Harley Davidson Screamin Eagle Pro Forged Highcompression Pistons For Stock Cylinder Heads 3-7/8″

3-7/8″ Standard Bore

When combined with stock cylinder heads, these forged 3-7/8″ pistons boost the compression ratio of your 3-7/8″ big bore cylinder set-up.

• The combination results in a compression ratio of 10.5:1
• Piston skirts feature a unique black coating for improved wear-resistance, better fit and reduced noise
• These pistons include Titanium SST rings to withstand the stresses seen in racing
• Complete kit includes pistons, rings, wrist pins and clips

Fits Harley-Davidson ’07-later Twin Cam models equipped with 3-7/8″ cylinders. Does not fit Twin-Cooled models. All EFI models require ECM calibration* (priced separately). For race application only.