![Brunner shifted up front with an Ultegra R8070 Di 2 front derailleur. Eric Brunner's 2019 U23 National Championships Blue Norcross Team Edition. © A. Yee / Cyclocross Magazine](https://www.cxmagazine.com/wp-content/uploads/2020/01/2019-nationals-eric-brunner-blue-u23-men-img_4763-cxmagazine-ay_1.jpg)
Brunner shifted up front with an Ultegra R8070 Di 2 front derailleur. Eric Brunner’s 2019 U23 National Championships Blue Norcross Team Edition. © A. Yee / Cyclocross Magazine
Brunner shifted up front with an Ultegra R8070 Di 2 front derailleur. Eric Brunner’s 2019 U23 National Championships Blue Norcross Team Edition. © A. Yee / Cyclocross Magazine