hi Gents, I've noted from other posts that my 2008 sportster uses both conventional "torx" bolt heads, as well as the rarer "torxplus". Can anyone tell me whether all of them are torx-plus, or whether there are some of each type. If the latter, then which ones do I need in the "torx-plus" type? Is it just the larger ones? I have a set of torx bits going up to about T27 or somewhere, but there are other much larger ones e.g. rear shockies, fork triple clamps.

Hi Jim, I'm probably not going to answer your question, however, you did pique my interest in what the hell the difference between the two types of torx and torx plus bolts might be, and you are not the first to post this question. It would not surprise me that we might have both types on our bikes, given that my Fatboy Lo has both metric and imperial Allen bolts on it (I am first owner so I know it came from factory like that). Anyhow, I digress, I did a search on the difference between the two and Wikipedia came up with the below description of the torx plus bolts :-

Nobody has answered my question. I guess very few people know. I know one guy who told me that he just used Torx on everything and they were "a bit loose". Something like the triple clamps on the front forks - I would think people would want to make sure they were done up securely.

Jim, By saying Torx Plus, are you referring to Torx antitheft, ( the ones that have the nipple in middle) , I bought a set of each.  Only because they were on special at Repco. But could probably get away with just the anti theft Torx keys

I've made the mistake of using the security versions on non sec screws and had the end shear off. 

Bugger. Didn't know there was two types. Same problem when some seem to not quite fit correctly. Looks like Repco might have a few customers today.

Funny how they call them "Torx" bolts, but in places where they need real torque they use hex bolts.  When I was installing the detachable mounts for my back rest, I noticed the default bolts were torx but the replacements were hex.

bit more research,ribe are also known as polydrive,the bolts /screws they fit are common in european cars.

Sometimes I'm a barstead but most of the time I'm a learning barstead. I have taken the Torx shit on all parts I dislodge from Black Bitch and replaced with mr.Philips s/s/washers to suit. and locking tite if required bugga Mr.Torx.