24 + 1 AEM Trigger Disk – RWD SR20/R34 RB

24 Tooth Cam Angle Sensor Disk – Type 2 (50mm ‘D’ Shaft)

Direct replacement trigger disk for stock Nissan cam angle sensors. Fixes triggering issues with aftermarket ECUs at high RPM.

The Problem: Factory Nissan CAS uses a 360-tooth optical trigger disc. Works ok with factory ECU and engines, but the super fine OEM trigger often causes trigger errors or timing scatter with aftermarket engine management – particularly around peak torque or high RPM. The fine teeth are too close together for reliable triggering on modified engines

The Solution: This 24+1 trigger disk from AEM electronics is a quick easy fit, requires no wiring modifications (except Haltech users might have to swap the 2 triggers) and gives your aftermarket ECU a better, more  stable trigger signal across the full RPM range. instead of 1 tooth every 2 crank degrees, you have 1 every 30.

Type 2 Specifications:
50mm diameter
‘D’ shaft
24+1 tooth pattern

Fits:
Most RWD SR20 engines (SR20DET, SR20DE)
Most R34 RB engines (RB25DET, RB26DETT)

Important: Check your original CAS disk before ordering – measure the diameter (50mm) and confirm the shaft is ‘D’ shaped.
If you have a round shaft, you need Type 1. If you have a distributor setup, you might need Type 3.

Installation: You’ll need to reconfigure your ECU trigger settings to 24+1 pattern. Consult your ECU manual or tuner for the correct settings.
MaxxECU Trigger setting example found here

What’s Included: 1x 24 Tooth Trigger Disk (Type 2)

Verify your CAS hub matches the disk profile before ordering – check product photos.
Requires aftermarket ECU configured for 24-tooth cam trigger pattern

NZ Wiring Stock: We list the item’s we stock in Petone, Wellington