This H&R Super Sport set is a four-spring progressive coil kit for the W202-chassis Mercedes-Benz C43 AMG, made from 54SiCr6 spring steel at H&R's ISO 9001-certified plant in Germany. The manufacturer rates the drop at roughly 2.0 inches front and 1.9 inches rear, which closes the fender gap left by the factory setup. Compared with a cheap no-name kit, the reason to choose this one is the consistency of the engineering: the manufacturer says each spring is tested before it ships, and the progressive rate keeps body roll in check through corners without making daily driving harsh.
Fitment is the first thing to verify. The part is listed for C43 AMG models built after 1/1/1996, and listings disagree on which model years they cover, so confirm your build date before ordering. Ride height also depends on the factory rubber spring-perch pads, and owners on user forums swap pad thicknesses to correct rake or tire rub after installation. Front installation requires a Mercedes-style internal spring compressor, while owners on user forums say the rear springs can be removed by dropping the lower control arm with a floor jack. Buyers searching for a W202 C43 AMG 2-inch front and 1.9-inch rear progressive lowering spring kit, an H&R 52727-77 install, or C43 AMG spring pad adjustment will find this set matches that profile.
The listed fitment covers W202 C43 AMG units built after 1/1/1996. Because listings disagree on model years, check your build date with the manufacturer before ordering.
Details vary. Owners on user forums have run these springs with factory shocks without trouble, while others report that factory shocks can bind at this drop and recommend shocks designed for lowering springs. Confirm with the manufacturer if you are unsure.
Owners on user forums say the front springs require a Mercedes-style internal compressor, while the rear springs can be removed after dropping the lower control arm on a floor jack.
Front springs are the harder job. Plan on a Mercedes-style internal spring compressor, a floor jack, jack stands, Torx and metric sockets, and a torque wrench. Owners on user forums warn that an impact gun may not free the ball joint nuts and that standard separators can damage the joints, so take your time there. Rear springs are more manageable and can be done with a floor jack under the control arm. Expect the ride height to change with the factory spring-perch pads, so measure fender gap and tire clearance after assembly and recheck your alignment once the car is back on the ground.
