Are there any (or any good) stems with drop (i.e. negative rise) greater than 17 degrees? I’m looking to get a bit lower in front and seem to at the limits of what I can do with my current frame - all my spacers are out (i.e. on top of stem), running a -17 degree stem, pretty flat/low aerobars (Pro Missile). I’ve seen some 30 degree stems, but they don’t seem to be designed to run upside down.
slam it!
Profile Design Aris in -25
Remove the dustcap off the headset and slam the stem to the bottom, remove all spacers from below the pads on the Pro Missile bar… if you’ve done all that and still can’t get low enough then I’d recommend a smaller frame…
Bontrager Race Lite stem also comes in -25 and -40 degrees
http://bontrager.com/model/07828
Edit: add “-” sign for clarity
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The specialized stems can be run in a number of different configurations. They have an shim system that allows for this.
Specialized CLP +/- 17 can shim down to a -21.
KW
origin 8 has 35 degrees
and dimension
http://aebike.com/parts-accessories-catalog-qc30/stems-t149.htm
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Bontrager Race Lite stem also comes in -25 and -40 degrees
http://bontrager.com/model/07828
Edit: add “-” sign for clarity
Any problem running those upside down? That looks like some of the other “high rise” stems I’ve seen, some of which are explicit in saying they’re only for rise. Bontrager doesn’t seem to say that, just doesn’t advertise the angle as +/- .
I haven’t used one (yet), but that’s what the flip-flop term is implying.
Here is a website that uses the “+/-40-degree” notation for you: http://trekbicyclestores.com/product/bontrager-race-lite-stem-40-degree-rise-76239-1.htm?utm_source=google_merchant_center&utm_medium=organic&utm_campaign=fathom
Have fun 
Cheers,
Cathy
Profile Design’s Aris stem would be an option.
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I’ve got two Ritchey stems that are -30° one of them is on my 29er
I also have two adjustable Ritchey stems that are at -45° right now on my tri bikes.
jaretj
Thanks for the follow ups - seems like several options to look at. Now if I could recall my trigonometry I could probably figure this out, but with a lower angle should I change the length? My intuition says I should go with a slightly longer stem (I run a 100mm at -17) - flatter back = more forward. But I don’t know if going from -17 to say -30 or -40 will make enough of a difference.
Thanks for the follow ups - seems like several options to look at. Now if I could recall my trigonometry I could probably figure this out, but with a lower angle should I change the length? My intuition says I should go with a slightly longer stem (I run a 100mm at -17) - flatter back = more forward. But I don’t know if going from -17 to say -30 or -40 will make enough of a difference.
length stays the same, if not shorter. i would know: went from 130mm 3T -17 stem to a 130mm Aris -25 stem and felt stretched out. The 120mm Aris stem was just right.
It kind of varies. Because as echappist points out, going lower may otherwise effect how you feel on the bike. Also, some stems are measured c-c, some are measured for “reach”, etc. My PD Aris length appears to be over 100mm(closer to 106mm), but looks to be close to a 100mm reach horizontally. Hope this makes some sense.
Thanks. I know the solution will ultimately be that I’ll have to try out a few different options, but at least I’ll have a starting point.
BTW, I found an online angle calculator & if my calcs are right, taking into account a 72.5 degree head tube angle, the -17 puts the effective stem angle just a shade above level (i.e. 90.5 angle relative to a vertical). Assuming the length is 100mm, this gives a vertical rise of about 1mm to the end of the stem. Swapping to a -25 stem makes this a 1.3 cm vertical drop, -30 gives a 2.2 cm drop, -40 gives almost a 4 cm drop. My guess is a -25 will do, but I may go -40 & play with spacers too.
Thanks - looks like that’s what I’ll probably go with.
Stem length/angle calc
Salsa makes a nice reverse (115/65-degree) stem that’ll give you just a bit of drop. If you’re interested in a 120mm I have one for sale, pm me off-list.
Another “up” for Dimension, because they’re cheap! I have one that’s, I think, -25 degrees.
If anybody cares, here’s another on-line calculator that’s easy to use:
http://www.ttbikefit.com/stemcalc.html
Gives the same results I got via good old trig.