SUZUKI 12521-28002 Ts Crankshaft Bearing

( Manufacturer Part Number: 12521-28002 ), ( Part Type: Bearing Crankshaft )

Review SUZUKI Gifts 185 Crankshaft Bearing Stay fits SIERRA TS185 1981

The **Suzuki 1981 TS185 Sierra Crankshaft Bearing (Part Number: 12521-28002)** is a precision-engineered component designed to ensure smooth, reliable operation of the iconic TS185 engine, a classic 185cc two-stroke powerplant renowned for its simplicity and performance in off-road and utility applications. This bearing is a critical part of the crankshaft assembly, providing essential support and reducing friction between the crankshaft journals and the engine block s main bearing caps. Crafted from high-quality, heat-treated steel and coated with a durable, low-friction material likely a lead-based or aluminum-tin alloy this bearing is engineered to withstand the demanding conditions of high-speed rotation, heavy loads, and the inherent vibrations of two-stroke engines. Its robust construction ensures longevity, even under the stress of frequent use, making it a vital replacement for worn or damaged bearings that could otherwise lead to catastrophic engine failure, such as crankshaft seizure or catastrophic internal damage. The TS185 Sierra, a popular choice among off-road enthusiasts and utility riders, relies on components like this bearing to deliver the consistent power and durability that define its legacy. Whether restoring a vintage machine or maintaining a well-loved classic, this bearing is an essential upgrade for those seeking to preserve the performance and reliability of their Suzuki TS185, ensuring it continues to roar with the same spirit as the day it was built.

Buying a replacement **Suzuki 12521-28002 (1981 TS185 Sierra crankshaft bearing)** involves weighing several factors to determine whether it is the right choice for your needs. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Suzuki 12521-28002 Crankshaft Bearing**

1. **Direct Fitment and Compatibility**

The bearing is specifically designed for the **1981 Suzuki TS185 Sierra**, ensuring a perfect fit without modifications. This reduces the risk of installation errors or compatibility issues that can arise with aftermarket or generic parts.

2. **Reliability and Durability**

Suzuki s original equipment (OEM) bearings are engineered to meet the manufacturer s strict quality standards. They are built to withstand the stress of the TS185 s engine, providing long-term performance if properly installed and maintained.

3. **Performance Consistency**

Using an OEM bearing ensures that the engine s power delivery, smoothness, and efficiency remain consistent with the original specifications. Aftermarket bearings, even high-quality ones, may not replicate the exact performance characteristics of the original part.

4. **Warranty and Support**

Purchasing from an authorized Suzuki dealer or a reputable supplier often includes a warranty or return policy. This provides peace of mind in case the bearing fails prematurely due to defects.

5. **Ease of Installation**

Since the bearing is designed for the specific model, it should align correctly with the crankshaft and engine block without requiring extensive machining or adjustments. This simplifies the repair process, especially for DIYers.

6. **Prevents Engine Damage**

A failing crankshaft bearing can lead to catastrophic engine failure, including crankshaft damage or bearing shell collapse. Replacing it with an OEM part reduces the risk of such costly and time-consuming repairs.

7. **Resale Value**

If you plan to sell the motorcycle later, having an OEM bearing installed can make the bike more appealing to buyers who prefer authenticity and reliability.

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### **Cons of buying a Suzuki 12521-28002 Crankshaft Bearing**

1. **Cost**

OEM parts are typically more expensive than aftermarket alternatives. The Suzuki 12521-28002 bearing may cost significantly more than a comparable aftermarket bearing, which could be a deterrent for budget-conscious buyers.

2. **Limited Availability**

Older parts like this may be harder to find, especially if you re not purchasing directly from a dealer or a specialized motorcycle parts supplier. This could require additional time and effort to source the part.

3. **Potential for Overkill**

If the bearing failure is due to a minor issue (e.g., oil starvation, improper maintenance), replacing only the bearing may not address the root cause. In such cases, investing in an aftermarket bearing might be sufficient, and the extra cost of the OEM part could be unnecessary.

4. **Long Lead Times**

Even if the part is available, shipping times from suppliers (especially international ones) can be lengthy. This may delay your repair project if you re in a hurry.

5. **Mixed Quality Perception**

While Suzuki s reputation for quality is strong, some buyers assume that all OEM parts are flawless. In rare cases, defects can occur, though this is uncommon with well-maintained parts from trusted sources.

6. **No Upgrades**

Unlike aftermarket bearings, which may offer improved materials (e.g., higher-grade steel, better lubrication properties), the OEM bearing does not provide any performance upgrades. If you re looking to enhance engine longevity or power, aftermarket options might be preferable.

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### **Conclusion**

The **Suzuki 12521-28002 crankshaft bearing** is an excellent choice if your priority is **reliability, exact fitment, and long-term engine health**. It is the safest option for restoring the TS185 Sierra to its original specifications and ensuring compatibility with the rest of the engine components. However, the higher cost and potential availability issues may make it less ideal for buyers on a tight budget or those who prioritize convenience over authenticity.

If you re certain about the bearing s failure and have the budget, the OEM part is the most prudent investment. Alternatively, if cost is a concern and you re comfortable with aftermarket options, a high-quality aftermarket bearing (from a reputable brand like **SKF, NTN, or JE** with proper sizing) could be a viable alternative, provided it meets the original specifications.

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### **Recommendation**

Purchase the **Suzuki 12521-28002 OEM crankshaft bearing**. Buy it from an **authorized Suzuki dealer, a trusted motorcycle parts supplier (e.g., Cycle World, Motorcycle Parts Store, or eBay from verified sellers), or a local Suzuki specialist**. Ensure the part is new and in pristine condition to avoid premature failure.

Research **aftermarket bearings** that match the **dimensions and load capacity** of the OEM part. Look for brands with good reviews, such as **SKF, NTN, or JE**, and verify that they are designed for the TS185 engine. Ensure the bearing is **sealed, properly lubricated, and compatible** with your engine s oil specifications.

- Confirm the exact cause of the bearing failure (e.g., oil leaks, contamination, or wear). Addressing the root cause (e.g., sealing leaks, using the correct oil) will prevent future issues.

- Check for **counterfeit parts**, especially when buying online. Purchase from sellers with high ratings and clear return policies.

- If unsure about installation, consult a **mechanic** to ensure proper fitting and lubrication.

- Store the bearing properly (in a dry, dust-free environment) if you re not installing it immediately.

- Consider replacing the **oil pump seal, oil filter, and other related components** during the repair to ensure the engine runs smoothly afterward.

- If the crankshaft itself shows signs of wear (e.g., scoring, excessive play), replace it as well to avoid future bearing failures.

Ultimately, the **OEM bearing is the best choice for peace of mind**, while aftermarket options can be a cost-effective alternative if thoroughly vetted. Prioritize quality and compatibility over price to avoid costly mistakes.

Details:

We primarily use USPS and UPS as our shipping companies. MAY ALSO FIT: 1981. 1981 Suzuki TS185 gifts 185 Sierra crankshaft bearing stay.

part #: 1252128002 prices

• $10.00-$30.89

specifications instrumentcablecycleio:

• for models: Ts185, Sierra
• for makes: Suzuki
• for years: 1981
• mpn: 12521-28002
• part type: Bearing Crankshaft

seller instrumentcablecycleio:

• # reviews: 107990
• rating: 99.9%
• city: Spokane, Washington

returns instrumentcablecycleio:

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

shipping instrumentcablecycleio:

• transit: 4-7 Days
• type: Fixed
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage
• cost: $7.50

general instrumentcablecycleio:

• Motorcycle Scooter Parts Accessories > Instruments Gauges > Wiring Harnesses, Cables Connectors
• condition: Used

payments instrumentcablecycleio:

• other
• wallet: Google-pay
• credit card: Diners-club

offer instrumentcablecycleio:

• availability: In Stock
• started: March 28, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

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