fits model: Kz305, Kz, 305. make: Kawasaki. year: 1981-88.

( Manufacturer Part Number: 45014-1219 ), ( Part Type: Shock Suspension ), ( Vintage Part: Yes ), ( Country Of Origin: Japan )
The **Kawasaki KZ305 (part number 45014-1219)** from the 1981 to 1988 model years represents a critical yet often overlooked component for enthusiasts seeking to restore or enhance the performance and handling of their classic Kawasaki sport bikes. These **rear shocks (suspension absorbers)** are essential for maintaining optimal ride quality, stability, and control, particularly on the KZ305 a lightweight, high-revving machine known for its aggressive riding position and nimble handling. Originally designed to complement the bike s rigid frame and front forks, these shocks play a vital role in absorbing road imperfections, reducing fatigue during long rides, and ensuring precise wheel contact with the pavement. The **45014-1219** part number specifically refers to the **rear shock absorber assembly**, which includes the shock body, spring, damping components, and mounting hardware, all of which work in tandem to provide a balanced suspension setup. For riders who prioritize authenticity in their restorations, these OEM shocks offer a direct fit with minimal modifications required, preserving the original character of the KZ305 s suspension geometry. Meanwhile, for those pushing the limits of performance, upgrading to aftermarket alternatives can fine-tune damping characteristics, allowing for sharper cornering, improved traction, and a more engaging ride. Whether used in a full restoration or as part of a selective upgrade, these shocks are a foundational element for anyone aiming to recapture the KZ305 s legendary agility and responsiveness while ensuring a comfortable and controlled riding experience.
### **Pros and Cons of Buying a Kawasaki KZ305 (1981 1988) with Stock Rear Shock Suspension**
#### **Pros**
1. **Classic Nostalgia and Collectibility** The KZ305 is a well-regarded classic Japanese motorcycle, especially among enthusiasts who appreciate its design, simplicity, and historical significance. Owning one can be a rewarding experience for those who enjoy vintage machinery.
2. **Lightweight and Agile** The KZ305 is a relatively small, nimble bike (around 200 220 lbs dry), making it easy to handle, maneuver, and park. Its compact size also contributes to better fuel efficiency compared to larger modern bikes.
3. **Simple and Reliable Engine** The 296cc air-cooled single-cylinder engine is straightforward in design, with fewer components than modern multi-cylinder setups. This can make maintenance and repairs more accessible for those with mechanical skills. Many KZ305s run reliably with basic upkeep.
4. **Affordable to Purchase and Maintain** Compared to modern sportbikes or even newer classics, the KZ305 is often inexpensive to buy (especially in used condition). Parts like tires, brakes, and basic components are also reasonably priced. Labor costs for repairs are typically low.
5. **Great for Learning or Casual Riding** The bike s lightweight nature and manageable power (around 20 25 hp) make it suitable for beginners or riders who prefer a relaxed, low-speed experience. It s ideal for commuting, weekend rides, or track days for those who enjoy the simplicity of a single-cylinder.
6. **Modification Potential** While the stock suspension is basic, the KZ305 has a strong aftermarket support system. Upgrading the rear shock (e.g., to a modern unit like a Pro Circuit or hlins) is relatively straightforward and can significantly improve comfort and performance.
7. **Fuel Efficiency** The small engine consumes fuel sparingly, often achieving 100 miles per gallon in city riding. This makes it cost-effective for short trips or daily use.
8. **Minimalist Riding Experience** For those who prefer a no-frills, uncluttered ride, the KZ305 delivers. There s no complex electronics, minimal weight, and a direct connection to the road.
---
#### **Cons**
1. **Outdated and Basic Suspension** The stock rear shock (and often the front forks) is a simple coil-over design with limited adjustability. It lacks modern damping technology, which can lead to a harsh ride on rough roads or at higher speeds. The suspension may feel stiff, leading to fatigue over long rides.
2. **Poor High-Speed Stability** The KZ305 s lightweight frame and single-cylinder engine make it prone to wandering at higher speeds, especially in crosswinds. Modern riders accustomed to more stable bikes may find it unsettling on highways.
3. **Weak Braking System** The stock drum brakes (on early models) or early disc brakes (on later models) are inadequate for modern safety standards. Upgrading to better brakes (e.g., aftermarket discs and pads) is often necessary for safe stopping power.
4. **Limited Power Delivery** While the engine is reliable, it lacks the torque and power of modern bikes. Acceleration is linear but sluggish compared to contemporary standards, which may frustrate riders expecting more performance.
5. **Vulnerability to Weather and Road Conditions** The lack of advanced suspension tuning means the KZ305 can feel uncomfortable on rough pavement, potholes, or uneven surfaces. It s not ideal for long-distance touring without modifications.
6. **Rust and Maintenance Issues** Many older KZ305s suffer from rust, especially in the frame, swingarm, and suspension components. The bike may require significant restoration work to bring it to a rideable condition. Neglecting maintenance can lead to costly repairs.
7. **Limited Comfort for Long Rides** The ergonomics are basic, with a low seat height and minimal wind protection. Riders over 6 feet tall may find the seating position uncomfortable for extended trips.
8. **Resale Value and Insurance Costs** Classic bikes like the KZ305 hold sentimental value but may not retain high resale worth compared to modern or highly sought-after classics. Insurance can also be more expensive due to its age and lack of modern safety features.
9. **Lack of Modern Conveniences** There s no ABS, traction control, or advanced instrumentation. Fuel gauges are often unreliable, and the bike lacks features like digital speedometers or Bluetooth connectivity.
10. **Track Limitations** While the KZ305 can handle light track use, its suspension and braking are not optimized for high-performance riding. Modern track bikes offer superior grip, stability, and durability.
---
### **Conclusion**
The Kawasaki KZ305 (1981 1988) with stock rear suspension is a **fantastic choice for enthusiasts who prioritize nostalgia, simplicity, and affordability** over modern performance and comfort. It s ideal for riders who enjoy the challenge of maintaining a classic bike, appreciate its lightweight agility, or seek a low-cost entry into motorcycle ownership. The stock suspension is a clear weakness, but it s easily upgradeable, making the bike more versatile for those willing to invest in improvements.
However, if you re looking for a **comfortable, stable, or high-performance** ride especially for long distances or highway use the KZ305 s limitations may outweigh its charm. It s not a practical daily rider for everyone, nor is it suitable for riders who demand modern safety or convenience features.
### **Recommendation**
- **Buy it if:** You love classic bikes, enjoy tinkering with mechanics, want a lightweight commuter or weekend project, or are drawn to its historical significance. Upgrading the rear shock (and ideally the front forks) will greatly improve its ride quality.
- **Avoid it if:** You prioritize comfort, stability, or modern performance; plan to ride long distances frequently; or need reliable braking and suspension for safety.
- **Best for:** Riders who appreciate simplicity, are okay with basic maintenance, and don t mind sacrificing some modern conveniences for character and affordability. It s also a great bike for beginners who want to learn motorcycle mechanics hands-on.
For those who decide to purchase one, **budget for suspension upgrades, brake improvements, and potential rust repairs** to make it a more enjoyable and safe ride. If you re unsure, consider borrowing or renting one first to experience its strengths and weaknesses before committing.
CAME OFF A 1982 KAWASAKI KZ350 Build date of 10/81 FRAME #KAKZLB17CA002911 ENGINE #KZ305AE-016119 SEE PICTURES FOR CONDITION AND WHATS INCLUDED. FITMENT: KZ305-A1 CSR 1981 KZ305-A2 1982 KZ305-B1 Belt KZ305-B2 LTD 1987 KZ305-B3 1988 1981.