SKU:11-0314
3-7/16 inch bore with.070 oversize and a compression ratio of 7.5:1, designed to upgrade Harley Davidson FL engines. The kit includes Hastings 3-piece rings, 2 wrist pins, and 4 circlips, with pistons featuring a steel expansion control strut for durable operation.
Designed specifically for Harley FL models from 1941 through 1950, this piston set is crafted in the USA to ensure quality and durability. It provides a complete rebuild foundation with all necessary components—pistons, rings, wrist pins, and lock components—for reliable, OEM-matched performance.
Each piston is precision engineered to match OEM specifications, delivering a consistent fit and efficient power delivery. The kit’s high-quality materials contribute to improved engine compression and overall performance, restoring your Harley Davidson FL to peak condition. For easier assembly, accessory tools such as the Ring-O-Matic ring compressor kit and a connecting rod clamping tool are recommended, and detailed installation instructions are included.
Break-in guidance: run the engine at moderate speeds for a minimum of 500 miles and avoid prolonged low-gear operation to promote proper piston and ring seating for long-lasting performance.
Fitment (selection from the provided range):
Upgrade your Harley Davidson FL engine with the Motorshop 74 Inch Overhead Valve Piston Set in.070 oversize. Designed specifically for models from 1941 through 1950, this piston kit is crafted in the USA to ensure quality and durability. The set includes all necessary components for a comprehensive rebuild, providing a reliable foundation for your vintage Harley engine. Proper break-in procedures, such as running the engine at moderate speeds for at least 500 miles and avoiding excessive low-gear operation, are recommended to ensure optimal piston and ring seating for long-lasting performance.
Each piston in this kit features precision engineering to match OEM specifications, offering a perfect fit and efficient power delivery. The included piston ring set, wrist pin, and lock components are designed to work seamlessly together, ensuring smooth operation and minimal wear over time. The kit's high-quality materials and craftsmanship contribute to improved engine compression and overall performance, restoring your Harley Davidson FL to peak condition.
For ease of installation, consider also using accessory tools such as the Ring-O-Matic ring compressor kit and the connecting rod clamping tool, which are recommended for efficient assembly. Detailed instructions are provided to guide you through the installation process, ensuring a successful rebuild. Whether you're restoring a vintage Harley or performing routine maintenance, this piston set is an essential upgrade that combines quality, performance, and authenticity in one complete package.
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