SKU:11-2709
The Motorshop 11-2709 Replica 900cc 3-inch Piston Set .030 Oversize is designed for compatible Harley-Davidson XL engine applications from 1957 through 1966. This piston set supports engine rebuilding and replacement projects requiring an oversize piston configuration, helping restore proper cylinder performance when used with correctly prepared components. It is supplied as a kit for convenient installation during a complete top-end service or engine overhaul.
The .030 oversize specification is intended for cylinders that have been professionally inspected and machined to the appropriate clearance. Confirm cylinder condition, bore measurements, piston-to-cylinder clearance, ring end gap, and wrist pin fit before assembly. Proper preparation and precise measurement are essential for dependable operation and long service life. Always follow applicable service procedures and use suitable assembly tools when installing the pistons, rings, wrist pins, and related components.
After installation, run the engine at moderate speeds for at least 500 miles. Avoid excessive operation in lower gears during the break-in period so the new pistons and rings can properly seat. Vary operating conditions as appropriate, monitor engine performance, and complete all recommended break-in and inspection procedures. The kit is manufactured in Taiwan and is identified by Motorshop part number 11-2709.
This piston set fits 1957-1966 Harley-Davidson XL models, including XL applications from 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, and 1966. Verify the motorcycle year, engine configuration, bore requirements, and oversize specification before ordering. For related installation needs, compatible suggested items include a .030 oversize 900cc piston ring set and piston wrist pin locks.
Features:
Couldn't load pickup availability
