STD Forged Piston Set LOW COMP Big Twin (79-84) Harley

【S&S Cycle 106-5511 STD Forged Piston Set, Low Comp, Big Twin (79-84), Harley Engine Parts, Plot】
■Product Description These 3-1/2 inch standard bore pistons fit 1979-84 80Ci HD Big Twin engines and achieve an 8:1 compression ratio with stock cylinder heads. The advanced alloy used in these pistons, coupled with the advanced skirt profile, promotes a tight piston fit, allowing for low engine noise and long engine life. This was previously only achievable with cast pistons. These pistons can be installed in existing cylinders. Optional pistons can be installed when purchasing new cylinders. ■Compatible models: HarleyDavidson Big Twin (79-84) ■Specifications: Material: Forged aluminum, Accessories: Piston pin, Piston rings ■Notes: *Images are for illustration purposes only. Includes products with different sizes and colors. Product design and specifications may change without prior notice. Please understand.