Brake Rotor Rear Left Drilled Slotted 12.375" Dia. 2.785" Center They are ground and thread-rolled

They are ground and thread-rolled after heat treatment to ensure the exacting tolerances that Speedmaster requires for all of their fasteners

The filter extensions fit Speedmaster deep transmission pans

Upgrade a standard C4

Try using Speedmaster steel crankshaft pulleys to increase horsepower and reduce accessory drag

Speedmaster adjustable fan wiring kits are designed to give you the adjustable temperature control you've been looking for

Brake Rotor Rear Left Drilled Slotted 12.375" Dia. 2.785" Center They are ground and thread-rolledSpeedmaster makes brake rotors for a variety of applications in cross drilled and or slotted styles. These rotors are made from high quality materials to exacting standards for perfect fit and function, making them a great choice for your disc brake conversion.