Brad from Superbike supply has them. I just got one from him myself.
http://www.superbikesupply.com/index.php?method=ProductList&GroupsId=1634
Description: HRC quick action throttle kit to fit the CBR1000RR.
Included in kit:
1 x throttle housing tube
1 x throttle housing, top
1 x throttle housing, bottom
1 x throttle cable, front
1 x throttle cable, rear
2 x screws
This kit uses a 1/6 turn quick action to help you get on the power faster and prevent fatigue.
Direct replacements for the original throttle parts.
http://www.superbikesupply.com/index.php?method=ProductList&GroupsId=1634
Description: HRC quick action throttle kit to fit the CBR1000RR.
Included in kit:
1 x throttle housing tube
1 x throttle housing, top
1 x throttle housing, bottom
1 x throttle cable, front
1 x throttle cable, rear
2 x screws
This kit uses a 1/6 turn quick action to help you get on the power faster and prevent fatigue.
Direct replacements for the original throttle parts.