Harley-Davidson XL883R Big Bore Kits

Genuine Harley-Davidson

Make your Iron 883 roar. This complete conversion kit will alter the personality of your 883-equipped Sportster model. Designed to bring your XL883 model up to XL1200 specifications, this kit includes Sportster Stage I Air Cleaner Kit, XL1200 Cylinder Heads, and XL1200 Cylinders and Pistons. Kit includes cylinders and cylinder heads. Black Highlighted.

Genuine Harley-Davidson

Convert your XL883 to a full 1200cc with this Piston Kit. These forged pistons have a redesigned "dished" top that has been optimized for use with stock 883 heads. Compression ratio is increased to 10:1, and works great with Screamin' Eagle cams. Kit includes pistons, rings, pins and circlips.

Genuine Harley-Davidson

Make your Iron 883 roar. This complete conversion kit will alter the personality of your 883-equipped Sportster model.

Genuine Harley-Davidson

Except for relieving the combustion chamber on stock 883 cylinder heads for correct compression ratio, these cylinders make the conversion to 1200cc a bolt-on operation. No cylinder head machining is required when used with Screamin' Eagle Cylinder Heads, or the 883/1200 Conversion Piston Kit. Cylinders are sold separately; two are required for the conversion. All EFI models require ECM calibration (priced separately). For race application only.

Genuine Harley-Davidson

Convert your XL883 to a full 1200cc with this Piston Kit. These forged pistons have a redesigned "dished" top that has been optimized for use with stock 883 heads. Compression ratio is increased to 10:1, and works great with Screamin' Eagle cams. Kit includes pistons, rings, pins and circlips.