I know this is OT, but I love that set up. I love pink bikes, have one myself. I also have those grips, but am currently running drops, so have yet to use them. dig it tho.

ok, on topic, I have an insanely short stem on my bike, with some rise, I'll go see if I can find the specs on it, but as far as ridability... I went from a 130 to what I have now. I'm not sure what "twitchy" means, but the steering seems less responsive. I can't just move my arms slightly anymore to guide the bike. but, on the positive, I don't feel like magilla gorilla riding the bike anymore.

oh, ok, here's the stem.

it's ugly as all hell, even on the bike. i dont care at all though, it's made my bike so much more comfortable to ride... worth it.
specs:
The Profile Design Boa mountain stem constructed of 6061-T6 and is available in Black or Silver.
Threadless 6061-T6, height = 50mm, 185-277 grams
Bar Clamp Diameter: 25.4 mm
Steerer Tube: 1-1/8" Threadless
Weight: 277.0 g