The Bilstein B8 Performance Plus 24-229937 is a rear monotube gas-pressure shock for the MQB-platform Audi A3, S3, TT, and Volkswagen Golf, GTI, Golf R, and Arteon. The manufacturer describes the B8 Performance Plus as an upgrade over OE dampers, designed to pair with aftermarket lowering springs. Each unit uses application-specific valve settings in a monotube body, and Bilstein states that every damper is tested to meet or exceed OE standards.
Lowering a car changes how the factory damper works with the spring, which is why a stock rear shock often feels underdamped after a drop. The manufacturer positions this B8 as the matched rear damper for that job, aimed at sharper handling and a more purposeful stance without giving up gas-pressure control. For buyers chasing track-day or spirited-street lowered setups (MK7 GTI rear shock upgrade, Golf R lowering spring damper, B8 Performance Plus rear for MQB), the choice is between a valved, manufacturer-matched unit and a generic budget shock that was never tuned for a lowered ride height.
Per the manufacturer, this part covers 2015–2019 Audi A3 Quattro, Golf R, and Golf SportWagen; 2015–2020 A3 and S3; 2015–2021 GTI and Golf; 2016–2018 A3 Sportback e-tron; 2016–2021 TT Quattro and TTS Quattro; 2018–2021 TT RS Quattro; 2017–2019 Golf Alltrack; and 2019–2021 Arteon. Confirm your model year and rear suspension setup against the manufacturer's fitment tool before ordering. Plan on a rear pair for a full axle and verify spring-perch compatibility with your lowering springs.
The manufacturer lists coverage from 2015 through 2021, depending on the model. The Audi A3 Quattro, Golf R, and Golf SportWagen run 2015–2019, the A3 and S3 run 2015–2020, and the GTI and Golf run 2015–2021. Check the specific model year against the manufacturer's fitment list before ordering.
The manufacturer designs the B8 Performance Plus to pair with aftermarket lowering springs. It is built as an upgrade for lowered or sport-suspension cars rather than as a stand-alone change for a stock ride height.
