HONDA 43530-410-305 Nos Rear Master Kit

( Manufacturer Part Number: 43530-410-305 ), ( Vintage Part: Yes ), ( Materials Sourced From: Japan ), ( Compatible Year: 1978, 1977 )

Review HONDA Nos Oem Rear Master Cyl Kit fits CB750F GL1000 1977-78–1978-79

The **Honda 43530-410-305 NOS (New Old Stock) Rear Master Kit** is a meticulously preserved, high-quality aftermarket component designed to restore or upgrade the rear master cylinder assembly on select 1977-1978 **CB750F** and 1978-1979 **GL1000** motorcycles. This kit represents a rare and sought-after piece for enthusiasts seeking authenticity and reliability in their classic Honda builds, as it originates from a period when Honda s engineering precision was at its peak. The rear master cylinder is a critical component of the braking system, responsible for transferring hydraulic pressure from the brake lever to the rear wheel caliper, ensuring consistent and responsive stopping power. Crafted from durable, corrosion-resistant materials, this NOS unit retains its original factory finish, complete with the iconic Honda branding and stamping, making it a perfect fit for restorers aiming to maintain the motorcycle s historical integrity. The kit includes all necessary hardware, such as the master cylinder body, gasket, and mounting bracket, ensuring a seamless installation process. Whether you re reviving a neglected classic or enhancing the performance of a well-maintained machine, this NOS rear master kit delivers the reliability and performance expected from Honda s legendary engineering straight from the past, ready to serve again.

### **Pros and Cons of Buying a NOS (No-Order-Number) 1977-78 Honda CB750F or 1978-79 GL1000 Rear Master Kit**

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### **Overview of the Parts**

The **Honda 43530-410-305** refers to a **rear master cylinder kit** for the **CB750F (1977-78)** and **GL1000 (1978-79)**. These bikes share the same rear brake master cylinder design, making this a universal fit for both models. The "NOS" (No-Order-Number) designation means the part is either:

- **Original, unused, and in excellent condition** (rare and highly desirable).

- **A high-quality aftermarket replica** (if not genuine Honda).

- **A used part with no service history** (if not NOS in the strictest sense).

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### **Pros of Buying a NOS Rear Master Cylinder Kit**

1. **Reliability and Durability**

- Honda s early 1970s brake systems were robust, and NOS parts are built to the same high standards as original equipment. They are less likely to fail prematurely compared to aftermarket or heavily used parts.

- The master cylinder is a critical component for brake function; a NOS part ensures consistent performance without the risk of leaks or sponginess that can develop in older parts.

2. **Authentic Fit and Function**

- A genuine NOS part will match the original specifications exactly, including tolerances, materials, and compatibility with the bike s hydraulic system. This reduces the risk of brake fluid leaks or improper operation.

- Aftermarket replicas may not always fit perfectly, leading to potential issues like brake drag or inconsistent pedal feel.

3. **Historical and Collectible Value**

- For enthusiasts restoring or preserving a classic Honda, NOS parts are highly prized. They maintain the bike s original integrity and are often sought after in the vintage motorcycle market.

- If the bike is intended for show or concours, NOS parts are a must to avoid "modernized" components that detract from authenticity.

4. **Long-Term Cost Savings**

- While NOS parts are more expensive upfront, they are less likely to require frequent replacement. This can save money over time compared to cheaper, lower-quality alternatives that may fail sooner.

- Avoiding brake-related issues also reduces the risk of accidents, which could be costly in terms of repairs or medical expenses.

5. **Peace of Mind**

- Knowing the part is original and unused provides confidence in the bike s safety and performance. Brake systems are critical for rider safety, and a NOS master cylinder ensures reliability.

- Many vintage motorcycle owners prefer NOS parts to avoid the uncertainty of used or aftermarket components, especially for high-mileage bikes.

6. **Compatibility with Original Components**

- The rear master cylinder integrates with the bike s original brake lines, calipers, and reservoir. A NOS part ensures seamless compatibility, whereas aftermarket parts might require modifications or additional fittings.

7. **Resale Value**

- If the bike is ever sold, having NOS parts can increase its value, especially in the classic motorcycle market. Buyers often pay a premium for bikes with complete original or NOS components.

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### **Cons of Buying a NOS Rear Master Cylinder Kit**

1. **High Cost**

- NOS parts are significantly more expensive than aftermarket or used alternatives. For a rare or discontinued part like this, prices can be prohibitive, especially if the seller is charging a premium for its condition or rarity.

- The cost may not be justified if the bike is primarily used for daily riding rather than preservation or competition.

2. **Limited Availability**

- NOS parts for older Hondas are becoming increasingly scarce. The supply is dwindling as original stock is depleted, and finding a genuine NOS part may require extensive searching through specialty dealers, auctions, or private sellers.

- This scarcity can lead to bidding wars or inflated prices, making it difficult to acquire without overspending.

3. **Potential for Counterfeit or Replica Parts**

- Not all "NOS" parts are genuine. Some sellers may market aftermarket replicas as NOS to take advantage of the premium price. It s crucial to verify the part s authenticity through the seller s reputation, documentation, or third-party inspection.

- Counterfeit NOS parts may not perform as well as originals and could void any warranty or resale value benefits.

4. **Storage and Handling Risks**

- NOS parts are often stored in less-than-ideal conditions (e.g., garages, attics) by collectors or dealers. Even if the part is unused, exposure to moisture, dust, or temperature fluctuations can degrade rubber seals or metal components.

- Always inspect the part for signs of wear, corrosion, or contamination before purchasing.

5. **Overkill for Practical Use**

- If the bike is used for casual riding or not restored to show condition, the expense of NOS parts may not be necessary. Modern brake systems (e.g., disc brakes, better fluid) have improved significantly since the 1970s, and aftermarket parts can offer comparable performance at a fraction of the cost.

- For high-mileage bikes, a NOS part may not be worth the investment if the original part is still functional (though this is rare for a master cylinder).

6. **Time-Consuming to Source**

- Finding a NOS part requires patience and research. Buyers may need to contact multiple sellers, attend auctions, or wait for parts to become available, which can delay projects.

- Shipping risks are also a concern, as NOS parts are fragile and may be damaged in transit.

7. **Maintenance and Upkeep Costs**

- While NOS parts are durable, they still require proper maintenance (e.g., regular brake fluid flushes, inspection for leaks). Neglecting maintenance can lead to issues even with original components.

- Some riders may prefer upgrading to modern brake systems (e.g., larger calipers, better fluid) for improved stopping power, which could render the NOS part obsolete.

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### **Conclusion**

- The bike is a **restoration or concours project** where authenticity is paramount.

- The buyer is **willing to invest in long-term reliability and resale value**.

- The part is **verified as genuine NOS** to avoid counterfeit replicas.

- The bike s **primary use is preservation or display**, not daily high-mileage riding.

- The bike is used for **casual or daily riding** and aftermarket parts would suffice.

- The buyer is **unable or unwilling to pay the premium price** for NOS components.

- The original part is **still functional**, and the risk of failure is low.

- The buyer prioritizes **modern performance upgrades** over historical accuracy.

---

### **Recommendation**

1. **Verify Authenticity First**

- Confirm the part is **genuine NOS** by checking with Honda parts specialists, vintage motorcycle forums, or trusted dealers. Ask for proof of origin (e.g., original packaging, service records).

- If purchasing from a private seller, inspect the part in person or have it inspected by a mechanic before finalizing the purchase.

2. **Assess the Bike s Purpose**

- If the bike is a **project or collector s item**, NOS parts are worth the investment.

- If the bike is a **daily rider**, consider whether the cost is justified compared to aftermarket alternatives (e.g., **Hifly, Akebono, or other high-quality brake kits**).

3. **Budget Accordingly**

- NOS parts are an **expensive but worthwhile** choice for enthusiasts. If the budget is tight, prioritize other critical components (e.g., engine rebuild, suspension) and use aftermarket brake parts for the master cylinder.

4. **Consider Alternatives**

- If a NOS part is unavailable, explore **high-quality aftermarket replicas** (e.g., **Honda Performance Parts, Speedhawk, or specialized vintage brake manufacturers**).

- For brake upgrades, modern **disc brake conversions** (e.g., **Brembo, EBC, or custom builds**) can significantly improve stopping power while maintaining compatibility.

5. **Maintain Properly**

- Regardless of whether you choose NOS or aftermarket, **regular brake maintenance** (fluid flushes, bleeds, inspections) is essential for safety. Follow Honda s service intervals or consult a vintage motorcycle specialist.

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### **Final Verdict**

For **restoration purists, collectors, or those prioritizing authenticity**, the **NOS rear master cylinder kit is an excellent investment**. It ensures reliability, historical accuracy, and long-term value. However, for **practical riders or those on a budget**, aftermarket alternatives may offer a more cost-effective solution without sacrificing performance.

Always weigh the **cost, purpose of the bike, and availability** before committing to a NOS part. If you re serious about the purchase, **buy from a reputable source and verify the part s condition** to avoid disappointment.

Details:

NOS HONDA OEM 1977-78 CB750F 1978-79 GL1000 REAR MASTER CYL KIT 43530-410-305.

part #: 43530410305 prices

• $32.89-$39.99

specifications cyclevintagee:

• for models: Cb750f, Gl1000
• for makes: Honda
• for years: 1977-78-1978-79
• mpn: 43530-410-305
• vintage part: Yes
• materials sourced from: Japan
• compatible year: 1978, 1977

offer cyclevintagee:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• started: April 7, 2026

shipping cyclevintagee:

• cost: $7.52
• type: Calculated
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage
• transit: 4-10 Days

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

payments cyclevintagee:

• wallet: Paypal
• credit card: Diners-club
• other

seller cyclevintagee:

• city: Coldwater, Michigan
• # reviews: 57
• rating: 100.0%

returns cyclevintagee:

• policy: No Returns

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