Nissan Skyline R34 GTR Rear Exhaust Outlet Extension Down Pipe RB26DETT

The Nissan Skyline R34 GTR Rear Exhaust Outlet Extension Down Pipe is a genuine OEM component designed for the rear turbocharger in the RB26DETT twin-turbo system. Constructed from high-grade welded steel, this factory down pipe channels high-temperature exhaust gases from the rear turbine housing into the front crossover pipe, ensuring smooth, balanced flow between both turbos. Its precision curvature and internal flow path are engineered to minimize turbulence and backpressure, allowing the twin-turbo layout to deliver faster spool-up, improved throttle response, and consistent power delivery throughout the rev range.

Beyond performance, this down pipe plays a critical role in managing exhaust temperature and emissions control. The upper threaded bung accommodates the factory Exhaust Gas Temperature (EGT) sensor, allowing the ECU to monitor post-turbine temperatures for optimal fueling and boost safety. The lower bung houses the oxygen (O2) sensor, ensuring precise air-fuel ratio adjustments and efficient catalytic converter operation. Together, these systems protect the RB26DETT from excessive heat and maintain smooth drivability even under high load.

Suitable for both V-Spec and non V-Spec models, this rare Nissan Skyline R34 GTR Rear Exhaust Outlet Extension Down Pipe is ideal for authentic restorations or high-performance rebuilds where maintaining OEM quality and function is essential. Terra Firma Automotive proudly offers limited remaining stock—ensuring your R34 GTR retains its legendary factory precision, reliability, and balance.