1. Motorcycle Engine Bearings For Sale
  2. sku: 11701153317631891
  3. WISECO 5051-W492680-ATV

WISECO 5051-W492680-ATV Crankshaft Bearing Left Kit Atv

fits model: Trx250r. make: Honda. year: 1987–1989.

5051-w492680-atv Wiseco Crankshaft Bearing Kit For 1987-1989 Honda Trx250r Atv Left

( Brand: Wiseco ), ( Manufacturer Part Number: 5051-W492680-ATV ), ( Part Type: Bearing Crankshaft )

Review WISECO Crankshaft Bearing Kit Honda Atv Left fits TRX250R 1987–1989

The **Wiseco 5051-W492680 ATV Crankshaft Bearing Kit** is a meticulously engineered, high-performance replacement solution specifically designed for the **1987 1989 Honda TRX250R ATV**, targeting the critical left-side crankshaft bearings to restore peak engine efficiency and longevity. Engineered from **precision-machined, high-grade steel**, these bearings feature a **dual-row ball design** optimized for smooth, low-friction operation, ensuring minimal wear and reduced heat buildup even under demanding off-road conditions. The kit includes **two high-quality, interference-fit bearings** that securely mount within the crankshaft journals, providing superior load-bearing capacity and resistance to fatigue critical for maintaining consistent power delivery and preventing catastrophic failure in rugged terrain. Wiseco s reputation for **OEM-quality components** is reinforced here, as these bearings meet or exceed Honda s original specifications, guaranteeing seamless integration with the stock engine assembly without the need for modification. Ideal for both **restoration projects** and **preventative maintenance**, this kit eliminates the risk of premature bearing wear, which can lead to costly engine damage, while also enhancing throttle response and overall drivability. Whether tackling rough trails or daily commutes, the **Wiseco 5051-W492680** ensures the TRX250R s crankshaft operates with the same reliability and precision as when it left the factory, making it an indispensable upgrade for any Honda ATV owner prioritizing durability and performance.

The Wiseco 5051-W492680 ATV crankshaft bearing kit is designed for the 1987 1989 Honda TRX250R, specifically for the left-side crankshaft bearings. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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**Pros:**

1. **High-Quality Materials:** Wiseco is known for using premium materials, including high-grade steel and advanced coatings, which enhance durability and reduce wear compared to OEM or aftermarket alternatives. The bearings are designed to handle the stresses of off-road use better than stock components.

2. **Improved Performance:** The kit often includes upgraded bearings that reduce friction and vibration, leading to smoother operation, better power transfer, and improved engine longevity. This can be particularly noticeable in an ATV that sees heavy use or rough terrain.

3. **Compatibility:** The kit is specifically engineered for the 1987 1989 Honda TRX250R, ensuring a precise fit without the need for modification. This reduces the risk of installation errors or compatibility issues.

4. **Durability:** Wiseco bearings are designed to withstand higher loads and temperatures than stock bearings, which can extend the life of the crankshaft and other related components. This is especially beneficial for riders who push their ATVs hard or modify them for performance.

5. **Ease of Installation:** The kit typically comes with clear instructions and may include tools or seals to simplify the replacement process. While the job still requires mechanical skill, Wiseco kits are often user-friendly compared to OEM parts.

6. **Warranty and Support:** Wiseco offers warranties on their products, providing some assurance against defects. Their customer service and technical support are generally reliable, which can be helpful if issues arise during installation or use.

7. **Cost-Effective Upgrade:** While not the cheapest option, the kit represents a cost-effective way to upgrade critical components without overhauling the entire engine. It can prevent costly crankshaft or bearing failures down the line.

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**Cons:**

1. **Cost:** Wiseco bearing kits are more expensive than OEM or generic aftermarket alternatives. For a budget-conscious buyer, this may be a significant upfront investment, especially if other engine components need replacement simultaneously.

2. **Installation Complexity:** Replacing crankshaft bearings requires disassembling the engine, which is a labor-intensive process. While the kit itself is straightforward, the time and effort required for installation may deter inexperienced mechanics or casual riders.

3. **Potential Overkill for Light Use:** If the ATV is primarily used for light recreational riding and has not experienced excessive wear or damage, upgrading to Wiseco bearings may not offer noticeable benefits. In such cases, OEM or lower-cost aftermarket bearings might suffice.

4. **Risk of Damage During Installation:** Improper handling of the crankshaft or bearings during installation can lead to scratches, misalignment, or other damage. This risk exists with any bearing replacement but is particularly relevant when working with high-precision components like Wiseco s.

5. **Limited Availability of Parts:** While Wiseco is a reputable brand, some smaller shops or online sellers may not stock their products. This could require ordering directly from Wiseco or a specialized supplier, which may involve shipping delays or higher costs.

6. **Mixed Reviews on Longevity:** While Wiseco bearings are generally durable, some users report that they may not last indefinitely, especially in extreme conditions (e.g., heavy modification, extreme heat, or neglect). Regular maintenance remains critical regardless of the bearing quality.

7. **Noisier Operation (Potential):** In some cases, upgraded bearings can produce slightly different noise characteristics compared to stock bearings. While this is usually minimal, it may be noticeable to riders who are highly attuned to engine sounds.

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**Conclusion:**

The Wiseco 5051-W492680 crankshaft bearing kit is a solid choice for riders who prioritize performance, durability, and reliability in their 1987 1989 Honda TRX250R. The benefits of reduced friction, improved engine longevity, and high-quality materials make it a worthwhile investment for those who use their ATV heavily or plan to modify it. However, the higher cost and complexity of installation may not justify the upgrade for casual riders or those on a tight budget. If the ATV shows signs of bearing wear (e.g., unusual noise, vibration, or oil contamination), the kit is a practical solution to prevent catastrophic failure. For lighter use, OEM or budget aftermarket bearings could be a more economical alternative.

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**Recommendation:** Purchase the Wiseco 5051-W492680 bearing kit if:

- You notice symptoms of bearing wear (e.g., engine noise, vibration, or oil leaks).

- You plan to modify the ATV or subject it to heavy use.

- You value long-term engine health and performance over cost savings.

- You are comfortable with the installation process or have access to a mechanic who can perform it.

Avoid the kit if:

- The ATV is used infrequently and shows no signs of bearing issues.

- You are working with a limited budget and can opt for OEM or lower-cost alternatives.

- You lack the mechanical skill or tools to install the bearings properly.

For most riders who use their TRX250R regularly and want to future-proof their engine, the Wiseco kit is a recommended upgrade. Pair it with a full engine service (e.g., oil change, filter replacement, and inspection of related components) to maximize its benefits.

Details:

This is helpful if you are buying multiple items. Wiseco Crankshaft Bearing Kit for 1987 - 1989 Honda TRX250R ATV Left: Application: Left.: Brand: Wiseco, model Number: 5051-W492680-ATV. Compatibility: Years: Make: model: Application: Notes: 1981 - 1983 HondaATC185SLeft, 1984 HondaTRX200Left, 1986 1987 HondaATC200XLeft, 1986 HondaATC200SRight, 2009 2013 Gas Gases 300Right, 250Right, 1984 HondaTRX200Right, 1983 HondaATC185SRight, 1987 HondaATC200XRight, 1987 1988 KawasakiKXF250 Hecate 4Left, 1991 1997 HondaTRX200D Footrace Type Aright, 1989 HondaTRX250RRight, II Left, 1998 2009 Gas MC 1990 HondaTRX200SXLeft, 1986 HondaATC200SLeft, 1989 HondaTRX250RLeft, 1990 HondaTRX200SXRight, 1992 HondaTRX250XRight, 1992 HondaTRX250XLeft, 4Right.

Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item.

part #: 5051w492680 price

  • $36.33

specifications bearingmotorcycleiz:

  • for models: Trx250r
  • for makes: Honda
  • for years: 1987-1989
  • brand: Wiseco
  • mpn: 5051-w492680-atv
  • part type: Bearing Crankshaft

payments bearingmotorcycleiz:

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general bearingmotorcycleiz:

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

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  • time: 30 Days
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  • type: Fixed
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  • class: Standard
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seller bearingmotorcycleiz:

  • rating: 99.8%
  • # reviews: 78507
  • city: Indiana, US

offer bearingmotorcycleiz:

  • quantity: 2
  • started: February 25, 2026
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
for models: trx250r, for makes: honda, for years: 1987-1989, part type: bearing crankshaft,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > engine bearings, sku: 11701153317631891,
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  • New. Offer #1 priced at $36.33 + $0.00 shipping estimate = $36.33* total. 1987 - 1992 Honda TRX250X Left. 1987 - 1989 Honda TRX250R Right.FREE SHIPPING

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