The CP Pistons Bullet Race piston set for BBC 490ci applications is specified with a 4.280" bore, a 4.250" stroke and a 6.385" rod length, offered as a set of eight. These pistons are dimensioned for the big-block Chevy 490ci configuration described and intended for engine builds that require the documented bore, stroke and rod sizing.
CP Piston BRS BBC 490 Ci 4.280 Bore 4.250 Stroke 6.385 Rod Set Of 8 (MTO Non-Cancel)