Replacing Ultegra R8000 'long cage' derailleur (crash repair advice) 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 &amp; bruises + massively damaged ego) but the bike is damaged.

Fortunately it went down on the handlebars &amp; rear derailleur, the bar tape was damaged &amp; 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 &amp; 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?
The Evans site is in error. Generally road derailleurs come in SS (short) and GS (medium) versions. The SGS long types are found in MTB groups.

Your derailleur may be scraped up but not bent and still servidable, the derailleur hanger typically gets bent in a crash which saves the derailleur. 

My experience of crashes where I've gone down on my side is the frame is fine as impact is taken by the bar, shifter, pedal and derailleur. Going over the bike looking for issues is obviously a good idea. I'd check the shifter, bar and stem alignment in particular.