Shimano Ultegra 11spd STI clamp

[John Edmondson]

Hi I recently removed my Right Hand Shimano Ultegra 11spd STI lever (6800 model i think).

Rather than the usual nice and deep 5mm Allen key clamp bolt that ALL my over shimano levers use - the clamping bolt was star shaped and fairly superficial in depth (why change...!!). So i dug out my torx keys --- the T30 was too big and T27 had a bit of play.

I removed the clamp bolt with the T27 (like a fool knowing it wasn't quite right..) -- when I was re-tightening the clamp I got it on nice and firm but have rounded it slightly.

Am I missing something? Torx don't make T28 or T29 sizes do they? What should I be using to remove this bolt??

Any help would be greatfully recieved!! Thanks

 

[simon.r]

5mm Allen key works for me on Ultegra 6800. I know this because my lever slipped down on a recent ride and I had to tighten it up by the road side.

 

[User33236]

Shimano manual states you use a 5mm Allen key.

http://si.shimano.com/php/download.php?file=pdf/dm/DM-ST0002-04-ENG.pdf

 

[John Edmondson]

Cheers guys. I've ordered a replacement clamp bolt which is 5mm Allen so all sorted but pretty frustrating at the time..!