S&S Cycle 79-84 BT 3-1/2in +.020in 80in LC Forged Pistons

These 3-1/2" +.020" bore pistons fit 1979-'84 80" HD® big twin engines, producing 8:1 compression with stock unmodified cylinder heads.. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past, this could only be achieved with weaker cast pistons. S&S® will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option).

Upgrade your Harley Davidson big twin engine with the S&S Cycle 79-84 BT forged pistons, designed for 3-1/2 inch bore applications with a +.020 inch oversize. Crafted from modern alloys and featuring advanced skirt profiles, these pistons allow for a tighter fit within the cylinders, reducing engine noise and enhancing durability. This innovative design provides a long engine life and improved performance, which previously required weaker cast pistons. The pistons are compatible with stock unmodified cylinder heads, making them a reliable choice for engine rebuilds and performance upgrades. S&S® offers these pistons as a direct fit for your existing cylinders, simplifying installation and ensuring optimal performance. When purchasing new cylinders, these pistons can be fitted as an option, providing flexibility for your upgrade project. The forged construction ensures strength and longevity, making them suitable for demanding riding conditions and ensuring your Harley’s engine runs smoothly and efficiently. These pistons are ideal for enthusiasts seeking performance enhancements while maintaining the classic look and feel of their Harley Davidson engine. Proper installation and compatibility with your specific model year are essential, and these pistons are recommended for models from 1979 through 1984, including the FLH Electra Glide, FLHS Electra Glide Sport, FLT Tour Glide, and FXR Super Glide II. Trust S&S Cycle to deliver quality components that meet the demands of powersports enthusiasts and professional mechanics alike. Note that these pistons are not carb approved and require acknowledgment before installation, ensuring compliance with relevant regulations and standards.

Features:

• Designed for 3-1/2 inch bore with +.020 inch oversize for 1979-1984 Harley Davidson big twin engines

• Constructed from modern alloys with advanced skirt profiles for tighter fit and reduced engine noise

• Provides 8:1 compression ratio with stock unmodified cylinder heads

• Forged pistons for increased strength, durability, and long engine life

• Compatible with existing cylinders, ideal for engine rebuilds and performance upgrades

• Fits popular Harley models including FLH Electra Glide, FLHS Sport, FLT Tour Glide, and FXR Super Glide II

Fitment:
Harley Davidson FLH Electra Glide Base 1979
Harley Davidson FLH Electra Glide Base 1980
Harley Davidson FLH Electra Glide Base 1981
Harley Davidson FLH Electra Glide Base 1982
Harley Davidson FLH Electra Glide Base 1983
Harley Davidson FLH Electra Glide Base 1984
Harley Davidson FLHS Electra Glide Sport Base 1980
Harley Davidson FLHS Electra Glide Sport Base 1981
Harley Davidson FLHS Electra Glide Sport Base 1982
Harley Davidson FLHS Electra Glide Sport Base 1983
Harley Davidson FLHS Electra Glide Sport Base 1984
Harley Davidson FLHX Electra Glide Special Base 1984
Harley Davidson FLT Tour Glide Base 1980
Harley Davidson FLT Tour Glide Base 1981
Harley Davidson FLT Tour Glide Base 1982
Harley Davidson FLT Tour Glide Base 1983
Harley Davidson FLTC Tour Glide Classic Base 1981
Harley Davidson FXR Super Glide II Base 1982
Harley Davidson FXR Super Glide II Base 1983