Which Scott frames use the IDS 2 142/RWS12 dropout hanger?

The Scott Dropout Hanger Rightside IDS 2 142/RWS12 is the genuine replacement hanger for Scott frames built around the IDS 2 dropout system, which covers the Scale, Spark, Genius, Contessa, and Big Ed platforms along with their E-bike counterparts. Despite the 142 in the name, the same hanger serves frames running 12x142, 12x148, and 12x197 thru-axle spacing, because the RWS12 interface is shared across those widths. This is the right side piece only, meaning the drivetrain side where the derailleur mounts. Scott catalogs it under part numbers 219577 and 219574, and it ships with its screw and axle cap.

A derailleur hanger is engineered to be the weak link on purpose. When the derailleur takes a hit from a rock, a crash, or a shift into the spokes, the hanger bends or breaks so the frame does not, and a bent one is the single most common reason shifting refuses to index no matter how much barrel adjuster you feed it. Because hanger fitment is model specific and rarely interchangeable between brands or even between frame generations, compare this part against your existing hanger before installing rather than going by the model name alone. Keeping a spare in the workshop or the travel kit is the difference between a two minute repair and a ruined weekend.