Text Kill Switch Cap

The MPT magnetic kill switch cap is compatible with Lionelli/Jitsie kill switches and offers several advantages over the stock cap.

The cap's lip allows the kill switch to activated using your thumb. This is both a safety feature and a convenience. It's a safety feature if you can't move your arm (for any number of reasons) to pull the cap away from the kill switch. It's a convenience to be able tip the cap up enough to kill the engine without completely removing the cap from the switch. This is handy when stopping to chat or waiting in line at the start of a section.

Here's a review by Tom Trantow of Trials Progression.