Today I did the unthinkable and crashed my pride and joy, a 2018 Specialized Roubaix comp. It's completely my fault I was commuting to work and in my pre caffeine state rode through what I thought was a puddle but was actually a massive patch of black ice.

I went down straight away, I came off the bike and we both landed separately. I'm ok (cuts & bruises + massively damaged ego) but the bike is damaged.

Fortunately it went down on the handlebars & rear derailleur, the bar tape was damaged & and the rear mech is bent and scraped badly.

I've checked the frame for damage and it looks ok, I'm going to give it another inspect after a thorough wash but I'm chancing that the frames ok.

I'm going to repair the bike, since all thats really damaged is the rear mech however I'm unsure about sourcing a replacement.

I bought the bike from Evans cycles, they state the spec as: Shimano Ultegra 8000, long cage, 11-speed

However wherever I look online (Shimano's own site), it looks like they only sell a short & medium cage derailleur.

My cassette is 11-32 so I do require a longer cage. The medium cage derailleur does state it can take a 34T max so I'm going to order that.

My question is, why would the bike specs specify components that don't exist? Did a long cage ultegra derailleur ever exist (the bike is 2018 spec).

Are there any checks you guys do or 'must replace's after crashing out (I usually buy a new helmet for example). I'd say the crash was a more intense version of everyone's first crash when learning to ride clipless pedals at traffic lights (a straight drop).

I usually do all of my bike maintenance myself (minus the hydro brakes), would you recommend taking it to a shop for a once over or is that just a faster way to part with my money?