Cycling-Related Strength & Conditioning

Bit strong to say "no" there is obviously some. Maybe minute and inconsequential, but theres gotta be some. Even for long distance road cycling.

I for one can feel strong recruitment of glutes, especially when climbing since I started weight training. I remember reading an abstract of some research which said that the best road cyclists had superior glute recruitment. If I remember where I saw it Ill post it.

Also the leg-to-trunk rigidity (or "core stability" if you like) built from squatting would surely make pedalling at least in some situations, more efficient.

why must there be some?

at most in an untrained person there might be the slight benefit of actually exercising

as for the stability issue the forces involved in endurance cycling are so low its really not a big factor, some basic core work like planks will more than take care of this

if you want to become more efficent on a bike, ride a bike! its really that simple. the neural cross over from weights just wont effect pedalling efficency

the only possibly benefits I can see are to correct muscle imbalences from poor posture/previous injuries. Hypertrophy really isnt a benefit for endurance cyclists

as for glute recruitment, yes thats correct, however that doesnt mean their superior technique can be copied through weight lifting. The chances are you "feel" you glutes more now after weights due to either having better body awareness or from some residual fatigue/doms