The Bilstein B6 24-192927 is a single rear damper from the B6 Performance line, sized for the 1985 Chevrolet Corvette base model. Bilstein describes B6 Performance dampers as an upgrade to OE dampers designed to be paired with the OE factory spring. The internal layout is a monotube with gas pressure, and it uses a velocity sensitive, digressive piston that reacts to changing road conditions. That pairing keeps your stock ride height and spring rate while upgrading only the damping. Why pay more than a generic replacement? The B6 is built to handle heat and repeated loading, and its monotube design provides consistent fade free performance. The finish is also a practical advantage: Bilstein applies a special yellow paint finish to every B6 shock body that withstands a full 240-hour salt spray test. Enthusiasts on Corvette forums have recommended Bilsteins specifically for the C4 platform. Search terms for this part include 1985 Corvette rear shock, C4 Corvette rear monotube damper, Bilstein B6 24-192927, and factory spring compatible performance shock. Confirm fitment against your car's option codes before ordering, since the manufacturer's application page for this exact number was not located during research. Replacement is a manageable weekend task. Owners estimate about an hour for the job, and the rear lower shock bolt is a long 24 mm bolt and nut. Plan for a seized top nut and a shock compression step that takes real force.
The manufacturer states that B6 dampers are designed to pair with the factory spring, so no spring swap or spacer is required on stock-height vehicles.
Owners on user forums report that new mount bolts are generally unnecessary unless the originals are physically damaged or the strut rods are being replaced.
Owners on user forums cite about 66 ft-lbs for the upper bracket bolt and about 60 ft-lbs for the stud nut at the knuckle. Confirm these figures against a factory service manual before torquing.
Owners on user forums describe this as an easy rear job that is simpler than the front. Raise the rear on jack stands, remove the wheels, and loosen the lower 24 mm bolt and nut first. Soak the fasteners in penetrating oil for a day or two if they are rusty. Hold the stud nut with a back-up wrench at the knuckle, and bring the upper bracket and knuckle fasteners to the torque values noted in the FAQ. Keep the old hardware until the new damper is seated, and expect the shock to need firm compression to fit the mounts.
