The CP Pistons Bullet Race (BRS) piston set for Olds 455 is supplied as a matched eight-piston kit with explicit sizing. Listed dimensions include a 4.155" bore, 4.250" stroke and 6.735" rod length, provided as an MTO non-cancel set of eight. Use this set for Oldsmobile 455 builds that require those exact bore and stroke measurements.
CP Piston BRS Olds 455 4.155 Bore 4.250 Stroke 6.735 Rod Set Of 8 (MTO Non-Cancel)