WISECO 4524-W321568-24 Crankshaft Bearing Jet Ski 650SX

( Brand: Wiseco ), ( Manufacturer Part Number: 4524-W321568-24 ), ( Part Type: Bearing Jet Crankshaft )

Review WISECO Crankshaft Main Bearing Kawasaki Jet Ski fits JS650 1987–1993

The **Wisco 4524-W321568-24 Crankshaft Bearing Kit** is a precision-engineered replacement solution specifically designed for the **1987 1993 Kawasaki JS650 and 650SX Jet Ski**, ensuring optimal performance, durability, and reliability for this iconic outboard-powered watercraft. Crafted from high-grade **bearing steel** and treated with advanced **anti-friction coatings**, these bearings are engineered to withstand the demanding stresses of high-speed propulsion, frequent starts, and prolonged use in marine environments. Each bearing in this kit is meticulously machined to exacting tolerances, guaranteeing a seamless fit within the JS650 s crankshaft assembly while minimizing friction and heat buildup critical factors for maintaining smooth operation and extending the life of your jet ski s drivetrain. The **24-piece kit** includes all necessary components, such as main bearings, thrust washers, and retaining clips, eliminating the need for mixed-part purchases and ensuring a complete, hassle-free installation. Whether you re restoring a classic JS650 to factory specifications or upgrading an existing engine for enhanced performance, Wisco s bearings deliver the strength and precision required to handle the rigors of saltwater corrosion, vibration, and the relentless power demands of jet propulsion. Built to meet or exceed OEM standards, these bearings are a trusted choice among mechanics and enthusiasts alike, offering a cost-effective alternative to original equipment while providing the same level of dependability. Ideal for both DIYers and professional technicians, this bearing kit is a straightforward upgrade that helps prevent premature wear, reduces the risk of catastrophic failure, and ensures your Kawasaki JS650 remains a reliable and thrilling ride for years to come.

**Pros and Cons of buying a Wiseco 4524-W321568-24 Crankshaft Bearing for a 1987 1993 Kawasaki JS650/650SX Jet Ski**

### **Pros**

1. **High-Quality Material** Wiseco bearings are known for using premium materials, including high-grade steel and advanced coatings, which can improve durability and reduce wear compared to OEM or aftermarket alternatives.

2. **Improved Performance** These bearings are often designed to handle higher stress and temperatures better than stock components, potentially extending the life of the crankshaft assembly and reducing vibration.

3. **Compatibility** Wiseco offers direct replacements for many Kawasaki models, including the JS650/650SX, ensuring a proper fit without modification.

4. **Warranty and Reliability** Wiseco is a reputable brand with a strong reputation for durability, offering warranties that provide peace of mind against premature failure.

5. **Easier Installation** Since they are designed as direct replacements, they should fit into the existing housing without requiring machining or adjustments.

6. **Cost-Effective Upgrade** While not the cheapest option, they often represent a better long-term investment than OEM parts, which may wear out faster, especially in high-performance or heavily used jet skis.

### **Cons**

1. **Higher Upfront Cost** Wiseco bearings are more expensive than OEM or generic aftermarket options, which may be a deterrent for budget-conscious buyers.

2. **Potential Overkill for Stock Use** If the jet ski is used primarily for casual riding without aggressive conditions, the performance gains may not be noticeable enough to justify the extra cost.

3. **Installation Complexity** While designed for easy replacement, improper installation (e.g., misalignment or incorrect lubrication) could still lead to premature failure, requiring careful attention during assembly.

4. **Limited Availability of Parts** If the jet ski is heavily modified or used in extreme conditions, other components (e.g., seals, gaskets) may need upgrading as well, adding to the overall cost.

5. **No Guarantee of Longevity** Even high-quality bearings can fail if subjected to excessive stress, poor maintenance, or contamination (e.g., debris, improper lubrication).

### **Conclusion and Recommendation**

The Wiseco 4524-W321568-24 crankshaft bearing is a solid choice for owners of a 1987 1993 Kawasaki JS650/650SX who prioritize durability, performance, and long-term reliability. If the jet ski is used frequently, in rough conditions, or modified for performance, the investment in Wiseco bearings is justified. However, if the jet ski is primarily for occasional recreational use and the budget is tight, an OEM or high-quality aftermarket alternative (such as those from brands like **Kawasaki Performance Parts** or **Sea-Doo-compatible bearings**) may suffice.

If you can afford it and plan to keep the jet ski in good condition for years, **purchase the Wiseco bearing**. Ensure proper installation and maintenance to maximize its lifespan. If cost is a concern and the jet ski is lightly used, consider an OEM or reputable aftermarket alternative, but be prepared for potential shorter-term wear. Always pair the bearing with fresh lubrication and check for any accompanying seals or gaskets that may need replacement during the process.

Details:

Brand: Wiseco, model Number: 4524-W321568-24. Parts without fitment are to be assumed universal and may require vehicle modification. Wiseco Crankshaft Main Bearing for 1987 - 1993 Kawasaki JS650 650SX Jet Ski: Includes one crankshaft main bearing: 30 x 72 19mm. Compatibility: Years: Make: model: Application: Notes: 1983 - 1983 Ski-Descant 277, 1987 1993 KawasakiJS650 650SX, 1981 1984 HondaFL250 Odyssey, 1985 HondaFL350R 1989 1996 KawasakiJF650 TS, 1990 HondaFL400R Pilot, 1990 1999 SuzukiDR350Right, 1980 1984 Ski-Dictation 35 1986 1995 KawasakiJF650 X2, 1991 1995 KawasakiJL650 SC.

This is helpful if you are buying multiple items. I need to exchange an item.

part #: 4524w32156824 prices

• $188.02-$376.99

specifications bearingmotorcycleiz:

• for models: Js650
• for makes: Kawasaki
• for years: 1987-1993
• brand: Wiseco
• mpn: 4524-w321568-24
• part type: Bearing Jet Crankshaft

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offer bearingmotorcycleiz:

• started: March 6, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 3

general bearingmotorcycleiz:

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

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• # reviews: 79352
• rating: 99.8%
• city: Indiana, US

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