SKU:11-2230
Upgrade your Harley-Davidson XL Evolution engine with the Keith Black KB272.010 piston kit, a.010 oversize solution that delivers a 9.0:1 compression ratio for 1986–1995 XL models. Designed for a 3.812-inch stroke and a dish head, this kit is built to boost power while maintaining reliable, long‑lasting operation.
The pistons are crafted from an alloy cast hypereutectic material, offering reduced weight and strength with low heat transfer. This combination helps keep piston skirts cooler, minimizes expansion under load, and supports durable performance over time.
Included in the kit is a Hastings moly ring set, providing proper sealing and stable ring seating for consistent performance. It is compatible with Harley XL engines that use a 3.812-inch stroke and a dish-head configuration. It is not suitable for overboring to 1200cc in 2009–UP XL 883 cylinders, which require separate 1200cc cylinders for proper fitment.
For installation, plan to use the #11-1364 80-inch Shovelhead piston ring set in.010, along with common tools such as a ring compressor, connecting rod clamping tool, and piston ring grinder to ensure correct assembly and longevity. Break-in is recommended: run the engine at moderate speeds for at least 500 miles and avoid prolonged low-gear operation to promote proper seating of rings and pistons.
Manufactured in Mexico, this piston kit provides a high-performance upgrade for Harley-Davidson XL engines across the eligible model range, delivering reliable power and durability for years to come.
Keith Black dish piston set is.010 oversize with a 9.0:1 compression ratio for 1986-up XL Evolution models.Enhance your Harley Davidson XL engine with the Keith Black 272.010 hypereutectic piston kit, designed for reliable performance and longevity. Crafted from alloy cast in a permanent steel mold, this piston kit offers a lightweight construction that increases power output while maintaining quiet operation and fuel efficiency. The low heat transfer characteristics of the alloy help keep the piston skirts cool, minimizing expansion and ensuring durability over time. This set includes a Hastings moly ring set, providing a complete solution for rebuilding or upgrading your engine. Compatible with engines using a 3.812-inch stroke and a dish head, it is ideal for use in 1986-1995 Harley Davidson XL models, excluding 2009-UP XL 883 cylinders which cannot be bored to 1200cc and require separate purchase of 1200cc cylinders for proper fitment. Proper break-in procedures are recommended, including running the engine at moderate speeds for at least 500 miles and avoiding excessive low gear operation to ensure optimal piston and ring seating. For installation, it is suggested to use the #11-1364 80-inch Shovelhead piston ring set.010, along with recommended accessory tools such as a ring compressor kit, connecting rod clamping tool, and piston ring grinder, all designed to facilitate correct assembly and longevity of the components. Manufactured in Mexico, this piston set provides a high-performance upgrade for your Harley Davidson XL engine, ensuring reliable operation and increased power for years to come.
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