The CP Bullet Race Series piston set for Chevy 355ci applications is sold as a set of eight pistons and specifies a 4.045" bore for the 355ci family. The overview emphasizes the explicit bore sizing to help engine builders ensure correct piston-to-bore fit and rotating assembly clearance when preparing or modifying small-block Chevy 355ci engines.
CP Piston Bullet Race Series Bcrse1021-045 Chevy 355Ci All 23 4.045 - Set Of 8