Shimano 11-Speed 1.85mm Low Spacer by Shimano

Product Information

string(104) "media/image/product/129250/xs/sram-gx-eagle-kassette-12-fach-full-pin-xg-1275-10-50-zaehne-schwarz~2.jpg" string(104) "media/image/product/129250/sm/sram-gx-eagle-kassette-12-fach-full-pin-xg-1275-10-50-zaehne-schwarz~4.jpg" The rounded edges on the top of the disc minimize the risk of injury and comply with the guidelines of the World Cycling Union UCI. Another advantage is that they make it easier to install the wheel, because the rounded top prevents tilting in the brake caliper.

However, I realized that on this 2x11 speed Di2 drivetrain, the cross-chaining is electronically limited. Basically, if you are in the small 34T chainring, the rear derailleur does not allow you to shift to the top two gears on the cassette (11T and 13T in this case). The reason is to prevent chain touching on the large chain ring due to the cross chain angle, and also to ensure that the chain capacity of the rear derailleur is not exceeded. string(122) "https://r2-bike.com/media/image/product/129250/lg/sram-gx-eagle-kassette-12-fach-full-pin-xg-1275-10-50-zaehne-schwarz.jpg"Alternatively, should I consider a normal freehub (non-XD/XDR) and get an 11-42 speed cassette. That's possible right? Does the single tooth make a large difference? string(965) "{"xs":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/xs\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~3.jpg","size":{"width":124,"height":93},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"sm":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/sm\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~3.jpg","size":{"width":280,"height":210},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"md":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/md\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~3.jpg","size":{"width":400,"height":300},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"lg":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/lg\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~3.jpg","size":{"width":1000,"height":750},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"}}" string(121) "https://r2-bike.com/media/image/product/160284/sm/dt-swiss-freilaufkoerper-fuer-sperrklinken-system-sram-xdr-road~255.jpg"

string(108) "https://r2-bike.com/media/image/product/86793/xs/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~3.jpg" string(97) "media/image/product/160284/lg/dt-swiss-freilaufkoerper-fuer-sperrklinken-system-sram-xdr-road.jpg" string(107) "https://r2-bike.com/media/image/product/155502/md/sram-gx-force-1-kassette-11-fach-xg-1175-10-42-zaehne.jpg"I'm a mountain biker and don't have any experience with the road side of things. Figure I'd use a 1x11, 42/10-42 drivetrain, but I'd like the ability to switch down to a smaller cassette (can you do that on an XD driver?). string(965) "{"xs":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/xs\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~4.jpg","size":{"width":124,"height":93},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"sm":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/sm\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~4.jpg","size":{"width":280,"height":210},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"md":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/md\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~4.jpg","size":{"width":400,"height":300},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"},"lg":{"src":"https:\/\/r2-bike.com\/media\/image\/product\/86793\/lg\/sram-gx-rival-1-kassette-11-fach-xg-1150-10-42-zaehne~4.jpg","size":{"width":1000,"height":750},"type":2,"alt":"SRAM GX | Rival 1 Cassette 11-speed XG-1150 | 10-42 Teeth"}}" string(155) "DT Swiss wheels and hubs stand for high-end bike products, for MTB, road bike, Gravel and Enduro. Everything your heart desires can be found at r2-bike.com"