IPD Competition Plenum Porsche 981 Boxster Spyder-Cayman GT4 NASA Discount The heart of the kit

The heart of the kit consists of monoblock aluminium calipers

X-Cool Silver draws heat from the skin to cool the driver

The kit is typically used along with the CMS Performance C8 Harness Bar or Deluxe C8 Harness Bar

the VX1R starts as a one-piece monoblock forging

IPD Competition Plenum Porsche 981 Boxster Spyder-Cayman GT4 NASA Discount The heart of the kitIPD Competition Plenum for Porsche 981 Spyder GT4 Once again, Porsche left the door open for engine performance improvements with the 981 Boxster Spyder and Cayman GT4. Using the same factory intake found on the less powerful 981 S and GTS models, despite using the 911 Carrera S 3. 8L engine, the intake's 74mm throttle body limits power and torque to keep the 981 from treading too close to the 911. As a result, Porsche's 991 Carrera S delivers 420 HP