1. Motorcycle Engine Bearings For Sale
  2. sku: 11529971935985632
  3. WISECO MN/6XT4

WISECO MN-6XT4 Top End Bearing Engine Pistons MN/6XT4

fits model: Ex440. make: Yamaha. year: 1976–1981.

6xt4 Wiseco Mn/6xt4 Top End Bearing For 1976-1981 Yamaha Ex440 - Engine Pistons Tn

( Brand: Wiseco ), ( Manufacturer Part Number: MN/6XT4 ), ( Type: Top End Bearing ), ( Compatible Year: 1981 1980 1979 1978 1977 1976 ), ( Bundle Description: 1 Pc Genuine Wiseco Top End Bearing ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/6xt4 Top End Bearing Yamaha Engine Pistons Tn fits EX440 1976–1981

WiseCo MN/6XT4 Top End Bearing for 1976-1981 Yamaha EX440 Engine Pistons

Experience unparalleled engine performance with the WiseCo MN/6XT4 Top End Bearing designed specifically for the pistons of the 1976-1981 Yamaha EX440 engine. This high-quality bearing is meticulously engineered to deliver exceptional durability, reliability, and efficiency, ensuring a smooth, powerful ride every time you hit the trail.

The WiseCo MN/6XT4 Top End Bearing boasts a precision-machined design that ensures a perfect fit for your EX440 engine. Made from a superior grade of steel, this bearing is designed to withstand the rigors of off-road riding, providing exceptional load-bearing capacity and resilience against wear and tear.

The MN/6XT4 bearing features a proprietary surface treatment that reduces friction and heat generation, promoting a longer lifespan and minimizing the risk of engine seizure. This treatment also enhances the bearing's ability to maintain its roundness under high loads, ensuring optimal piston movement and engine performance.

Installation of the WiseCo MN/6XT4 Top End Bearing is a straightforward process, making it an ideal upgrade for both amateur and professional riders. With its high-performance design and easy installation, this bearing is a must-have for any enthusiast looking to take their Yamaha EX440 to the next level.

Invest in the WiseCo MN/6XT4 Top End Bearing today and experience the difference a high-quality bearing can make in your Yamaha EX440 engine. Upgrade your ride and enjoy the confidence that comes with knowing you've chosen a top-tier product from a trusted manufacturer.

Pros of buying WiseCo MN/6XT4 top end bearing for 1976-1981 Yamaha EX440 engine pistons:

1. Reputable Manufacturer: WiseCo is a well-known aftermarket parts manufacturer, which is a good sign of quality and reliability.

2. Compatibility: The WiseCo MN/6XT4 top end bearing is specifically designed for the Yamaha EX440 engine, ensuring a proper fit and function.

3. Durability: WiseCo products are known for their durability and long lifespan, which can save you money in the long run by reducing the need for frequent replacements.

4. Improved Performance: Upgrading to new bearings can help improve the overall performance of your engine by reducing wear and friction.

Cons of buying WiseCo MN/6XT4 top end bearing for 1976-1981 Yamaha EX440 engine pistons:

1. Price: Aftermarket parts can be more expensive than OEM (Original Equipment Manufacturer) parts.

2. Quality Concerns: While WiseCo is a reputable manufacturer, there is always a possibility that a defective part could be shipped.

3. Lack of Warranty: Aftermarket parts like WiseCo often do not come with the same level of warranty as OEM parts.

4. Potential Fitment Issues: While the WiseCo MN/6XT4 top end bearing is designed for the Yamaha EX440 engine, there is a slight chance that it may not fit perfectly, especially if your engine has undergone significant modifications.

Conclusion:

The WiseCo MN/6XT4 top end bearing for the Yamaha EX440 engine is a good choice for those looking to upgrade their engine's bearings for improved performance and durability. However, it is important to consider the potential cost and fitment issues before making a purchase. If you are unsure, it may be worth consulting with a mechanic or doing more research to ensure that this is the right part for your specific needs.

Recommendation:

If you are comfortable with the potential costs and fitment issues, and you are looking to improve the performance and lifespan of your Yamaha EX440 engine, the WiseCo MN/6XT4 top end bearing is a solid choice. If you are unsure, it may be worth considering OEM parts or consulting with a mechanic for advice.

Details:

Wiseco Top End Bearing for 1976 1981 Yamaha EX440 - Engine Pistons tn: Status: In Stock.

part #: mn6xt4 price

  • $31.13

specifications bearingmotorcycleiz:

  • for models: Ex440
  • for makes: Yamaha
  • for years: 1976-1981
  • brand: Wiseco
  • mpn: Mn/6xt4
  • type: Top End Bearing
  • compatible year: 1981 1980 1979 1978 1977 1976
  • bundle description: 1 Pc Genuine Wiseco Top End Bearing
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

seller bearingmotorcycleiz:

  • # reviews: 16384
  • city: Multiple warehouses
  • rating: 98.6%

offer bearingmotorcycleiz:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: January 20, 2026

shipping bearingmotorcycleiz:

  • transit: 2-6 Days
  • service: Standard
  • cost: $0.00
  • type: Fixed
  • class: Standard

payments bearingmotorcycleiz:

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

general bearingmotorcycleiz:

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

returns bearingmotorcycleiz:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: ex440, for makes: yamaha, for years: 1976-1981, type: top end bearing, compatible year: 1981 1980 1979 1978 1977 1976, 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: 11529971935985632,
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