KAWASAKI H2E12852 Triple Bottom End

( Manufacturer Part Number: H2E12852 ), ( Compatible Model: H2 750 ), ( Vintage Part: Yes ), ( Compatible Year: 1974, 1973, 1972 )

Review KAWASAKI Triple Complete Bottom End fits H2 750 1974

The **Kawasaki H2E12852 1974 H2 750 Triple** is a legendary piece of motorcycle engineering, embodying the raw power and uncompromising spirit of the golden era of Japanese sportbikes. Built in the late 1960s and early 1970s, this iconic machine was Kawasaki s first true high-performance road racer, designed to challenge the dominance of European brands like BSA and Norton while pushing the boundaries of what a production motorcycle could achieve. The **H2 750 Triple** stands out not just for its striking design but for its groundbreaking engineering, which included a triple overhead camshaft (OHC) engine a radical departure from the conventional single or twin-cam layouts of the time. This configuration delivered an unprecedented blend of high-revving enthusiasm and mid-range torque, making it a force to be reckoned with on both the track and the open road.

Under the sleek, angular fairings and polished chrome details lies one of the most advanced engines of its era. The **748cc triple-cylinder inline layout** (with a 75-degree bank angle) was a bold innovation, offering a smooth yet aggressive power delivery that was both thrilling and practical. The engine s triple OHC setup, paired with a dry-sump lubrication system and a lightweight aluminum crankcase, allowed for a high-revving, peaky performance that could reach well beyond 10,000 RPM a staggering figure for a production bike in 1974. The triple carburetion, typically featuring three Mikuni or Dell Orto units, ensured a rich, responsive throttle response, while the bike s lightweight construction (thanks to its magnesium wheels and fiberglass bodywork) contributed to an agile, nimble handling experience that was ahead of its time.

The **H2 750 Triple** was not just a performance machine; it was a statement of intent. Its aggressive, angular styling with its sharp headlamp cluster, exposed valve covers, and distinctive triple exhaust pipes made it instantly recognizable and a symbol of Kawasaki s ambition to compete with the best. The bike s frame was a steel double-cradle design, reinforced with a de Dion rear suspension system, which provided a balance of rigidity and compliance, allowing for precise cornering and a comfortable ride. The telescopic front forks and a dual-shock rear suspension ensured that the bike could handle both the track s demands and the demands of long-distance touring, though its true calling was undoubtedly on the racetrack.

Restoration and maintenance of a **1974 Kawasaki H2 750 Triple** require both skill and dedication, as these bikes are often found in varying states of preservation. Original examples may still carry their period-correct components, including the iconic **H2E12852 engine number**, which is a mark of authenticity for collectors. However, many enthusiasts opt for a blend of original and modern upgrades, such as performance camshafts, high-flow exhaust systems, or modern fuel injection, to enhance reliability and power while preserving the bike s classic aesthetic. The **bottom end** of the engine comprising the crankshaft, connecting rods, and pistons is particularly critical, as it must withstand the extreme stresses of high RPM operation. Many restored H2s feature upgraded bottom ends with forged components or reinforced internals to ensure longevity and performance.

Beyond its mechanical brilliance, the **Kawasaki H2 750 Triple** holds a special place in motorcycle history as a pioneer. It was one of the first Japanese bikes to seriously challenge the European dominance in high-performance motorcycling, proving that Asian manufacturers could deliver not just reliability but also raw, exhilarating power. Today, it remains a sought-after collector s item, prized by enthusiasts for its rarity, innovation, and timeless design. Whether ridden on a weekend track day or displayed as a centerpiece in a museum, the **H2 750 Triple** is more than just a motorcycle it is a testament to an era when engineering boundaries were pushed, and where the spirit of competition drove innovation to new heights.

### **Pros and Cons of Buying a 1974 Kawasaki H2 750 Triple (Bottom End: H2E12852)**

#### **Pros**

1. **Classic Design and Prestige**

The H2 750 is one of the most iconic and desirable motorcycles of the 1970s, known for its aggressive, angular styling and racing heritage. Owning one carries significant cultural and collector value, appealing to enthusiasts who appreciate vintage Japanese motorcycles.

2. **Strong Engine Potential**

The H2 s 748cc triple-cylinder engine is a legendary powerplant when properly maintained. With the correct bottom end (H2E12852), it can produce impressive performance for its era, especially when paired with modern upgrades like a high-flow exhaust, performance carburetors, or even a fuel injection conversion.

3. **Reliability with Proper Care**

Unlike some early Japanese bikes, the H2 was built with durability in mind. The triple-cylinder design is inherently balanced, reducing vibration compared to single-cylinder or twin-cylinder bikes of the same era. With regular maintenance, a well-kept H2 can run reliably for decades.

4. **Modding and Customization Opportunities**

The H2 has a thriving aftermarket, with parts available for restoration, performance tuning, and aesthetic modifications. From classic chrome restorations to modern performance builds, there are endless ways to personalize the bike.

5. **Historical Significance**

The H2 was a pioneer in Japanese motorcycle engineering, competing directly with British and American bikes in the 1970s. Owning one connects you to a pivotal moment in motorcycle history.

6. **Potential for High Resale Value**

As a rare and sought-after classic, a well-preserved H2 can appreciate in value over time, especially if it remains in original condition or is restored to showroom quality.

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#### **Cons**

1. **High Maintenance Requirements**

The H2 is not a "set it and forget it" bike. It requires meticulous maintenance, including regular valve adjustments, carburetor tuning, and chain/gear inspections. Neglect can lead to costly repairs, particularly with aging components like the clutch, transmission, and suspension.

2. **Parts Availability and Cost**

While some parts are still available through specialty suppliers, others (especially original components) can be difficult or expensive to source. Rebuilding the engine or transmission may require sourcing vintage or aftermarket parts, increasing costs.

3. **Rust and Corrosion Risks**

Many H2s from the 1970s suffered from rust, particularly in the frame, fuel tank, and suspension components. A thorough inspection is essential to avoid purchasing a bike with structural issues that could compromise safety.

4. **Performance Limitations**

Compared to modern motorcycles, the H2 is underpowered by today s standards. Even with modifications, it will never match the speed, comfort, or handling of a contemporary bike. It s best suited for enthusiasts who prioritize nostalgia and character over raw performance.

5. **High Cost of Restoration**

Restoring an H2 to original or near-original condition can be prohibitively expensive. Labor costs for specialized work (e.g., frame welding, engine rebuilding) can add up quickly, and some owners opt to modify rather than restore.

6. **Riding Experience Trade-offs**

The H2 is heavy, top-heavy, and lacks modern ergonomics. Its suspension is basic by today s standards, and the riding position is aggressive, which may not suit all riders. It s not ideal for long-distance touring or casual riding it s a bike for enthusiasts who enjoy the challenge.

7. **Legal and Insurance Challenges**

Some insurance companies may charge higher premiums for classic bikes, and registration or emissions requirements (in certain regions) could complicate ownership. Additionally, the bike may not meet modern safety standards for street use in some areas.

8. **Market Saturation and Competition**

The H2 is highly collectible, meaning competition for well-preserved examples is fierce. Buyers may need to spend significantly more to acquire a bike in good condition, or they may have to settle for a project bike that requires extensive work.

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### **Conclusion and Recommendation**

The **1974 Kawasaki H2 750 Triple (H2E12852 bottom end)** is a remarkable motorcycle for the right owner someone who appreciates its historical significance, iconic design, and potential for mechanical satisfaction. It is not, however, a practical choice for casual riders or those seeking a modern, low-maintenance machine.

#### **Who Should Buy It?**

- **Enthusiasts who prioritize nostalgia and craftsmanship** over convenience.

- **Riders willing to invest time and money in maintenance or restoration.**

- **Collectors or those who see the bike as a long-term project or investment.**

- **Owners who enjoy the challenge of tuning and modifying a classic engine.**

#### **Who Should Avoid It?**

- **Beginners or riders without mechanical experience.**

- **Those who want a bike for daily commuting or long-distance riding.**

- **Buyers who expect modern comfort, safety, or performance.**

- **People unwilling to spend significant money on parts, labor, or storage.**

If you are **passionate about vintage motorcycles, have the skills (or access to skilled mechanics) to maintain it, and can afford the costs associated with ownership**, the H2 750 is an extraordinary purchase that will bring immense satisfaction. However, if you are looking for a straightforward, reliable, or high-performance bike, there are far better alternatives available today.

**For the right buyer, the H2 is a dream machine but it demands respect, patience, and dedication.** Always inspect the bike thoroughly (including the bottom end, frame, and suspension) before purchasing, and consider consulting a Kawasaki specialist or restorer to assess its condition.

Details:

NO: JUGS-PISTONS-RINGS-HEADS-RISH-PINS- CARBS ETC add all these parts and engine should startup run as it was before were removed put on my Drag bike pictured. I can take Cashiers Check Personal Check-and Cash. UP FOR SELL, 1974 KAWASAKI H2 750 TRIPLE MACH IV COMPLETE BOTTOM END, This listing is for my spare Kawasaki Triple Complete Bottom end include good casting,good factory stock transmission,clutch assembly,original crank,rods sangers and seals,original CDI magnate 3 pickups rotor, Comes with original clutch housing cover,Oil dip stick,original Magnate cover,original tachometer cover, Original jug studs ,original Kick start rod rubber boot.

specifications cyclevintagee:

• for models: H2, 750
• for makes: Kawasaki
• mpn: H2e12852
• compatible model: H2 750
• vintage part: Yes
• compatible year: 1974, 1973, 1972

returns cyclevintagee:

• policy: No Returns

seller cyclevintagee:

• city: Homestead, Florida
• # reviews: 5
• rating: 85.7%

payments cyclevintagee:

• credit card: Discover
• wallet: Apple-pay
• other

offer cyclevintagee:

• started: April 29, 2026
• quantity: 1
• options: Seller-arranged-local-pickup
• sold: 0
• availability: In Stock

shipping cyclevintagee:

general cyclevintagee:

• condition: Used
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