Here is my write up/eval on the Apex bars.
Picked them up for $189, they are now $219.
Needed a 36 mm socket $15 for the center steering nut
need a Torx 55 $4, for the bar end weights
You will also need a torx 25, 15 and 8, and a variety of others so a complete set of torx bits should be in your repetoire
Overall the Apex bars are very well manufactured. They are nice and solid and very adjustable, but they do have some fitment issues on the s1k which are noted below.
Removal of the stock clip ons is not that bad. You have to remove the top triple tree with the 36 mm socket. Torque to 88 ft/lbs, 120 nm when you put it back on.
Loosen the pinch bolts that hold the triple tree to the fork tubes, clip ons and the bolt for the brake reservoir
The clutch and throttle sides are both held on with screws that go through the bar. These are Torx 15 (I think)
The throttle housing has small screws like the one shown (this is the clutch side - don't loosen this side) that are hard to get to. You need a torx 8 with a long narrow shaft.
I would recommend removing the top triple tree and then each clip on before trying to access the undersided torx 8 screws. Once you get the clip ons off getting to these small screws is much much easier.
Take note of the hole positions in the clip ons. They are in different locations.
You will need to reroute the throttle and wires (pics below) before putting on the Apex bars.
Once the Apex bars are on, I encountered a little problem with the fork tubes raking forward and I couldn't line up the center nut. This problem was solved by bumping the front tire up against a wall to slightly push the fork back in place. A friend helps here.
Here is where the fitmet issues were noticed, continued....