If you’re still looking, I have a Mychron4-2T with the data key, RPM sensor, infrared lap sensor and a Y-cable for two sensors. Asking $225 + shipping. PayPal preferred.
Also have a GPSO5 GPS lap sensor, an AiM infrared beacon and an M4 eBox with an axle sensor. $320 + shipping for everything.
LAD Specialties customer / tony kart / rotax / kt100