Yes, you can shorten the Ikea Aurdal clothes rail! Here's how I did it. See captions. : r/ikeahacks
JONAXEL white, Adjustable clothes rail, 46-82 cm - IKEA
ENHET extendable rail, white, 60-100 cm - IKEA
HJÄLPA adjustable clothes rail, white, 30-47 cm - IKEA
31-52 cm Wardrobe Rail, Extendable Stainless Steel Clothes Rail Pole with End Sockets & Screw, Adjustable Wardrobe Rail for Wardrobe, Shower, Balcony, Windows : Amazon.co.uk: Home & Kitchen
AURDAL extendable clothes rail, dark grey, 57-90 cm - IKEA
BOAXEL adjustable clothes rail, white, 20-30 cm - IKEA
IKEA Clothes Rail Adjustable Hanging Bar for Wardrobe & Closet Organizer 60-100' | eBay