19mm in size

means the valve has no problem coping with the boost pressures produced by the AMG's turbo

Model specific valve

FPR12 Pro Series (EFI & Mechanical) available in:

Thread lenght: 28mm

Clutch Kit - Xtreme Performance Extra Heavy Duty Organic KNI20014-1AX Hub Rings 19mm in sizeThe stage 1 clutch kit uses an upgraded pressure plate with extra increased clamping pressure, combined with an organic friction disc. Stage 1 delivers substantial increases in performance and power holding capability whilst retaining near factory type driveability, and is designed primarily for high performance road going vehicles. These kits feature a high quality cover with increased clamping force compared with standard, between 40 120% depending