ATHENA MNB120150163 Needle Bearing M-002

( Brand: Athena ), ( Manufacturer Part Number: MNB120150163 ), ( Part Type: Bearing ), ( Vendor: Lionparts ), ( Ships From: United States )

Review ATHENA Needle Bearing Yamaha fits YZ80 1974–1982

The **Athena MNB120150163 M-002 Needle Bearing** is a precision-engineered, high-performance replacement bearing designed specifically for Yamaha YZ80 dirt bikes manufactured between 1974 and 1982. This meticulously crafted component is engineered to restore optimal functionality to the front fork s steering head assembly, ensuring smooth, responsive handling and prolonged durability. Constructed from a robust, corrosion-resistant alloy steel, the needle bearing features a tightly packed array of precision-ground steel needles encased within a durable outer cage, allowing for minimal friction and maximum load distribution. Its compact yet sturdy design fits seamlessly into the original Yamaha YZ80 s steering head housing, maintaining the bike s intended geometry while reducing wear on critical components like the head tube and steering stem. Ideal for riders seeking to enhance their bike s performance or restore it to factory-like condition, this bearing eliminates the need for frequent adjustments and minimizes the risk of premature failure, making it an indispensable upgrade for both restoration projects and routine maintenance. Whether used in competition or for daily riding, the Athena MNB120150163 M-002 needle bearing delivers the reliability and smoothness expected from a premium aftermarket solution, ensuring a seamless riding experience on and off the track.

### Pros and Cons of buying a Athena MNB120150163 M-002 Needle Bearing for Yamaha YZ80 (1974 1982)

1. **Direct Fitment** The Athena MNB120150163 is specifically designed for the Yamaha YZ80 engine, ensuring compatibility with models from 1974 to 1982. This reduces the risk of sizing issues or installation problems that can arise with generic bearings.

2. **High-Quality Construction** Athena is a reputable manufacturer known for producing durable, precision-engineered needle bearings. These bearings are designed to handle the stress of high-speed rotation and lateral loads, which is critical for a dirt bike engine.

3. **Reduced Friction and Wear** Needle bearings minimize friction between moving parts, such as the crankshaft and engine housing. This can lead to smoother operation, reduced heat generation, and extended engine life if the bearing is in good condition.

4. **Ease of Installation** Since the bearing is a direct replacement, it should fit into the existing housing without requiring modifications. This makes it a straightforward upgrade or repair option for mechanics or DIY enthusiasts.

5. **Cost-Effective Solution** Compared to rebuilding or replacing the entire engine, replacing a worn needle bearing is a relatively inexpensive fix. This can save significant time and money, especially for older bikes where parts may be harder to source.

6. **Improved Performance** A properly functioning needle bearing can enhance engine responsiveness and reliability, particularly if the original bearing was worn or damaged. This is especially beneficial for bikes used frequently or in demanding conditions.

7. **Availability and Reliability** Athena bearings are widely available through motorcycle parts suppliers, both online and in physical stores. Their reputation for quality ensures that you re less likely to encounter counterfeit or low-quality products.

---

1. **Age of the Bike** The Yamaha YZ80 from the 1970s is an older model, and while the bearing itself may be a direct fit, other components (such as the crankshaft, engine housing, or seals) may be worn or deteriorated. Replacing just the bearing may not fully resolve performance issues if other parts are failing.

2. **Potential for Counterfeit Products** While Athena is a trusted brand, there is a risk of purchasing counterfeit or low-quality bearings, especially if buying from unverified sellers. Always source from reputable dealers or authorized distributors to avoid this risk.

3. **Installation Challenges** If the bike has not been maintained regularly, the engine housing or surrounding components may be corroded or damaged. Removing and installing the bearing could require additional work, such as cleaning or replacing seals or gaskets, which may not be immediately obvious.

4. **Limited Longevity Guarantee** Unlike modern bearings, Athena s older models may not come with a warranty or extended guarantee. If the bearing fails prematurely due to manufacturing defects, you may be out of luck without proof of purchase or additional support.

5. **Skill Dependency** While the bearing is a direct replacement, installing it correctly requires some mechanical skill. Improper installation such as not lubricating the bearing or damaging the housing can lead to premature failure or even engine damage. Beginners may need to seek professional help.

6. **Compatibility with Modified Engines** If the engine has been modified (e.g., crankshaft upgrades, porting, or forced induction), the stock bearing may not be sufficient for the increased stress. In such cases, a higher-quality or oversized bearing may be necessary.

7. **Cost of Additional Parts** Beyond the bearing itself, you may need to purchase new seals, gaskets, or lubricants to ensure a proper installation. These additional costs can add up, especially if other components are also worn.

---

The Athena MNB120150163 needle bearing is a **strong, cost-effective solution** for restoring or maintaining the performance of a Yamaha YZ80 from 1974 to 1982. Its direct fitment, durability, and ease of installation make it an attractive option for both mechanics and enthusiasts looking to avoid a full engine rebuild. However, it is not a "magic fix" if other parts of the engine are degraded, the bearing alone may not fully resolve performance issues.

For the best results, pair the bearing replacement with a thorough inspection of the crankshaft, seals, and engine housing. If you lack mechanical experience, consider consulting a professional to ensure proper installation and avoid potential pitfalls.

---

- **Buy from a reputable source** (e.g., official Athena distributors, trusted online retailers like Amazon, or motorcycle parts specialists like Cycle World or RockAuto) to avoid counterfeit products.

- **Inspect the engine** before and after installation. Check for signs of wear on the crankshaft journals, housing, and seals. Replace any compromised parts to maximize the bearing s lifespan.

- **Lubricate properly** using high-quality engine oil or grease designed for needle bearings to ensure smooth operation.

- **Consider professional installation** if you are unsure about the process, as improper handling can lead to damage or premature failure.

- **Monitor performance** after installation. If the bike exhibits unusual noises, vibrations, or oil leaks, address the issue promptly to prevent further damage.

**Final Verdict:** The Athena MNB120150163 is a **highly recommended** bearing for Yamaha YZ80 owners, provided you address any underlying engine issues and ensure proper installation. It strikes a balance between affordability and quality, making it a practical choice for restoring or maintaining your bike.

Details:

Fitment: Yamaha YZ100 1982 -1984.: Athena Needle Bearing For Yamaha YZ80 1974 1982: 1974 1982. Note: Image is for reference only, actual product may vary slightly. Free Ground Shipping.

Some items are available silver-plated and ideal for use in conditions of great rotational speed, high temperatures sudden acceleration. Brand: Athena, Part Number: MNB120150163. Athena needle bearings attach to the dudgeon pin and their high quality enables less frequent maintenance at an excellent price-quality ratio. OEM: 93310-11268-00.

To ensure you're receiving exactly what you want, some orders are sourced from various shipping facilities. Greater resistance to stress compared the original.

part #: mnb120150163 prices

• $30.57-$169.62

specifications bearingmotorcycleiz:

• for models: Yz80
• for makes: Yamaha
• for years: 1974-1982
• brand: Athena
• mpn: Mnb120150163
• part type: Bearing
• vendor: Lionparts
• ships from: United States

general bearingmotorcycleiz:

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

shipping bearingmotorcycleiz:

• cost: $0.00
• carrier: FedEx
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• transit: 3-7 Days

seller bearingmotorcycleiz:

• city: Wilmington,
• # reviews: 251039
• rating: 99.8%

returns bearingmotorcycleiz:

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

payments bearingmotorcycleiz:

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

offer bearingmotorcycleiz:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 5
• started: May 11, 2026

Athena MNB120150163 Is Similar To:

• 22-88292 Factory Effex Apparel Athena Yamaha Racing Team Hoody (23.4% similar) Mid-weight fleece screen printed graphics, contrasting draw-cords officially licensed product. 80 cotton 20 poly 7OZ...(June 6th, 2019)
• P400250850982 Athena Gasket Set For Kawasaki Zg 1200 A B 1986-2003 (34.8% similar) Brand new gasket set. Will fit Kawasaki G 1200 a...(January 7th, 2016)
• Kit Athena Yamaha Complete E4859-116 Reduced Gasket (30.8% similar) Feel free to with any questions. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a perfect seal even at extremely high ...(December 28th, 2014)
• Cylinder Standard P400485100008 Athena 54.00mm Yamaha Race Bore Kit (28.1% similar) Feel free to with any questions. Athena standard bore race cylinder kit some full face helmets are shown with tinted outer shield for display purposes only. 00MM bore 08 yamaha brand model std. Product images are for reference only. 54MM bore race kit manufacturer P/N 08 color size kits include ...(February 19th, 2015)
• P400485600053 Gasket Athena Top Yamaha Kit (29.6% similar) A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a perfect seal even at extremely high temperatures high temperature blue ...(February 21st, 2015)
• P400485600206 Yamaha Gasket Athena Top Kit (27.8% similar) Actual product may vary. Feel free to with any questions. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a perfect seal ...(February 17th, 2015)
• Yamaha P400485600254 Gasket Kit Top Athena (18.5% similar) Actual product may vary. Feel free to with any questions. Some full face helmets are shown with tinted outer shield for display purposes only. Product images are for reference only. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core ...(February 10th, 2015)
• Yamaha Top P400485600986 Athena Gasket Kit (20.4% similar) Actual product may vary. A steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a perfect seal even at extremely high temperatures high temperature blue silicone beading on most critical flat gaskets top end gasket kits include all ...(February 10th, 2015)
• Gasket 1 Yamaha Complete Kit P400485850115 1 P400485850115 Athena (24.4% similar) Feel free to with any questions. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a perfect seal even at extremely high ...(December 20th, 2014)
• P400485850254 Gasket Kit Athena Complete Yamaha (30.1% similar) Feel free to with any questions. Some full face helmets are shown with tinted outer shield for display purposes only. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength ...(February 18th, 2015)
• Gasket P400485850267 Kit Complete Yamaha Athena (30.1% similar) Product images are for reference only. Feel free to with any questions. A head gaskets feature rubber coated spring steel construction soft steel base gaskets are rubber coated steel core materials feature high springbok and superior tensile strength revolutionary transparent coating guarantees a ...(December 31st, 2014)