WISECO 4218MO6750 Forged Big Pistons 67.50MM Dragbike

( Brand: Wiseco ), ( Manufacturer Part Number: 4218MO6750 ), ( Type: Piston Ring Set ), ( Items Included: All Items In The Pictures ), ( Engine Type: 4-stroke ), ( Piston Diameter: 67.50 Mm ), ( Oe/oem Part Number: 1390i, 4218ps ), ( Machine Type: Street Motorcycle ), ( Country/region Of Manufacture: United States ), ( Cylinder Bore Diameter: 2.658 ), ( Performance Part: Yes ), ( Vintage Part: No ), ( Pin Diameter: 15.00mm ), ( Material: Forged Aluminum )

Review WISECO Honda Forged Big Bore Pistons 67.50mm Dragbike fits CB900 CB900C CB750 1979-82

The Wiseco 4218MO6750 forged big pistons are a high-performance upgrade for 1979-1982 Honda CB900, CB900C, and CB750 motorcycles. These pistons are specifically designed to deliver increased power and torque, making them an excellent choice for drag racing or high-performance applications.

The forged construction of these pistons ensures exceptional strength and durability, allowing them to withstand the rigors of high-rpm, high-power engines. The piston crowns feature a flat top design, which is ideal for use in high-compression engines, and they are machined to precise tolerances to ensure a perfect fit in your engine.

The piston skirts are designed with a full-length, split ring groove to accommodate the use of aftermarket piston rings. The pistons are also coated with a low-friction, molybdenum disulfide (Moly) coating, which reduces friction between the piston and cylinder wall, leading to improved engine efficiency and reduced wear.

These pistons have a bore size of 67.50mm, which is larger than the stock pistons, allowing for increased displacement and, ultimately, more power. The piston weight is approximately 262 grams, which is slightly heavier than stock, but this added weight helps to balance the engine and improve power delivery.

It's important to note that installing these pistons requires a cylinder bore honing process to ensure a proper fit and sealing surface. Additionally, it's recommended that these pistons are used with high-performance cylinder heads, camshafts, and other upgraded components to fully realize their potential.

In summary, the Wiseco 4218MO6750 forged big pistons are a high-performance upgrade for 1979-1982 Honda CB900, CB900C, and CB750 motorcycles. They offer increased power and torque, exceptional strength and durability, and improved engine efficiency. These pistons are ideal for drag racing or high-performance applications, but they require additional upgrades and modifications to fully realize their potential.

Wiseco 4218MO6750 Forged Big Pistons for 1979-1982 Honda CB900, CB900C, and CB750: Pros, Cons, and Recommendation

1. Increased Power: Forged pistons can handle higher compression ratios and increased power output, making them suitable for high-performance applications like drag racing.

2. Durability: Forged pistons are stronger than stock pistons due to their manufacturing process, which results in enhanced durability and improved reliability.

3. Weight Reduction: The forged pistons are lighter than their stock counterparts, which can lead to improved engine response and reduced rotating mass.

4. Customizability: Forged pistons come in various sizes and designs, allowing riders to tailor their engine builds to specific performance goals.

5. Improved Thermal Efficiency: Forged pistons can help improve thermal efficiency by reducing friction and heat transfer within the engine.

1. Cost: Forged pistons are more expensive than stock pistons due to their manufacturing process and materials used.

2. Installation Complexity: Installing forged pistons requires specialized knowledge and tools, making it a more complex process than swapping out stock pistons.

3. Clearance Issues: Ensuring proper clearance between the pistons and other engine components, such as the crankshaft, piston rings, and cylinder walls, is crucial for optimal performance and engine life.

4. Timing: The installation process of forged pistons may require adjustments to the engine's timing to ensure proper ignition and combustion.

If you are planning to build a high-performance Honda CB900, CB900C, or CB750 engine for drag racing or other competitive applications, investing in Wiseco's 4218MO6750 forged big pistons (67.50mm) can provide several benefits, including increased power, durability, weight reduction, and customizability. However, it is essential to consider the potential cons, such as the cost, installation complexity, clearance issues, and timing adjustments.

To make the most of your investment, ensure that you work with a qualified mechanic or engine builder who has experience with high-performance Honda engines and forged piston installations. Proper installation, clearance checks, and timing adjustments are crucial to optimizing engine performance and ensuring longevity.

In conclusion, if you are committed to building a high-performance Honda CB900, CB900C, or CB750 engine for drag racing or other competitive applications, Wiseco's 4218MO6750 forged big pistons (67.50mm) can be a worthwhile investment. Just be prepared for the additional costs, installation complexities, and potential challenges that come with the installation process.

Details:

You are looking at a used Wiseco piston set for Honda. The piston set is in very good used condition and includes the pins rings. This piston set was only used for about 100 miles.

part #: 4218mo6750 prices

• $188.09-$197.99

specifications pistondon:

• for models: Cb900, Cb900c, Cb750
• for makes: Honda
• for years: 1979-82
• brand: Wiseco
• mpn: 4218mo6750
• type: Piston Ring Set
• items included: All Items In The Pictures
• engine type: 4-stroke
• piston diameter: 67.50 Mm
• oe/oem part number: 1390i, 4218ps
• machine type: Street Motorcycle
• country/region of manufacture: United States
• cylinder bore diameter: 2.658
• performance part: Yes
• vintage part: No
• pin diameter: 15.00mm
• material: Forged Aluminum

shipping pistondon:

• carrier: USPS
• class: Standard
• type: Fixed
• cost: $7.95
• service: USPS Ground Advantage
• transit: 4-11 Days

returns pistondon:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

seller pistondon:

• # reviews: 133832
• rating: 99.4%
• city: Seattle, Washington

offer pistondon:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: February 18, 2025

payments pistondon:

• credit card: Discover
• wallet: Paypal
• other

general pistondon:

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

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