Have any questions?
We’ll help you select the right timing and control solution for your facility.
Autocross & Solo — Package
Club Day on a Budget
The essential AC4 hardwired autocross kit — timer, sensors, emitters, cables, and power cord. Everything you need to run a club day.
Built For
SCCA regions and club autocross programs
The AC4 hardwired system is the classic club day setup: dual 100ft track cables (expandable to 1000ft), simultaneous car timing, and rock-solid 0.001-second accuracy. No wireless to configure, nothing to charge overnight.
Add an 8" LED display and RA Command AutoCross as optional adds when your program is ready to grow.
Package Price
$1,778
Optional adds: 8" digit LED display and RA Command AutoCross. Longer cables available on request.
What's Included
Everything in this package
Model 3850B
AC4 Hardwired Autocross Timer
Hardwired autocross timer console.
View Details
Model 5140 x2
5140 Single Beam Track Sensor
Start and finish sensors.
View Details
Model 5040 x2
5040 Single Beam Emitter
USB rechargeable IR beam emitters.
View Details
Qty 2
100ft Track Cables
Two 100ft hardwired track cables.
View Details
12VDC Power Cord
12VDC power cord.
View Details
FAQ
Questions about this package
How much cable do I need for an average autocross?
Most club autocross start/finish layouts need 100–300ft between start and finish sensors. The AC4 supports up to 1000ft with longer cables — we can include extended cable in a custom quote.
Can I upgrade from this to the wireless AC4?
Yes. The AC4 hardwired and wireless share the same console, software, and sensor infrastructure — you can move up to the Club Day Premium wireless setup later without replacing the other components.
Need a display or software added?
Tell us whether you want an 8" LED display, RA Command AutoCross, or longer cables. We'll add them to a custom quote.