The CP Pistons Bullet Race piston set for Chevy big-block 489ci applications lists a 4.280" bore, 4.250" stroke and a 6.385" rod length, supplied as a set of eight. These pistons are dimensioned to the documented big-block Chevy package in the description and are intended for rebuilds or custom builds that require the specified bore, stroke and rod geometry for proper fitment.
CP Piston BRS Chevy BB 489Ci Bore 4.280 Ch 1.270 Stroke 4.250 Rod 6.385 Set Of 8 (MTO Non-Cancel)