivery and preventing catastrophic failure. Whether you re restoring a classic Benelli Riverside or upgrading an existing unit for improved performance, this bearing serves as a vital component in preserving the engine s integrity, extending its service life, and ensuring a seamless riding experience. Ideal for mechanics, DIY enthusiasts, and performance-focused riders, this part is a testament to Benelli s commitment to craftsmanship and reliability, offering a direct solution for those looking to maintain or enhance the mechanical efficiency of their scooter.

### Pros and Cons of buying a Benelli MU9017 (Wards Riverside 125cc) Right Crank Bearing

1. **Performance Improvement** The right crank bearing is a critical component in the engine s operation. A worn or failing bearing can lead to reduced power, poor acceleration, and overall degraded performance. Replacing it with a high-quality aftermarket bearing (such as the Wards Riverside unit) can restore smooth operation, improve throttle response, and enhance engine efficiency.

2. **Preventative Maintenance** If the bearing is failing or showing signs of wear (such as noise, vibration, or oil leakage), replacing it proactively can prevent catastrophic engine failure. This is especially important in high-performance or frequently used motorcycles, where stress on the crankshaft is greater.

3. **Compatibility and Fit** Wards Riverside is a reputable brand known for producing high-quality, OEM-replacement parts. Their bearings are designed to match the original specifications of the Benelli MU9017, ensuring a proper fit and reliable performance without modification.

4. **Durability and Longevity** High-quality bearings like those from Wards Riverside are typically made from durable materials (such as hardened steel or ceramic-coated surfaces) that resist wear, heat, and stress better than lower-quality alternatives. This can extend the lifespan of the crankshaft assembly and reduce the need for frequent replacements.

5. **Ease of Installation** Replacing a crank bearing is a relatively straightforward process for a mechanic with basic tools and experience. The Wards Riverside bearing is designed to be a drop-in replacement, meaning it should install without requiring modifications to the engine or crankshaft.

6. **Cost-Effective Solution** While the upfront cost of a high-quality bearing may be slightly higher than an OEM or no-name part, it can save money in the long run by avoiding costly engine damage or premature failure of other components (such as the crankshaft or connecting rods).

7. **Warranty and Support** Reputable brands like Wards Riverside often provide warranties on their bearings, offering peace of mind in case of defects or premature failure. Additionally, they may offer technical support or guidance for installation.

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1. **Upfront Cost** High-quality aftermarket bearings like the Wards Riverside unit may be more expensive than generic or OEM parts. While this is an investment in reliability, it can be a deterrent for budget-conscious buyers or those who prefer to save on individual components.

2. **Installation Complexity** While the process is manageable for experienced mechanics, replacing a crank bearing requires disassembling the engine, which can be time-consuming and labor-intensive. If the rider lacks mechanical experience, they may need to pay for professional installation, adding to the total cost.

3. **Potential for Overkill** If the bearing is not actually failing but is simply worn due to normal usage, replacing it prematurely may not be necessary. In such cases, the cost of the bearing could be seen as unnecessary expenditure. A diagnostic check (such as listening for unusual noises or checking for oil leaks) can help determine whether replacement is truly needed.

4. **Risk of Installation Errors** If the bearing is not installed correctly (e.g., improper lubrication, misalignment, or incorrect torque), it can lead to premature failure or damage to the crankshaft. This underscores the importance of following manufacturer guidelines or seeking professional help during installation.

5. **Limited Availability or Lead Times** Depending on the region or dealer, high-quality bearings may not always be readily available. Some specialized parts, especially for niche motorcycles like the Benelli MU9017, may require ordering in advance, which could delay repairs.

6. **Alternative Solutions** In some cases, other components (such as the oil pump or crankshaft seals) may be contributing to bearing wear. Addressing these underlying issues simultaneously could be more cost-effective than just replacing the bearing alone. A thorough engine inspection is advisable before proceeding with the replacement.

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Replacing the right crank bearing on a Benelli MU9017 with a high-quality aftermarket unit like the Wards Riverside 125cc bearing is a prudent decision if the bearing is failing or showing signs of distress. The benefits including improved performance, preventative maintenance, and long-term reliability outweigh the drawbacks for most riders. However, the decision should be based on a clear assessment of the bearing s condition, the rider s mechanical ability, and the overall health of the engine.

For riders who are unsure about the bearing s condition or lack experience with engine disassembly, consulting a professional mechanic is recommended. If the bearing is indeed failing, the Wards Riverside part is a strong choice due to its quality, compatibility, and durability. If the bearing is still in good condition, the cost of replacement may not be justified, and other maintenance tasks should take priority.

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- **If the bearing is failing or showing symptoms (noise, vibration, oil leaks, or reduced performance):** Proceed with the replacement using the Wards Riverside bearing. Ensure proper installation and consider addressing any related issues (e.g., oil leaks, crankshaft seals) to maximize the lifespan of the new bearing.

- **If the bearing is still functional but heavily worn:** Delay replacement unless symptoms worsen. Focus on other maintenance tasks (e.g., oil changes, filter replacements) to extend the bearing s life.

- **If mechanical experience is limited:** Have a professional mechanic perform the installation to avoid errors that could void warranties or cause further damage.

- **For long-term reliability:** Pair the bearing replacement with a full engine inspection to identify and address any underlying issues that may contribute to bearing wear.

In summary, the Wards Riverside crank bearing is a solid choice for riders who prioritize quality and longevity, provided the need for replacement is confirmed. For those on a tight budget or with minimal mechanical knowledge, weighing the immediate symptoms against the cost of replacement is key.

Details:

Fantastic factory original part for a perfect fit and operation. Up for sale is an original new old stock RIV Italian made Montgomery Wards 125cc model's. This for the right side of crank going into engine case. Please feel free to get in touch with any questions.

This item ships worldwide.

specifications bearingmotorcycleiz:

• brand: Benelli
• mpn: Mu9017
• part type: Bearing Crank

seller bearingmotorcycleiz:

• # reviews: 12581
• city: Philadelphia, Pennsylvania
• rating: 99.9%

offer bearingmotorcycleiz:

• started: June 10, 2026
• quantity: 2
• options: Ship-to-home
• sold: 0
• availability: In Stock

general bearingmotorcycleiz:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Bearings

returns bearingmotorcycleiz:

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

shipping bearingmotorcycleiz:

• cost: $9.95
• transit: 3-8 Days
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• type: Calculated

payments bearingmotorcycleiz:

• other
• wallet: Paypal
• credit card: Visa

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