The Wiseco K673M815AP Professional Series forged pistons are engineered for serious racers and high-performance engine builders seeking reliable durability and exceptional performance. Crafted from high-quality 2618 aluminum in the USA, these pistons provide increased tensile strength to withstand heavy-duty and severe performance applications. Their precision-machined crown and features such as optimized ring grooves, anti-detonation groove, and enhanced ring seal contribute to improved combustion efficiency and power output. The ArmorGlide skirt coating offers seizure resistance, friction reduction, and quieter operation, making these pistons ideal for demanding racing environments. Designed specifically for Honda B16A engines, the set includes four pistons with an 81.50 mm bore and a 30.00 mm compression height, ensuring precise fitment and performance. The pistons are equipped with forced pin oiling, which enhances lubrication and reduces wear during high-stress operation. 

These pistons are supplied with premium rings and are built to withstand the rigors of heavy to severe duty racing, providing you with confidence on the track or in performance applications. Please note, these pistons are not carb-approved and require acknowledgment of this before use. As a fully machined component set, they are ideal for professional engine builders aiming to remove limits and push their engines to the maximum. Whether upgrading a stock engine or building a race-ready powerplant, the Wiseco Professional Series Honda B16A pistons deliver the durability, strength, and performance you demand. Proper installation with the recommended gasket ensures optimal operation and longevity in your high-performance build.

Features:

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
• Precision ring grooves, anti-detonation groove, and additional ring seal improving features
• ArmorGlide skirt coating offers seizure resistance, friction reduction, and quieter operation
• Designed and built to withstand heavy to severe duty performance applications
• Fully machined crown features for precise fit and performance
• Forced pin oiling improves lubrication and reduces wear during operation