-1R kits are sprung ceramic single plate upgrades like seen in the ""-1B"" kits

focusing on reducing back pressure and featuring high-performance turbines

the Mercedes’ standard bypass valves are plastic units that bleed boost and struggle to cope with the pressure

\nThe Kompact EM Valve Series from Turbosmart takes the motorsport proven billet valve technology and adds an onboard proprietary solenoid system and internal pressure control channels for a simple plug & play valve with full OE integration and control

Extra Heavy Duty Pressure Plate

Concaver CVR1 20x10 ET20 5x112 Brushed Titanium JR21 -1R kits are sprung ceramicPCD: 5x112 ET: 20