These low compression 3-1/2" bore forged stroker pistons for 1984-'99 HDĀ® big twins are a low compression option for 89" stroker kits for 1984-'99 with 4-5/8" stroke flywheels and S&SĀ® Super Stock heads. 10.5:1 compression . +.010".
These low compression 3-1/2" bore forged stroker pistons for 1984-'99 HDĀ® big twins are a low compression option for 89" stroker kits for 1984-'99 with 4-5/8" stroke flywheels and S&SĀ® Super Stock heads. 10.5:1 compression . +.010".
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