Going bigger
"Works as it should like all Shimano parts. I got the GRX rear changer to improve shifting on a wider range cassette than the Ultegra can usually handle."

Overall rating: 4.5 / 5 from 2 reviews.
Review topics: [].
"Works as it should like all Shimano parts. I got the GRX rear changer to improve shifting on a wider range cassette than the Ultegra can usually handle."
"works primo. good cassette range"