This Bilstein B6 is a rear monotube damper listed for the 1988 Chevrolet Corvette 35th Anniversary Edition. The manufacturer describes the B6 as a performance damper that replaces original equipment units while staying matched to the factory spring. Its 46mm monotube body uses Bilstein's gas-pressure design, a format the company has built on since it introduced the monotube shock in 1957. The velocity-sensitive digressive piston is the main reason to pay for this part over a generic OE-style replacement, since it changes its damping response with how fast the shock is moving. The manufacturer also says the smooth 46mm body sheds heat better than twin-tube units during sustained driving. For a C4 owner who wants a firmer, more controlled rear end without swapping springs, this is a straightforward upgrade. Searches for a 1988 Corvette 35th Anniversary rear shock, a C4 Corvette gas monotube upgrade, or a Bilstein B6 rear damper for OE spring setups all point to this part.