Bike:Cannondale Badboy(MTB/HYBRID)!!!!!
Will a 175mm shimano 105 triple splined 5505 crank,
A shimano Lx splined bottom bracket
and a shimano Lx 9spd cassette all fit and work on my bike?And will any reasonable shimano chain work too?????
Any help will be great

Road splines on the bb I think are different to those on a mtb BB, so you'd need the road BB, which may or may not fit in the frame.

yes
yes
yes
yes

Why in Gods name would you want to put a Road crank onto a mountain bike??... I mean you CAN but when you think about the fact that road cranks arnt meant to take the abuse of a offroad ride and are lighter and speed orientated why would you want to??

i just hope your either a light person or your going for a more road orientated ride

That fact that he has a BadBoy should tell you that!

M@ is right actually. The splines on a road chainset are not the same depth as those of an MTB chainset, with the exception of the old XTR splined BB's. So you would have to use a 105 splined BB or similar- which i believe only come in a 68mm shell width.

Apart from that it should work, may be worth checking how close the big ring is the chainstay before you start doing it though. Probably need a road front mech for it to work properly too.

Phew!

IT wont work. The crank arms will hit the chain stays because they have a lower Q factor and the big ring will also hit even using the longest road bb (118). You can get away with a 48 tooth ring on your mtb c-set

Ben should know, retchid cannondale mechanics!

Yes they will fit, I have a Bad boy and got a larger chainset fitted when I bought it, 48, 38 and 28 rings with 175 mm cranks. I only use my bike for road use and training on, its more comfortable than my specialized road bike. So you should have no problems.

Thats a non-compact chainset, not a road chainset. Different things.

Ben Instone is a trained cannondale mechanic, who runs a shop fixing them, he ought to know! You could probably fit an MTB chainset and get some huge rings for it, not sure about a 53/39 though.