Why It Matters
Four-wheel 11-inch hydraulic drums were standard. RPO 686 added metallic linings. RPO 687 added metallic facings, finned drums, cooling fans and air scoops together with special shocks and quick steering.
Also Known As
1961 Corvette drum brakesRPO 686 metallic brakesRPO 687 heavy-duty brakes11-inch Corvette drums