The Bilstein B8 Performance Plus rear shock (part 24-193702) is a 36mm monotube, gas-pressure damper for the rear of the Hyundai Genesis Coupe. Bilstein's B8 line is built as an upgrade over factory dampers for cars running lowering springs, and this unit uses application-specific valving for the coupe's rear axle. The yellow body and stem-top, eye-bottom mounts let it drop into the factory location without fabrication. Owners on user forums consistently describe a firmer, more controlled rear end with less body roll and less bounce than worn stock units, which is the real-world gain that separates it from a budget shock.
Choose this over a cheaper spring-only or generic gas shock if you want a rear that stays planted through corners on a lowered Genesis Coupe RWD. Owners on user forums report that the rear feels more composed on uneven pavement and that the setup pairs well with aftermarket springs, though some note the car sits slightly higher than stock, so tire size and spring choice matter. Rear replacement is one of the more approachable suspension jobs on this car; owners on user forums have done it in a driveway with jack stands, though the lower mount is snug and needs patience. Bilstein's general installation guidance calls for a chassis hoist, securely tightened mounting fasteners before the suspension is loaded, and a caster and camber check afterward, so a professional alignment is worth budgeting for. Search terms this part matches include Genesis Coupe rear monotube shock, B8 Performance Plus rear damper, and lowering spring rear shock upgrade.
Published fitment data is inconsistent. The product title references 2010–2013, while other fitment listings extend coverage to 2010–2016 and include both 2.0T and 3.8 V6 applications. Confirm fitment for your specific year and trim with the manufacturer before purchasing.
The manufacturer positions the B8 Performance Plus line as designed to pair with aftermarket lowering springs. If your car is at stock height, check with the manufacturer about suitability before installing.
Owners on user forums report that Bilstein B8 dampers can sit the car slightly higher than the factory setup, and that tire size, spring choice, and alignment all influence the final stance.
Rear replacement is a moderate job for a home mechanic with a floor jack, a pair of rated jack stands on level ground, a socket set, a breaker bar, a torque wrench, and penetrating oil for seized hardware. Owners on user forums say the rear is simpler than the front, which requires a spring compressor, but the lower mounting bolt sits in a tight space and can be stubborn. Support the lower control arm so the spring stays under control while you work, and set the new shock's bolts to specification with the suspension at ride height. Because Bilstein's general instructions recommend professional installation on a chassis hoist, and because an alignment check is needed after any change, plan on a shop alignment once the car is driven and settled.
