V-Twin 1270cc Cylinder and Piston Conversion Kit for Harley-Davidson XL (1986-1995)

Upgrade your Harley-Davidson XL from 1200cc to 1270cc with a complete, pre-fitted conversion kit designed for 1986–1995 models. This two-cylinder set includes black highlighter finished cylinders, forged pistons, and moly rings, delivering a straightforward install without machining.

• Pre-fitted forged pistons with Teflon-coated tops for improved combustion efficiency and smoother operation.
• Precision honed cylinders using a 6-position Rottler honing machine for an optimal bore finish and reliable sealing.
• Finish bore size of 3.5995 inches to 3.6005 inches for a precise, durable fit.
• No machining required for installation, simplifying the upgrade process.
• Designed specifically to convert 1200cc Sportster engines to 1270cc on Harley-Davidson XL models from 1986 to 1995.
• Includes two cylinders, pistons, and moly rings; pairs well with accessory items like cylinder head gasket sets and piston ring sets for optimal longevity.
• Sourced from Taiwan with a universal fitment approach and high-quality construction.

Whether restoring an older XL or seeking a performance boost, this kit provides a reliable path to increased displacement and enhanced power delivery, backed by components engineered for a direct, no-hassle upgrade.

Big bore cylinder kit for 1200-1270cc conversion on Sportster models.

Enhance your Harley Davidson XL motorcycle's performance with the V-Twin 1270cc Cylinder and Piston Conversion Kit. Designed for models from 1986 to 1995, this kit allows you to upgrade from a 1200cc to a 1270cc engine capacity, providing increased horsepower and improved power delivery. The kit includes two black highlighter finished cylinders, pre-fitted with forged pistons and moly rings, ensuring a straightforward installation without the need for machining. The cylinders are precision honed on our 6-position Rottler honing machine, guaranteeing optimal bore finish for reliable sealing and performance.
Each forged piston features a Teflon-coated top to promote more complete combustion, contributing to better fuel efficiency and smoother engine operation. The pistons are designed specifically for 1200cc models with a flat top configuration, making this upgrade seamless for your existing engine setup. The finish bore size of 3.5995 inches to 3.6005 inches ensures a precise fit, enhancing durability and performance. Whether you are restoring an older model or seeking a performance boost, this kit provides a reliable solution with high-quality components sourced from Taiwan.
In addition to the main components, this conversion kit pairs well with accessory items like our cylinder head gasket set and piston ring set, which are recommended for optimal sealing and longevity. The kit's universal fitment and high-quality build make it a valuable upgrade for motorcycle enthusiasts aiming to improve their Harley Davidson XL's engine capacity and overall performance.

Features:

• Includes two black highlighter finished cylinders, pistons, and moly rings for an easy installation

• Pre-fitted forged pistons with Teflon-coated tops for improved combustion efficiency

• Precision honed cylinders using a 6-position Rottler honing machine for optimal bore finish

• Designed for conversion from 1200cc to 1270cc on Harley Davidson XL models from 1986-1995

• No machining required for installation, simplifying the upgrade process

Fitment:
Harley Davidson XL 1986
Harley Davidson XL 1987
Harley Davidson XL 1988
Harley Davidson XL 1989
Harley Davidson XL 1990
Harley Davidson XL 1991
Harley Davidson XL 1992
Harley Davidson XL 1993
Harley Davidson XL 1994
Harley Davidson XL 1995
Harley Davidson XL 1996
Harley Davidson XL 1997
Harley Davidson XL 1998
Harley Davidson XL 1999
Harley Davidson XL 2000
Harley Davidson XL 2001
Harley Davidson XL 2002
Harley Davidson XL 2003