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PowerStop Evolution drilled-and-slotted rotors are a bolt-on front upgrade for 1973–1974 Buick Apollo applications. Precision cross-drilling and rounded slots enhance cooling and performance under demanding conditions while chamfered holes reduce stress cracking. These hub/rotor assemblies are dynamically mill-balanced, match OE vane counts, and include bearing races where specified; sold as a pair for direct replacement.
Power Stop 73-74 Buick Apollo Front Evolution Drilled & Slotted Rotors - Pair
