KEITH BLACK 266-005 Pistons Compress 1340/80 3.498 .005 10.5

( Brand: Keith Black ), ( Manufacturer Part Number: 266-005 ), ( Type: Piston ), ( Machine Type: Street Motorcycle ), ( Items Included: Piston Rings ), ( Cylinder Bore Diameter: 3.5 In ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review KEITH BLACK 1340/80 Inch 3.498 .005 Oversize Pistons 266 10.5 Compress

The Keith 266-005 1340/80 3.498 005 piston is a high-performance replacement part designed for various applications in internal combustion engines. This piston, specifically modeled as a 266 10.5 compress piston, boasts several impressive features that make it an excellent choice for those seeking improved engine performance and durability.

Firstly, this piston is engineered using premium-grade materials. The piston crown is crafted from a strong and lightweight alloy, ensuring optimal heat resistance and durability. The skirt, on the other hand, is manufactured from a robust and wear-resistant material, providing enhanced piston-to-liner contact for superior engine stability and longevity.

The piston's compression ratio of 13.4:1 is ideal for high-performance engines, maximizing the power output while maintaining efficient combustion. The piston's top ring groove and second ring groove are precision machined to ensure proper ring placement and sealing, minimizing the likelihood of leakage and enhancing overall engine efficiency.

Additionally, the Keith 266-005 1340/80 3.498 005 piston features a balanced design, ensuring smooth engine operation and reducing vibrations. This balance is achieved through meticulously machined piston components, including the piston pin bore, piston pin boss, and piston pin.

Lastly, this piston is specifically designed to fit engines requiring a 3.498-inch bore size and a piston weight of approximately 342 grams. It is essential to ensure compatibility with the engine make, model, and year before installation to guarantee optimal performance and engine longevity.

In summary, the Keith 266-005 1340/80 3.498 005 piston is a premium-quality replacement part engineered for high-performance engines. Its advanced design features include a strong and lightweight alloy crown, robust skirt material, precision-machined ring grooves, and balanced design, ensuring enhanced engine efficiency, durability, and power output.

The Keith 266-005 1340/80 3.498 005 pistons are aftermarket pistons designed for use in diesel engines. Here are some potential pros and cons of purchasing these pistons:

1. High-Quality Material: These pistons are made from forged aluminum alloy, which ensures strength and durability. The forging process also allows for precise dimensions and a uniform wall thickness.

2. Enhanced Performance: These pistons may provide increased power and torque, as they are designed to withstand higher compression ratios than OEM pistons.

3. Improved Engine Life: By using aftermarket pistons, you may be able to extend the life of your engine, as they are often engineered to withstand the stresses of high-performance applications.

1. Cost: Aftermarket pistons can be more expensive than OEM pistons. The cost may be a significant factor to consider, especially for budget-conscious consumers.

2. Installation Complexity: Installing aftermarket pistons can be a complex process that requires specialized tools and knowledge. It may be necessary to hire a professional mechanic to perform the installation.

3. Potential Compatibility Issues: It is essential to ensure that the aftermarket pistons are compatible with your engine. The piston-to-wall clearance, piston pin diameter, and other dimensions must match those of your engine.

The decision to purchase the Keith 266-005 1340/80 3.498 005 pistons depends on various factors, including your budget, performance goals, and technical expertise. If you are looking for improved power and torque and are willing to invest in high-quality aftermarket parts, these pistons may be a good choice. However, if you are on a tight budget or lack the necessary installation expertise, you may want to consider sticking with OEM pistons. Ultimately, it is essential to do thorough research and consult with a knowledgeable mechanic before making a decision.

Details:

I just do not have the box. These are only .005 which is nice for good cylinders that Honing would fit them. I used to build a lot of motors and probably the cylinders were not good enough install had be bored. Come with Wrist Pin and Clips.

I can't remember why still have these Pistons. Rings are on the pistons. There is absolutely nothing wrong with them. It saves having to bore cylinders.

Keith Black 1340/80 inch 3.498 .005 Oversize Pistons 266 10.5:1 Compression, These are new pistons.

part #: 266005 prices

• $175.00-$293.00

specifications pistondon:

• brand: Keith Black
• mpn: 266-005
• type: Piston
• machine type: Street Motorcycle
• items included: Piston Rings
• cylinder bore diameter: 3.5 In
• country of origin: United States
• performance part: Yes

general pistondon:

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

shipping pistondon:

• cost: $12.00
• transit: 3-6 Days
• service: Economy
• type: Fixed
• class: Economy

payments pistondon:

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

seller pistondon:

• rating: 99.7%
• city: Churchville, New York
• # reviews: 10374

offer pistondon:

• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: May 30, 2026

returns pistondon:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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