The LM2 is a handheld type device (not for permanent install). For a gauge on your bike your best bet would be the MTX-L product from innovate - it's the most streamlined solution. Their slightly older LC1 (which they still sell) is to be avoided - I've had to warranty many of these between my own cars and customer cars. The MTX-L is supposed to be a much more robust unit and all of the electronics are built into the gauge housing so you don't have a lot of electronics to stuff somewhere on the bike.
However, if I was spending money on a direct instal wideband AFR gauge, I would buy an AEM unit, they have a better track record and seem to be more durable, IMO.