Motorshop Replica 900cc Piston Set.070 Oversize for Harley Davidson XL (1957–1971)

Increase your Harley Davidson XL displacement to 900cc with the Motorshop Replica 900cc Piston Set in.070 oversize, engineered for XL engines built from 1957 through 1971.

Replica-style pistons for a 3-inch bore, with a 3-1/16 inch diameter and an oversize of.070, paired to deliver a 9:1 compression ratio. The piston alloy is cast in a permanent steel mold and includes rings for immediate installation.

Country of origin: Taiwan. Crafted to meet classic Harley Davidson specifications, this kit preserves vintage aesthetics while delivering durable, reliable performance.

• Piston Diameter: 3-1/16 inches
• Oversize:.070
• Compression ratio: 9:1
• Fitment: Harley Davidson XL 1957–1971
• Country of origin: Taiwan
• Includes rings

Installation notes: Proper break-in is essential; run your engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to allow the pistons and rings to seat properly and deliver optimal performance over time.

Installation instructions: Available online for proper break-in and assembly.

Suggested items:

• 11-0107 - 900cc Piston Ring Set.070 Oversize
• 12-0929 - Piston Wrist Pin Lock
• 16-0622 - Ring-O-Matic Ring Compressor Tool Kit
• 16-0029 - Connecting Rod Clamping Tool
• 60-0167 - Replica 900cc Piston Set.060 Oversize

Replica style 3 inch bore piston set has a 9:1 compression ratio and is oversize.070. Piston set alloy is cast in a permanent steel mold and includes rings.

Upgrade your Harley Davidson XL engine with the Motorshop Replica 900cc Piston Set in.070 oversize, designed specifically for models from 1957 through 1966. Crafted in Taiwan, this piston kit includes precision-engineered components that ensure reliable performance and durability. Each piston features a diameter of 3-1/16 inches, providing a perfect fit for your vintage motorcycle. Proper break-in is essential; run your engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to allow the new pistons and rings to seat properly and deliver optimal performance over time. For installation, consult the detailed instructions available at this link. This kit is ideal for restoring or enhancing vintage Harley-Davidson engines, offering a cost-effective solution for serious enthusiasts and restorers alike. Pair this piston set with recommended accessories, including piston rings, wrist pin locks, and specialized installation tools, to ensure a smooth and efficient assembly process. Designed to meet the specifications and quality standards for classic Harley Davidson models, the Motorshop Replica 900cc Piston Set guarantees a reliable upgrade that maintains your motorcycle's vintage integrity while providing improved performance.

Features:

• Piston Diameter: 3-1/16 inches for a precise fit on vintage Harley XL engines

• Oversize:.070 to increase engine displacement and power output

• Country of Origin: Taiwan ensuring quality manufacturing standards

• Installation Instructions: Available online for proper break-in and assembly

• Suggested Items: 11-0107 - 900cc Piston Ring Set.070 Oversize, 12-0929 - Piston Wrist Pin Lock

• Accessory Items: 16-0622 - Ring-O-Matic Ring Compressor Tool Kit, 16-0029 - Connecting Rod Clamping Tool, 60-0167 - Replica 900cc Piston Set.060 Oversize

Fitment:
Harley Davidson XL 1957
Harley Davidson XL 1958
Harley Davidson XL 1959
Harley Davidson XL 1960
Harley Davidson XL 1961
Harley Davidson XL 1962
Harley Davidson XL 1963
Harley Davidson XL 1964
Harley Davidson XL 1965
Harley Davidson XL 1966
Harley Davidson XL 1967
Harley Davidson XL 1968
Harley Davidson XL 1969
Harley Davidson XL 1970
Harley Davidson XL 1971