HONDA 91102-122-008 Piston Pin Upper Rod Bearing Pin/upper MR50/NA50/NC50/NQ50/NX50/PA50

( Manufacturer Part Number: 91102-122-008 ), ( Type: Piston Pin/upper Rod Bearing ), ( Country Of Origin: Japan )

Review HONDA Oem Genuine Piston Pin/upper Rod Bearing Mr50/na50/nc50/nq50/nx50/pa50 fits NC50

The **Honda 91102-122-008 Piston Pin/Upper Rod Bearing** is a precision-engineered component designed exclusively for Honda s high-performance **MR50, NA50, NC50, NQ50, and NX50** engine families, ensuring optimal performance, durability, and reliability in both street and track applications. Crafted from **high-grade, heat-treated steel**, this aftermarket piston pin and upper rod bearing assembly is engineered to withstand the extreme stresses of forced induction, high RPM, and aggressive driving conditions, making it an ideal upgrade for enthusiasts seeking enhanced power output and longevity. The **smooth, polished surface** of the piston pin minimizes friction and wear, reducing heat buildup while maintaining precise alignment within the connecting rod, thereby improving overall engine efficiency. The **upper rod bearing** is precision-machined to Honda s exacting standards, featuring a **thin-walled, oil-impregnated design** that ensures consistent lubrication and load distribution, even under heavy loads. This assembly is a direct replacement for the OEM components, maintaining the same **10mm diameter** and **12mm length** specifications, ensuring a seamless fit without the need for modifications. Whether you're running a naturally aspirated setup or a turbocharged configuration, this piston pin and bearing set is built to deliver **superior strength, reduced wear, and improved engine longevity**, making it a must-have upgrade for anyone pushing their Honda engine to its limits.

### **Pros and Cons of buying a Honda 91102-122-008 Piston Pin/Upper Rod Bearing (MR50/NA50/NC50/NQ50/NX50/PA50)**

1. **OEM Quality and Compatibility** This part is a genuine Honda replacement, meaning it meets the manufacturer s exact specifications for fit, material, and performance. It should integrate seamlessly with your engine without requiring modifications.

2. **Durability and Reliability** Honda s aftermarket parts, especially those from authorized suppliers, are engineered to withstand the stresses of high-performance and daily driving. The piston pin and upper rod bearing are critical components that affect engine longevity, so a high-quality replacement reduces the risk of premature failure.

3. **Warranty Coverage** Purchasing from a reputable dealer or Honda-approved supplier often includes a warranty (e.g., 12 24 months), providing peace of mind against defects or early wear. This is particularly valuable if you plan to keep the engine for an extended period.

4. **Performance Consistency** Unlike aftermarket parts that may vary in quality, an OEM piston pin and bearing ensure consistent performance. This is especially important for engines like the MR50/NA50 series, where precision is key to maintaining power and efficiency.

5. **Ease of Installation** Since it s a direct replacement, the part should fit without requiring machining or adjustments, assuming the engine block and crankshaft are in good condition. This simplifies the rebuild process and reduces labor costs.

6. **Support for High-Mileage or Modified Engines** If your engine has high mileage or has been modified (e.g., forced induction, high-RPM tuning), a fresh piston pin and bearing can restore performance and prevent catastrophic failure. These components wear over time, and replacement is a proactive measure to avoid engine damage.

7. **Accessibility of Parts** Honda s popularity means these parts are widely available through dealers, online retailers, and specialty shops. This makes it easier to source the part quickly, even if you re not near a Honda service center.

---

1. **Higher Cost Compared to Aftermarket Alternatives** OEM parts are typically more expensive than aftermarket equivalents. For example, a genuine Honda piston pin and bearing set may cost significantly more than a third-party option from brands like Fel-Pro, Sealed Power, or Koyo. This can be a drawback if budget is a primary concern.

2. **Limited Customization** Unlike aftermarket parts, which may offer upgraded materials (e.g., forged pins, high-load bearings), the OEM part is standardized. If you re running extreme modifications (e.g., turbocharging, nitrous, or aggressive tuning), you might need to upgrade to aftermarket components for better performance and longevity.

3. **Potential for Counterfeit Parts** Buying from untrusted sellers (e.g., unscanned eBay listings, unknown online marketplaces) risks receiving counterfeit or salvaged parts. Always purchase from authorized dealers or reputable suppliers to avoid this issue.

4. **Installation Complexity** While the part itself is straightforward, the rebuild process can be labor-intensive, especially for DIYers without experience. Mistakes during installation (e.g., improper gap sizing, incorrect torque specs) can lead to premature failure or engine damage. Professional installation may be necessary, adding to the cost.

5. **Lead Time for Shipping** Depending on the supplier, OEM parts may have longer lead times compared to aftermarket options. If you re on a tight schedule, this could delay your project.

6. **Overkill for Minor Repairs** If your engine is otherwise healthy and you re only replacing these components due to routine maintenance, an aftermarket part may suffice without the premium price tag. For example, if the piston pins are only slightly worn, a high-quality aftermarket set could be a cost-effective alternative.

---

The **Honda 91102-122-008 piston pin/upper rod bearing** is an excellent choice if you prioritize **reliability, longevity, and OEM compatibility**. It s ideal for:

- **Engine rebuilds** where you want to restore the engine to factory specifications.

- **High-mileage or modified engines** where you need parts that meet Honda s exacting standards.

- **Peace of mind** with warranty coverage and consistent performance.

However, if **cost is a major factor** or you re running **aggressive modifications**, an aftermarket alternative (e.g., forged pins, high-performance bearings) may offer better value. Additionally, if you re not comfortable with engine rebuilds, factor in the labor cost of professional installation.

---

- You re doing a **full engine rebuild** and want to stick to Honda s specifications.

- Your engine is **high-mileage or modified**, and you want to ensure compatibility with other OEM components.

- You re purchasing from a **trusted dealer or authorized supplier** to avoid counterfeits.

- You re willing to pay the premium for **warranty coverage and reliability**.

- You re on a **tight budget** and the engine isn t heavily modified.

- You re running **forced induction or extreme modifications** and need upgraded materials (e.g., forged pins, high-load bearings).

- You re a **DIYer** who wants to save on labor costs and is comfortable sourcing high-quality aftermarket parts (e.g., **Fel-Pro, Sealed Power, or Koyo**).

**Final Note:** Always verify the **part number and authenticity** before purchasing, especially online. If possible, consult with a **Honda specialist or engine builder** to confirm whether the OEM part is the best fit for your specific application.

Details:

Genuine Honda.

part #: 91102122008 prices

• $14.99-$23.99

specifications bearingmotorcycleiz:

• for models: Nc50
• for makes: Honda
• mpn: 91102-122-008
• type: Piston Pin/upper Rod Bearing
• country of origin: Japan

shipping bearingmotorcycleiz:

• type: Calculated
• class: Standard, Expedited
• carrier: USPS, UPS
• cost: $0.00
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground
• transit: 3-8 Days

returns bearingmotorcycleiz:

• policy: No Returns

seller bearingmotorcycleiz:

• # reviews: 90921
• city: Englewood, Colorado
• rating: 99.9%

offer bearingmotorcycleiz:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: March 30, 2026

general bearingmotorcycleiz:

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

payments bearingmotorcycleiz:

• credit card: Diners-club
• wallet: Paypal
• other

Honda 91102-122-008 Is Similar To:

• 01.1408.025 0.25mm 89.25mm Piston Pro Oversize Kit Honda (29.5% similar) Some full face helmets are shown with tinted outer shield for display purposes only. Actual product may vary. Feel free to with any questions. Product images are for reference only...(January 24th, 2015)
• Honda 02.1402 Ring Piston Standard Set Pro Bore (40% similar) Some full face helmets are shown with tinted outer shield for display purposes only. Feel free to with any questions. Product images are for reference only. Pro x piston ring set standard bore 02...(December 29th, 2014)
• 0215-0114 Moose Rear Wheel Bearing Kit Honda Trx (33.3% similar) ...(March 27th, 2019)
• Kit Rod 03.1322 Connecting Honda Pro- (14.2% similar) Some full face helmets are shown with tinted outer shield for display purposes only. Feel free to with any questions. Pro x connecting rod kit 03. Actual product may vary. Product images are for reference only...(December 30th, 2014)
• 03.1075 Pro Honda Rod Kit Crank Rebuild (23.3% similar) New pro x premium quality rod kit for honda XR70 XR70R CRF70 CRF70FPRO-X connecting kits are made out of the toughest alloys available today...(March 27th, 2018)
• 03.1212 Pro Honda Rod Kit Crank Rebuild (23.3% similar) New pro x premium quality rod kit for honda CR125 CR125R pro-x connecting kits are made out of the toughest alloys available today...(May 8th, 2018)
• 06910-hm4-850 Honda Genuine Nos Bearing (35.7% similar) Be sure to check fitment prior purchase ensure you get the part need.this is a genuine honda nos part...(September 4th, 2017)
• Trx700 2009 Cylinder Honda Trx700xx Trx Oem 2008 Standard Bore 09310394 700 (31.5% similar) This is a standard bore cylinder in perfect condition. This cylinder had less than a few hundred miles on it. Switched out for a big bore. Still see the cross hatch from the factory. Cylinder from a 2009 TRX700. Like new condition...(February 18th, 2015)
• 1111111 Honda Cr Wrist Pin With Needle Bearing (35.3% similar) Shipping important: flat rate and free service is for the lower 48 states only. Unless stated otherwise in the , all parts listed are used and therefore sold as is condition with no warranty of any kind. It helps to get part numbers and cross reference them with sites such as . I have several parts ...(October 1st, 2018)
• 11352-hb3-000 Honda Genuine Nos Guide Drive Chain (34.5% similar) This is a genuine honda nos part. Be sure to check fitment prior purchase ensure you get the part need...(August 10th, 2018)
• 11361-ha2-000 Honda Genuine Nos Holder Balancer Bearing (37.2% similar) This is a genuine honda nos part...(August 10th, 2018)