Motorshop 74 Inch Panhead Cylinder Piston Kit for Harley FL 1948-1952

Upgrade your vintage Harley FL with the Motorshop Replica 74 Inch Panhead Cylinder Piston Kit, bored and honed to 87.325 mm and delivering stock 8.5:1 compression. The kit uses two cast-iron cylinders that preserve original casting marks for authentic appearance and fitment.

• Inner bore diameter: 3.4380–3.4385 inches
• Piston-to-wall clearance:.0025–.003 inches
• Cylinders feature oil passages drilled through the wall to return oil to the crankcase
• Pistons are pre-fit and ready to run
• Cylinders carry an M-1-0 date code, indicating Taiwan-made quality

This kit is designed for Harley-Davidson FL models from 1948 to 1952, preserving the classic engine architecture while delivering reliable performance during rebuilds or restorations. For proper break-in, gradually increase engine RPM during the first 500 miles to ensure seating and longevity of the components.

Included in this kit are essential accessories and suggested items such as the 11-1283 Front Cylinder and 11-1284 Rear Cylinder, along with a Ring-O-Matic Ring Compressor Tool Kit (16-0622), a 74 inch Panhead Cylinder and Piston Kit (11-2602), a Piston Pin Support Plate (16-1164), and a complete 74 inch Panhead Cylinder Kit (11-1688).

This 74 inch Panhead cylinder and piston kit is bored and honed to 87.325mm with a stock compression of 8.5:1. Cylinders have original casting marks as on stock cylinders for this year group.

Upgrade your vintage Harley Davidson FL with the Motorshop Replica 74 Inch Panhead Cylinder Piston Kit, designed to deliver reliable performance and authentic fitment. This kit includes two cylinders featuring oil passages drilled through the wall, allowing oil to return through the bore to the crankcase, ensuring proper lubrication during operation. The pistons are pre-fit and ready to run, simplifying installation and reducing assembly time. For optimal break-in, it is recommended to gradually increase engine RPM during the first 500 miles to ensure proper seating and longevity of the components.

All cast iron cylinders within this kit have a piston-to-wall clearance of.0025 to.003 inches, with a bore size precisely machined at 3.4380 to 3.4385 inches inner diameter. These specifications are consistent across all units, ensuring compatibility and reliable performance. Each cylinder features an M-1-0 date code, indicating quality control and manufacturing standards established in Taiwan, known for producing durable motorcycle engine components.

Included in this kit are essential accessories and suggested items such as the 11-1283 Front Cylinder and 11-1284 Rear Cylinder, along with a comprehensive range of accessory items like the Ring-O-Matic Ring Compressor Tool Kit (16-0622), a 74 inch Panhead Cylinder and Piston Kit (11-2602), a Piston Pin Support Plate (16-1164), and a complete 74 inch Panhead Cylinder Kit (11-1688). These components facilitate a seamless installation process and ensure your engine maintains optimal performance. This product is ideal for restoration projects or rebuilds on Harley Davidson FL models from 1948 to 1952, preserving the classic engine architecture while ensuring modern reliability and performance.

Features:

• Oil passages drilled through wall for efficient oil return to crankcase

• Pre-fit pistons ready for installation, simplifying assembly

• Cast iron cylinders with uniform piston-to-wall clearance of.0025 to.003 inches

• Bore size precisely machined at 3.4380-3.4385 inches inner diameter

• M-1-0 date code on cylinders indicating quality control from Taiwan

Fitment:
Harley Davidson FL 1948
Harley Davidson FL 1949
Harley Davidson FL 1950
Harley Davidson FL 1951
Harley Davidson FL 1952