1. Motorcycle Engine Bearings For Sale
  2. sku: 11507895810693633
  3. WISECO MN/FM4F

WISECO MN-FM4F Top End Bearing Engine Pistons Cy MN/FM4F

fits model: Dt125. make: Yamaha. year: 1974–1981.

Fm4f Wiseco Mn/fm4f Top End Bearing For 1974-1981 Yamaha Dt125 - Engine Pistons Cy

( Brand: Wiseco ), ( Manufacturer Part Number: MN/FM4F ), ( Type: Top End Bearing ), ( Compatible Year: 1981 1980 1979 1978 1977 1976 1975 1974 ), ( Bundle Description: 1 Pc Genuine Wiseco Top End Bearing ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/fm4f Top End Bearing Yamaha Engine Pistons Cy fits DT125 1974–1981

WiseCo MN/FM4F Top End Bearing for 1974-1981 Yamaha DT125 Engine Pistons (CY)

The WiseCo MN/FM4F Top End Bearing for 1974-1981 Yamaha DT125 engine pistons (CY) is a high-quality replacement component designed to ensure smooth and efficient operation of your motorcycle. This top-end bearing is specifically engineered to fit perfectly into the 125cc DT series, offering a reliable solution for an essential part of your engine.

Manufactured by WiseCo, a renowned name in the automotive industry, this bearing boasts a superior design that enhances the overall performance of your DT125 engine. It is precision-made to exacting standards, ensuring a perfect fit and minimal play. The bearing features a durable construction that can withstand the harsh conditions of high-performance riding, providing long-lasting performance even under heavy loads.

The WiseCo MN/FM4F Top End Bearing for 1974-1981 Yamaha DT125 engine pistons (CY) is designed to reduce friction, ensuring a quiet and smooth operation. It is easy to install, making it a convenient choice for both professional mechanics and DIY enthusiasts. The bearing comes with comprehensive installation instructions to guide you through the process, ensuring a quick and hassle-free installation.

Investing in a WiseCo MN/FM4F Top End Bearing for your 1974-1981 Yamaha DT125 engine is a smart choice for maintaining the performance and longevity of your motorcycle. With its superior quality, durability, and easy installation, this bearing is an essential upgrade for any Yamaha DT125 owner looking to enhance the performance of their bike while ensuring a smooth and reliable ride.

**Pros of Wiseco MN/FM4F Top End Bearing for 1974-1981 Yamaha DT125 Engine Pistons:**

1. **Improved Performance:** Wiseco pistons are known for their high-quality design and materials, which can help increase horsepower and torque, potentially improving the overall performance of your DT125 engine.

2. **Durability:** Wiseco pistons are designed to handle high compressions and temperatures, making them more durable and resistant to engine wear and tear compared to stock pistons.

3. **Custom Options:** Wiseco offers various options for piston designs, such as the MN and FM4F, which can be tailored to specific performance goals and engine modifications.

**Cons of Wiseco MN/FM4F Top End Bearing for 1974-1981 Yamaha DT125 Engine Pistons:**

1. **Cost:** Wiseco pistons are generally more expensive than stock pistons. The cost difference may be significant, especially for budget-conscious riders.

2. **Installation Complexity:** Installing aftermarket pistons like Wiseco's may require more skill and time compared to installing stock pistons. This could potentially increase the overall cost of the upgrade.

3. **Potential Compatibility Issues:** While Wiseco pistons are designed to fit the DT125 engine, there is a possibility of minor discrepancies that might require additional parts or modifications for a seamless installation.

**Conclusion:**

While Wiseco pistons offer several benefits, such as improved performance and durability, the higher cost and potential complexity of installation could be a deterrent for some riders. If you are looking to significantly enhance the performance of your Yamaha DT125 and are comfortable with the associated costs and potential complexities, a Wiseco piston kit could be a worthwhile investment. However, if you are on a tight budget or prefer a more straightforward upgrade, stock pistons might be a more practical choice. It's essential to weigh these factors and consider your specific needs and goals before making a decision.

Details:

Wiseco Top End Bearing for 1974 1981 Yamaha DT125 - Engine Pistons cy: Status: In Stock.

part #: mnfm4f price

  • $30.49

specifications bearingmotorcycleiz:

  • for models: Dt125
  • for makes: Yamaha
  • for years: 1974-1981
  • brand: Wiseco
  • mpn: Mn/fm4f
  • type: Top End Bearing
  • compatible year: 1981 1980 1979 1978 1977 1976 1975 1974
  • bundle description: 1 Pc Genuine Wiseco Top End Bearing
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

seller bearingmotorcycleiz:

  • # reviews: 16323
  • city: Multiple warehouses
  • rating: 98.6%

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offer bearingmotorcycleiz:

  • availability: In Stock
  • started: January 19, 2026
  • options: Ship-to-home
  • quantity: 1
  • sold: 0

shipping bearingmotorcycleiz:

  • class: Standard
  • service: Standard
  • cost: $0.00
  • type: Fixed
  • transit: 3-7 Days

returns bearingmotorcycleiz:

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

general bearingmotorcycleiz:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Bearings
for models: dt125, for makes: yamaha, for years: 1974-1981, type: top end bearing, compatible year: 1981 1980 1979 1978 1977 1976 1975 1974, bundle description: 1 pc genuine wiseco top end bearing, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > engine bearings, sku: 11507895810693633,
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