KALAMA 93102-20485-00 Crank Crankshaft Bearing Seals Set Kit

( Brand: Kalama ), ( Bundle Description: Crankshaft Main Bearing, Oil Seal ), ( Compatible Make: For Yamaha ), ( Country Of Origin: Japan ), ( Custom Bundle: Yes ), ( Type: Crankshaft Main Bearing Oil Seal Kit ), ( UPC: 931022048500 )

Review KALAMA Crank Crankshaft Main Bearing And Seals Kit Set Yamaha fits YZ125 YZ 125 2001–2004

The **Kalama 93102-20485-00 Crankshaft Bearing Seals Kit** is a meticulously engineered aftermarket replacement solution designed specifically for Yamaha YZ125 models produced between 2001 and 2004, ensuring optimal performance, durability, and reliability for your off-road adventure. This high-quality kit is crafted to address the critical components responsible for sealing the crankshaft bearings, preventing oil leaks, and maintaining proper lubrication within the engine s lower end. Engineered with precision, the kit features **OEM-quality rubber seals** that are reinforced with durable synthetic materials, providing superior resistance to heat, oil, and mechanical stress key factors that contribute to extended seal life and reduced wear on the crankshaft and connecting rod bearings. The seals are precision-molded to fit snugly within the engine s crankcase, eliminating gaps that could lead to oil leakage or contamination, which are common culprits behind premature engine failure in high-performance or heavily ridden dirt bikes. Beyond their functional integrity, these seals are designed with **easy installation** in mind, featuring a clean, interference-free fit that simplifies the replacement process without requiring specialized tools or excessive disassembly. Whether you re tackling rough trails, aggressive riding conditions, or simply maintaining your bike for long-term reliability, this Kalama kit offers a dependable upgrade that aligns with the demanding requirements of modern off-road motorcycles. Trusted by mechanics and enthusiasts alike for its consistency and performance, this kit is an essential component for any Yamaha YZ125 owner looking to preserve engine health, enhance longevity, and avoid costly repairs associated with seal failure.

### **Pros and Cons of buying a Kalama 93102-20485-00 Crankshaft Bearing Seals Kit for Yamaha YZ125 (2001-2004)**

1. **OEM Quality and Compatibility** Kalama is a well-known manufacturer that produces high-quality aftermarket parts designed to match or exceed OEM specifications. This kit is specifically engineered for the Yamaha YZ125, ensuring a proper fit and reliable performance.

2. **Durability and Performance** The seals in this kit are made from high-grade materials that resist wear, oil leakage, and heat better than standard OEM parts. This can extend the life of your engine and prevent costly internal damage from contamination.

3. **Easy Installation** The kit includes all necessary seals (crankshaft oil seals, bearing seals, and possibly gaskets) in a single package, simplifying the replacement process. Many users report that the installation is straightforward, especially with the right tools and patience.

4. **Cost-Effective Long-Term Solution** While the upfront cost may seem higher than generic seals, replacing worn seals prevents engine damage (such as oil leaks, crankshaft wear, or bearing failure), which can be far more expensive to repair.

5. **Reliability for Off-Road Use** The YZ125 is a high-stress bike, especially in rough terrain. Quality seals reduce the risk of oil leaks during aggressive riding, which can lead to catastrophic engine failure if ignored.

6. **Widely Available and Trusted Brand** Kalama is a reputable brand with a strong reputation in the off-road and ATV/motorcycle aftermarket. Many mechanics and riders trust their products for critical engine components.

7. **Prevents Contamination** Worn seals can allow dirt, debris, and moisture to enter the engine, accelerating wear on bearings and the crankshaft. This kit helps maintain a clean internal environment.

---

1. **Higher Upfront Cost** Compared to generic or no-name seals, Kalama s kit is more expensive. While it justifies the price with quality, budget-conscious buyers may hesitate if they re unsure about the necessity of a full kit.

2. **Requires Some Mechanical Skill** Replacing crankshaft seals and bearings is not a beginner-friendly task. It involves disassembling the engine, removing the crankshaft, and ensuring proper alignment during installation. Mistakes can lead to damage or improper sealing.

3. **Time-Consuming Process** The job requires significant time, especially for those without prior experience. It may take several hours to complete, depending on tool availability and familiarity with the process.

4. **Potential for Counterfeit Products** Since Kalama is a well-known brand, there is a risk of purchasing counterfeit or low-quality knockoffs, especially from unauthorized sellers. Buying from a trusted dealer or official distributor minimizes this risk.

5. **Additional Costs for Tools or Labor** If you don t already have the necessary tools (e.g., seal pullers, torque wrench, bearing driver), you may need to invest in them. Alternatively, paying a mechanic to perform the job can add to the total cost.

6. **Mixed Reviews on Longevity** While Kalama seals are generally durable, some users report that they may not last as long as OEM parts in extreme conditions (e.g., heavy-duty racing or extreme off-roading). However, this varies by riding style and maintenance habits.

7. **Risk of Over-Tightening** Improper torque on seals or bearings can cause leaks or damage. Beginners may struggle with achieving the correct tension, leading to potential issues down the line.

---

The **Kalama 93102-20485-00 crankshaft bearing seals kit** is a **high-quality, reliable choice** for Yamaha YZ125 owners (2001-2004) who prioritize engine longevity and performance. The pros such as OEM-level compatibility, durability, and ease of installation far outweigh the cons for most riders, especially those who plan to keep their bikes in good condition for years.

However, the **higher cost, required mechanical skill, and time investment** make it less ideal for casual riders or those on a tight budget who may not perform the job themselves. If you re comfortable with engine work or have a trusted mechanic, this kit is a **strong recommendation** to prevent costly engine damage from worn seals.

For riders who are unsure about the condition of their seals or lack experience with engine repairs, **checking for leaks, unusual noise, or oil contamination** before purchasing is wise. If the seals are already failing, replacing them with a quality kit like this will save money in the long run.

- You notice oil leaks, crankshaft noise, or excessive wear in your YZ125.

- You re prepared to invest time and effort (or pay for professional labor) to install it properly.

- You want a reliable, long-lasting solution that matches or exceeds OEM standards.

- You re a beginner with no engine repair experience and cannot safely perform the installation.

- Your bike is already in poor condition, and other major repairs (e.g., clutch, transmission) are needed simultaneously.

- You re on a tight budget and cannot justify the upfront cost without clear signs of seal failure.

For most serious riders, **this kit is a worthwhile investment** to maintain engine health and avoid catastrophic failures. Always source it from a reputable dealer to ensure authenticity.

Details:

Warranty For detailed information, kindly refer to the listing or feel free inquire with us directly. More Choices. Best Taiwan Performance Oil Seal. Crankshaft Oil Seal x 1 Replace OE P/N: 93102-20485-00.

Always verify the certifications reviews for specific product you are considering. You get what you pay for. Item includes. Nacho Main Bearing Made In Japan.

Yamaha YZ125 01 04. Crankshaft Main Bearing x 2 Replace OE P/N: 93306-37204-00. Complimentary shipping is available within the USA. Crank Crankshaft Main Bearing Seals Kit Set for Yamaha 2001 2004 YZ125 YZ 125.

part #: 931022048500 prices

• $240.00-$699.00

specifications bearingmotorcycleiz:

• for models: Yz125, Yz, 125
• for makes: Yamaha
• for years: 2001-2004
• brand: Kalama
• bundle description: Crankshaft Main Bearing, Oil Seal
• compatible make: For Yamaha
• country of origin: Japan
• custom bundle: Yes
• type: Crankshaft Main Bearing Oil Seal Kit
• upc: 931022048500

offer bearingmotorcycleiz:

• sold: 0
• availability: In Stock
• quantity: 2
• options: Ship-to-home
• started: February 24, 2026

payments bearingmotorcycleiz:

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

returns bearingmotorcycleiz:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

seller bearingmotorcycleiz:

• rating: 100.0%
• city: Walnut, California
• # reviews: 250

general bearingmotorcycleiz:

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

shipping bearingmotorcycleiz:

• class: Standard
• carrier: UPS
• transit: 4-8 Days
• service: UPS Ground
• cost: $0.00
• type: Fixed

Kalama 93102-20485-00 Is Similar To:

• Kalama 0760304261 Crankshaft Bearing And Oil Seal Kit For Ktm 85sx 04 24 105sx 09 (60.9% similar) Crankshaft bearing oil seal kit for KTM 85SX 04 24, 105SX 09. Complimentary shipping is available within the USA. Item fits KTM model's. Always verify the certifications reviews for specific product you are considering. 22X52X15 ball bearing x warranty for detailed information, kindly refer to the ...(February 23rd, 2026)
• Kalama 93101-14164-00 For Yamaha Yz250f Main Bearing And Oil Seal Kit 01 13 (60.7% similar) Warranty for detailed information, kindly refer to the listing or feel free inquire with us directly. YZ250F 2001 2013 . You get what you pay for. Replace OE p/n: 93306-20648-00. Main bearing x always verify the certifications reviews for specific product you are considering. Complimentary ...(February 24th, 2026)