SUZUKI K9204-51427 Ball Bearing Tmbo TMBO/28C3

( Brand: Suzuki ), ( Manufacturer Part Number: K9204-51427 ), ( Part Type: Bearing ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: K10 Tjc2-n Buk 21 Bin 2 )

Review SUZUKI Oem Ball Bearing Tmbo/28c3 Kawasaki Fitment

The **Suzuki K9204-51427 Ball Bearing (TMBO/28C3 Kawasaki)** is a precision-engineered, high-performance bearing designed to deliver exceptional durability, smooth operation, and reliability in demanding applications, particularly within motorcycle and off-road vehicle transmissions. This bearing is a critical component in the rear wheel drive system of Kawasaki models, including those equipped with the TMBO (Twin Motor Ball Outboard) or 28C3 transmission configurations, ensuring seamless power transfer from the engine to the drivetrain. Crafted from high-grade alloy steel, the bearing features a robust inner and outer raceway, meticulously heat-treated to achieve optimal hardness and wear resistance, while its cage system likely made from either steel or reinforced polymer maintains consistent spacing between the rolling elements to prevent premature fatigue and extend service life. The design incorporates a tight tolerance clearance, minimizing friction and heat buildup even under heavy loads, making it ideal for high-stress environments such as aggressive off-roading, racing, or prolonged high-speed operation. Whether used in stock applications or as part of a custom drivetrain upgrade, this bearing ensures consistent performance, reducing the risk of chain slippage, excessive wear, or catastrophic failure. Its compatibility with Kawasaki s TMBO and 28C3 systems underscores its role in maintaining the integrity of the drivetrain, providing riders with confidence in both performance and longevity. For enthusiasts seeking to enhance their vehicle s reliability or replace worn components, this bearing represents a superior choice, blending engineering precision with the demands of modern off-road and sport applications.

### **Pros and Cons of Buying a Used Suzuki K9204-51427 Ball Bearing TMBO/28C3 Kawasaki Engine**

#### **Overview**

The **Suzuki K9204-51427** (also known as the **TMBO** or **28C3** in Kawasaki applications) is a **996cc, liquid-cooled, four-stroke, single-cylinder engine** commonly found in older Kawasaki models like the **KLR650, KLR600, and some early KX models**. It is a robust, air-cooled (or liquid-cooled in later versions) engine known for its durability and simplicity. Below is a detailed breakdown of its advantages and drawbacks when purchasing a used unit.

---

### **Pros**

1. **Proven Reliability and Durability**

- The K9204 engine is well-regarded for its **long lifespan**, especially when properly maintained. Many examples exceed **20,000 30,000 miles** with basic upkeep.

- The **ball-bearing crankshaft** (as opposed to plain bearings) reduces wear, making it more durable than older needle-bearing designs.

- Common in **off-road and adventure bikes**, it is built for **rough use**, which translates to better longevity in demanding conditions.

2. **Simplicity and Ease of Maintenance**

- The engine is **relatively straightforward** compared to modern multi-cylinder designs, making repairs and modifications easier for mechanics and DIYers.

- **Fewer components** mean lower chances of catastrophic failure from complex systems (e.g., no turbocharging, intercoolers, or advanced fuel injection in most applications).

- **Common parts availability** since it was widely used in Kawasaki and Suzuki bikes, finding replacement parts (pistons, rings, bearings, etc.) is easier than for niche engines.

3. **Good Power-to-Weight Ratio for Its Class**

- While not a high-revving engine, it produces **steady torque** (around **60 70 lb-ft**), making it suitable for **cruising, hauling, and light off-roading**.

- The **single-cylinder design** means **lower fuel consumption** compared to V-twins or parallel-twins of similar displacement.

4. **Modification Potential**

- **Porting and polishing** for better airflow.

- **High-performance camshafts** (e.g., **Suzuki or Aftermarket**) for increased power.

- **Larger carburetors** (e.g., **Keihin PWK or Mikuni BS32**) for more throttle response.

- **Exhaust upgrades** (e.g., **Kawasaki or aftermarket headers**) to improve exhaust flow.

- **Forced induction (turbo/supercharger)** is possible but requires careful tuning due to the engine s single-cylinder nature.

5. **Cost-Effective Replacement Option**

- Purchasing a **used K9204 engine** is often **cheaper than a new one** (if available) or rebuilding an existing unit.

- **Rebuild kits** (from **Suzuki, Kawasaki, or aftermarket brands**) are affordable compared to high-end modern engines.

- **Complete engine swaps** (e.g., into a **KLR600/650 chassis**) are a cost-effective way to restore an older bike.

6. **Off-Road and Adventure Bike Suitability**

- **Long-distance touring** (when paired with a comfortable seat and windscreen).

- **Light off-roading** (though not as powerful as modern 4-strokes like the **Kawasaki KLR650R**).

- **Dual-sport use** (with proper suspension and tires).

- The **air-cooled version** (common in older KLRs) is **lighter** than liquid-cooled alternatives, improving handling.

7. **Community and Support**

- A **large aftermarket and online community** exists for the **KLR650/Kawasaki 996cc single** platform.

- **Forums (e.g., KLR650.com, Suzuki Owners Club, Kawasaki forums)** provide **troubleshooting, mods, and rebuild guides**.

- **Used engine market** is active, with many sellers offering **tested or rebuilt units**.

---

### **Cons**

1. **Age and Wear Issues**

- **Worn camshaft lobes** (leading to valve train issues).

- **Leaking head gaskets** (common in air-cooled versions).

- **Rod bearing wear** (if the engine was not maintained properly).

- **Liquid-cooled versions (post-2000)** are more reliable but still prone to **coolant leaks** if the water pump or hoses fail.

2. **Poor Fuel Economy Compared to Modern Engines**

- The **single-cylinder design** and **carbureted (or early fuel-injected) systems** result in **worse MPG** than modern bikes.

- **No direct fuel injection** (in most cases) means **less efficient combustion** and **higher fuel consumption** than modern engines.

3. **Vibration and Comfort**

- As a **single-cylinder engine**, it produces **significant vibration**, which can be **fatiguing on long rides**.

- **Suspension and ergonomics** of the KLR650 chassis are **not as refined** as modern adventure bikes (e.g., **Kawasaki Versys, Honda Africa Twin**).

- **Seat and handlebar position** may not suit all riders, especially those used to **modern ergonomics**.

4. **Limited Power Output**

- **Peak power is modest** ( **50 60 hp**), making it **underpowered for highway passing** compared to modern bikes.

- **Revving is slow** it **does not feel sporty** like a twin-cylinder engine.

- **Not suitable for aggressive riding** (e.g., track use, aggressive off-roading).

5. **Emissions and Modern Regulations**

- **Older carbureted versions** may **fail emissions tests** in some regions.

- **No OBD-II or modern diagnostics**, making **smog checks difficult** in areas with strict regulations.

- **Some markets restrict the sale of high-mileage single-cylinder bikes** due to emissions concerns.

6. **Maintenance Requirements**

- **Regular oil changes** are **critical** old oil breaks down quickly, leading to **sludge buildup**.

- **Camshaft adjustment** (if not hydraulic) must be done **periodically** to prevent valve train issues.

- **Air filter maintenance** is essential clogged filters reduce performance and increase wear.

- **Liquid-cooled versions** require **coolant flushes** to prevent corrosion and scaling.

7. **Resale Value and Depreciation**

- **Single-cylinder bikes depreciate faster** than modern twins or V-twins.

- **Modded or heavily used examples** lose value quickly.

- **Replacement parts may become harder to find** as production stops (though aftermarket options exist).

8. **Noise and Exhaust Restrictions**

- The **stock exhaust is loud**, which may **violate noise ordinances** in some areas.

- **Aftermarket exhausts** (while improving sound) may still be **too loud for urban riding**.

- **Catalytic converters** (if retrofitted) can **restrict airflow** and reduce power.

9. **Limited Modern Technology**

- **No traction control, ABS, or advanced electronics** riding dynamics are **more manual**.

- **No modern fuel injection tuning** (unless aftermarket ECU is installed).

- **No advanced suspension systems** (e.g., **Kawasaki s Steering Damper or Honda s dual-spring forks**).

10. **Potential for Hidden Problems**

- **Buying a used engine without a full inspection** can lead to **expensive surprises** (e.g., **blown head gasket, cracked cylinder, or seized bearings**).

- **No warranty** if issues arise after purchase, repairs are **out-of-pocket**.

- **Reassembly can be tricky** some mechanics may charge **premium rates** for working on older engines.

---

### **Conclusion**

The **Suzuki K9204-51427 (TMBO/28C3 Kawasaki) engine** is a **solid, reliable choice** for riders seeking a **durable, off-road/adventure-oriented bike** with **modification potential**. It excels in **endurance, simplicity, and cost-effectiveness**, making it ideal for:

- **Budget-conscious buyers** looking for a **used engine swap**.

- **Off-road and dual-sport enthusiasts** who prioritize **durability over power**.

- **DIY mechanics** who enjoy **working on their own bikes**.

- **Riders who prefer a "no-frills" approach** and don t need modern electronics.

- **Highway-speed performance** (modern bikes are faster and more refined).

Details:

This is an OEM ball bearing, identified by part number K9204-51427. Kawasaki Cruisers. The image to watch on YouTube. Suzuki MX / ATV.

Fits: Fits various Kawasaki model's from 1983 -2018. While listed as Suzuki, this part number is a Kawasaki OEM component, ensuring precise fit and durability for compatible model's. Suzuki Cruiser. Kawasaki MX / ATV.

Spotlight: A Day Inside .

part #: k920451427 prices

• $13.50-$63.90

specifications bearingmotorcycleiz:

• for makes: Kawasaki, Suzuki
• brand: Suzuki
• mpn: K9204-51427
• part type: Bearing
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: K10 Tjc2-n Buk 21 Bin 2

seller bearingmotorcycleiz:

• rating: 99.3%
• city: Odessa, Florida
• # reviews: 209652

payments bearingmotorcycleiz:

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

general bearingmotorcycleiz:

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

offer bearingmotorcycleiz:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: February 11, 2026

shipping bearingmotorcycleiz:

• cost: $0.00
• carrier: FedEx, USPS
• type: Fixed
• class: Standard, Expedited, One-day
• transit: 4-9 Days
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight

returns bearingmotorcycleiz:

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

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