The CP Pistons Bullet Race piston set for Big Block Ford 521 applications is supplied as a set of eight pistons sized to fit 460 iron heads with a 4.390" bore listed. Supplied as a complete set of eight, this Bullet Race set provides the piston sizing called out for Big Block Ford 521 displacement builds and engine assembly projects.
CP Piston Bullet Race Series Big Block Ford 521 Head: 460 Iron Bore : 4.390 Set Of 8