JB4 Tuner for 2025+ Toyota 4Runner 2.4L Turbo (BETA) Alpina B5 (F10/F11) laser-cut heat shield to block

laser-cut heat shield to block hot engine air and allow cooler

and reliable performance

Looking for a way to mount your Dragy for the most accurate results

Maximized Airflow Efficiency

JB4 Tuner for 2025+ Toyota 4Runner 2.4L Turbo (BETA) Alpina B5 (F10/F11) laser-cut heat shield to blockThe JB4 PRO is the newest, most advanced and highly featured tuning system available for your 2025 Present Toyota 4Runner 2. 4L. Power gains are up to 60hp to the wheels (75hp crank) on a completely stock car on pump gas, gains with bolt on parts, higher octane, E85 mixtures are even higher. The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other 4Runner tune.