fits model: Kz1000, Kz900, Z1r.

( Brand: Wiseco ), ( Manufacturer Part Number: P1425 ), ( Machine Type: Street Motorcycle, Dragbike ), ( Items Included: Piston Rings, Wrist Pin, Forged Pistons, Circlips, Copper Head Gasket ), ( Piston Diameter: 83.00mm ), ( Material: Aluminum Alloy, Steel, Forged Aluminum, Copper ), ( Engine Type: 4-stroke ), ( Type: Piston Kit ), ( Manufacturer Warranty: 1 Month ), ( Cylinder Bore Diameter: 3.268 ), ( Pin Diameter: 17.00mm ), ( Country/region Of Manufacture: United States ), ( Unit Quantity: Kit ), ( Performance Part: Yes )
The WiseCo P1425 Big 13.5 Piston Kit is an excellent performance upgrade for Kawasaki KZ1000, KZ900, and Z1R motorcycles. This piston kit offers significant power gains and improved engine durability, making it an ideal choice for drag racing or high-performance applications.
This kit includes four forged pistons with a total displacement of 1425cc and a compression height of 13.5mm. The pistons are machined from 2618-T6 aluminum alloy and feature a dished top surface, enhancing the combustion process for improved power and torque. Each piston also boasts a low friction piston ring pack, efficiently reducing cylinder wall wear and controlling oil consumption.
The WiseCo P1425 pistons come with a slower cooling rate ring gap, which ensures proper ring sealing under high-rpm operating conditions prevalent in drag racing. Furthermore, the skirt of the pistons features a Noise Damping Treatment (NDT), reducing engine noise and increasing overall engine smoothness.
Installing this piston kit requires connecting rods compatible with a 2.195-inch stroke length, and it is recommended to use the appropriate inlet and exhaust ported cylinder heads for maximum performance. Though the manufacturer, WiseCo, offers a wide range of engine components, it's crucial to ensure all components are correctly chosen and fully compatible with the user's specific motorcycle model.
The WiseCo P1425 Big 13.5 Piston Kit comes with the necessary hardware and instructions for installation. The experience of installing the pistons can vary depending on the mechanic's skill level and tools available. If you're unsure about the installation process or any technical aspects, it's recommended to consult with a professional mechanic or visit a professional motorcycle engine builder for assistance.
By upgrading to the WiseCo P1425 Big 13.5 Piston Kit, you'll notice improved engine performance on your Kawasaki motorcycle. The enhanced power gains and durability make this piston kit a wise investment for those who ride to win.
The Wiseco P1425 piston kit is a popular upgrade choice for Kawasaki KZ1000, KZ900, and Z1R motorcycles, designed for high-performance applications, particularly in drag racing. Let's weigh the advantages and disadvantages to help you better understand if this piston kit is worth the investment.
Pros:1. Enhanced Power and Performance: The Wiseco pistons are known for their high-compressions and strong design, which can help increase horsepower and torque for your Kawasaki motorcycle, especially when paired with the appropriate engine build.
2. CustomEngineering: Wiseco custom-designs the pistons based on individual engine numbers to ensure a precise, perfect fit, and optimal performance.
3. Improved Engine Durability: Wiseco pistons are made from forged aluminum, which is stronger and more durable than stock pistons. This increased strength helps at high RPM and high horsepower levels.
4. Enhanced Cylinder Coating: The piston skirts are coated with a MaddClass Fusion no-friction coating that promotes smooth sliding and mechanical efficiency.
5. Increase in Cooling Efficiency: The oil cooler bosses on these pistons can be used as an avenue for additional cooling, which may reduce internal engine temperatures.
Cons:1. Expensive: The Wiseco P1425 piston kit can be costly, making it an investment that may be out of reach for some budget-conscious motorcyclists.
2. Complex Installation: Installing the Wiseco pistons requires considerable expertise and some specialized tools, making it a time-consuming and costly process for those not experienced in engine building.
3. Engine Rebuild: The installation of the Wiseco piston kit may require an engine rebuild to ensure that all the components are in good condition and capable of handling the increased power levels.
4. Increased Noise: The higher compression levels which come with these Wiseco pistons can result in more engine noise due to the increased power output.
Conclusion:The Wiseco P1425 piston kit presents a substantial improvement in power and performance for Kawasaki KZ1000, KZ900, and Z1R motorcycles. With its enhanced durability, improved cooling efficiency, and high-end engineering, it becomes an excellent choice for those looking to boost the output of their engines and pursue high-performance applications.
However, potential purchasers should be aware of the steep investment, complex installation process, and potential need for engine rebuilds. Ultimately, if you have the financial capacity, expertise, and the desire to pursuit enhanced power and durability, then the Wiseco P1425 piston kit is definitely a worthwhile investment for your drag race motorcycle.
WISECO HIGH PERFORMANCE 1428cc FORGED BIG BORE PISTON KIT FOR KAWASAKI KZ900 KZ1000 DRAG RACE APPLICATIONS. PISTON KITS: K1015 K1045 K10741 K1075 K10751 R1075 K1105 K11051 K1135 K1200 K1325 P1425 P1494. Drag racing only, I HAD ONE OF THESE KITS AND PROMPTLY SOLD IT.