![Is Shimano 12-speed heading for CX? Watch Mathieu's bike being built up with new Dura-Ace - Cyclocrossrider Is Shimano 12-speed heading for CX? Watch Mathieu's bike being built up with new Dura-Ace - Cyclocrossrider](https://www.cyclocrossrider.com/uploads/5e44eb1d059efcff4317a736cd681e70.jpg)
Is Shimano 12-speed heading for CX? Watch Mathieu's bike being built up with new Dura-Ace - Cyclocrossrider
![Dura-Ace cyclocross rings are pro only, but the 39t inner ring is even more rare. Tom Meeusen's Canyon Inflight CF SLX. © A. Yee / Cyclocross Magazine - Cyclocross Magazine - Cyclocross Dura-Ace cyclocross rings are pro only, but the 39t inner ring is even more rare. Tom Meeusen's Canyon Inflight CF SLX. © A. Yee / Cyclocross Magazine - Cyclocross Magazine - Cyclocross](https://www.cxmagazine.com/wp-content/uploads/2019/10/2019-tom-meeusen-canyon-cyclocross-img_0978-cxmagazine-ay_1-750x551.jpg)
Dura-Ace cyclocross rings are pro only, but the 39t inner ring is even more rare. Tom Meeusen's Canyon Inflight CF SLX. © A. Yee / Cyclocross Magazine - Cyclocross Magazine - Cyclocross
![Amazon.com : SwishTi Titanium Road Cyclocross Gravel Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s use (Red) : Sports Amazon.com : SwishTi Titanium Road Cyclocross Gravel Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s use (Red) : Sports](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61kVM-xX5rL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : SwishTi Titanium Road Cyclocross Gravel Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s use (Red) : Sports
![The Shimano Dura Ace 9000 crankset has the not-yet-available Dura Ace 'cross rings with a 46-39 combination. Note that these are not the hollow machined outer chainrings like the versions that come The Shimano Dura Ace 9000 crankset has the not-yet-available Dura Ace 'cross rings with a 46-39 combination. Note that these are not the hollow machined outer chainrings like the versions that come](https://www.cxmagazine.com/wp-content/uploads/2015/02/jonathan-page-2015-cxmagazine-ayee-20150112-IMG_5718nats2015-5718.jpg)