While at the local REI I spotted On-Guards 'Akita' cable 15". I'd been looking for a longer, but not too long cable to replace that not quite long enough and really dinky factory one.
The 15" model is only $4. Its much more substantial than that stocker, but still fits under the seat fine. It's also long enough that it's not a puzzle to get it around the helmet and in place.
Thought I'd share.
i bought a master lock retractable combination cable lock and just lock the helmet to the handlebar at the riser. That was a cheap solution and is easier than taking the seat off to get my helmet.
Free gun locks from your local Police Dept. Lock helmet to the frame [thumbsup]
I leave my lid on top of the bike unlocked.
Works great.