GReddy 89-02 Nissan Skyline GT-R RB26DETT BNR32/BCNR33/BNR34 Adjustable Cam Gear - Exhaust13523302 RB26 Adjustable Exhaust Cam Gear Designed specifically to manually adjust the RB26DETT exhaust valve timing, this GReddy adjustable cam gear can help optimize engine performance, while still allowing room for the factory RB cam position sensor. It features a billet aluminum CNC machined, laser indexed, five bolt slotted design. Increments are noted in 2 degree intervals for both 20 degrees of advance and 20 degree of retard cam timing. The