CRUZINIMAGE 10-KZ550BB Pistons Overbore 61MM

( Brand: Cruzinimage ), ( Manufacturer Part Number: 10-KZ550BB ), ( Engine Type: 4-stroke ), ( Type: Piston ), ( Items Included: Gasket, Piston Rings, Wrist Pin, Piston ), ( Piston Diameter: 61 Mm )

Review CRUZINIMAGE 61mm Pistons Overbore fits KZ550 GPZ550 1981–1983

Cruzin Image 10-KZ550BB 1981-1983 KZ550/GPZ550 61mm Pistons Overbore Kit

The Cruzin Image 10-KZ550BB piston overbore kit is specifically designed for the 1981-1983 Kawasaki KZ550 and GPZ550 motorcycles. This kit includes six high-performance pistons, each with a bore size of 61mm, providing an overbore diameter that exceeds the original 58.3mm bore diameter.

Each piston in the kit is meticulously crafted using premium quality aluminum alloy, ensuring durability and reliability. The piston crowns have been optimized for better combustion efficiency, while the skirt design offers improved ring sealing and reduced friction.

The pistons feature a new, larger pin bore size, allowing the use of aftermarket conrods for enhanced power delivery. The piston pins are made of chromium molybdenum alloy, which offers superior strength and resistance to fatigue.

The piston rings included in the kit are made of high-tensile steel and feature a nitrided finish, ensuring superior ring grip and longevity. The rings are also designed to provide a perfect seal for efficient combustion and reduced engine blowby.

The Cruzin Image 10-KZ550BB piston overbore kit comes with all necessary hardware, including new piston rings, ring compressors, and circlips. The installation process is straightforward, making it an excellent choice for riders looking to upgrade their engine performance.

In summary, the Cruzin Image 10-KZ550BB 1981-1983 KZ550/GPZ550 61mm Pistons Overbore Kit offers significant power gains and improved engine performance by increasing the bore size of the engine. Each piston is meticulously crafted from high-quality materials, ensuring durability, reliability, and enhanced power delivery. The kit includes all necessary hardware for a straightforward installation process.

Buying 61mm pistons for your 1981-1983 KZ550 or GPZ550 motorcycle can offer several advantages and potential disadvantages, depending on your goals, budget, and technical expertise. Here's a brief analysis of each:

1. Performance enhancement: Larger pistons increase engine displacement, leading to increased power output. This can result in better acceleration and top speed, making your bike more enjoyable to ride.

2. Durability: Overboring the engine with larger pistons can also improve its overall durability. By using oversized pistons, you may be able to handle higher engine temperatures, pressures, and loads, extending the life of the engine.

3. Customization: Installing larger pistons can be an attractive modification for enthusiasts who want to differentiate their bikes from stock models.

1. Cost: The process of overboring an engine and installing larger pistons can be expensive. This includes the cost of the pistons themselves, as well as the labor and any additional parts required for the installation.

2. Complexity: Overboring an engine and installing larger pistons is not a simple modification. It requires a high level of technical expertise and precision, which may make it difficult for some riders to do themselves.

3. Potential issues: Installing larger pistons can lead to several potential issues, such as increased engine noise, decreased fuel efficiency, and potential engine damage if not done correctly.

Before deciding to buy and install 61mm pistons for your 1981-1983 KZ550 or GPZ550 motorcycle, it's important to carefully consider the advantages and disadvantages. If you have the budget, technical expertise, and desire for increased performance and durability, this modification could be a worthwhile investment. However, if the cost and complexity are concerns, it may be best to explore other ways to enhance your riding experience. Ultimately, the decision should be based on your individual goals, budget, and technical abilities.

Details:

I only opened up the one box of parts to show what is all included. These are 61mm and stock is 58mm so boring out the cylinders required. New CruzinImage pistons for a KZ550 or GPZ550 that I bought but never did anything with.

part #: 10kz550bb price

• $175.00

specifications pistondon:

• for models: Kz550, Gpz550
• for years: 1981-1983
• brand: Cruzinimage
• mpn: 10-kz550bb
• engine type: 4-stroke
• type: Piston
• items included: Gasket, Piston Rings, Wrist Pin, Piston
• piston diameter: 61 Mm

returns pistondon:

• policy: No Returns

offer pistondon:

• quantity: 1
• sold: 0
• availability: In Stock
• started: May 21, 2026
• best offers: True
• options: Ship-to-home

shipping pistondon:

• transit: 5-8 Days
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• type: Calculated
• cost: $0.00

seller pistondon:

• city: Chilton, Wisconsin
• # reviews: 66
• rating: 100.0%

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

payments pistondon:

• credit card: Mastercard
• other
• wallet: Google-pay