Motorshop 61 Inch Knucklehead Cylinder Piston Kit For Harley EL 1936 To 1940

61-inch Knucklehead cylinder and piston kit, cast iron with five cooling fins, is designed specifically for Harley-Davidson EL models from 1936 to 1940.

Honed and pre-fitted with 7.5:1 compression cast pistons and rings, this kit is ready to run after proper break-in procedures outlined in the shop manual.

The kit is suitable for stock stroke engines and features a piston-to-wall clearance of approximately 0.0025 to 0.003 inches, balancing durability with performance for vintage Harley setups.

Original markings with a black finish are retained in appearance, but replacement kits do not carry the original motorcast markings or factory casting numbers on the cylinder base.

Made in Taiwan, these cylinders are crafted to reliable manufacturing standards while maintaining compatibility with classic EL configurations.

Fitment covers Harley Davidson EL models from 1936 to 1940, making this kit a focused option for restoration or rebuild projects. Pair with recommended accessories to tailor fitment for your engine, including piston sets and additional cylinders designed for classic Harley engines.

For installation steps and fitment guidance, see V-Twin Manufacturing Piston Fitment Instructions.

Replacement 61 inch Knucklehead cylinder and piston kit features cast iron construction with 5 fins above head bold line. Original markings with a black finish. Honed and pre fitted with 7.5:1 compression cast pistons and rings.

The Motorshop 61 Inch Knucklehead Cylinder Piston Kit is designed specifically for vintage Harley Davidson EL models from 1936 to 1940. Crafted with precision, these cylinders feature five fins for effective cooling and are ready to run after proper break-in procedures, which are outlined in the provided shop manual. This kit is suitable for stock stroke applications, ensuring compatibility with original engine configurations. The cylinders are constructed from cast iron, with a piston-to-wall clearance of approximately 0.0025 to 0.003 inches, ensuring optimal performance and durability. Please note that replacement kits do not carry the original motorcast markings or factory casting numbers on the cylinder base, maintaining a focus on functional quality and compatibility. These cylinders are sourced from Taiwan, offering reliable manufacturing standards. Proper installation and break-in are essential for longevity and performance, and detailed instructions can be found at V-Twin Manufacturing Piston Fitment Instructions. Pair this set with recommended accessories to achieve the best results, including piston sets and additional cylinders designed for classic Harley engines. Whether restoring a vintage bike or performing a rebuild, this kit provides a dependable foundation for your project.

Features:

• Five fins for efficient cooling

• Ready to run with proper break-in

• Suitable for stock stroke engines

• Constructed from durable cast iron

• Piston-to-wall clearance of approximately.0025 -.003 inches

• Designed for Harley Davidson EL models from 1936-1940

• Made in Taiwan for quality manufacturing

Fitment:
Harley Davidson EL 1936
Harley Davidson EL 1937
Harley Davidson EL 1938
Harley Davidson EL 1939
Harley Davidson EL 1940