Career
Team Discovery (2005–2007)
Beppu turned professional with Discovery Channel in 2005, and stayed with them until 2007. On 28 September 2007, the Skil–Shimano professional cycling team announced that they had signed Beppu for a one-year contract. Skil-Shimano years (2008–2009)
On 26 July 2009, Beppu, riding for Skil–Shimano, finished 112th out of 180 riders in the 2009 Tour de France.
He also placed 8th in stage 3 and 7th in stage 19.
Along with Yukiya Arashiro, he became the first Japanese national to complete that race. Kisso Kawamuro and Daisuke Imanaka had started but not finished the race before.
RadioShack (2010–2011)
On 23 November 2009, it was announced Beppu had signed to ride with Team RadioShack for the 2010 season. Later it became clear that Beppu still had one year left on his contract with Skil-Shimano, so he had to buy himself out of the contract.
In February 2010 he finally started races with RadioShack at Omloop Het Nieuwsblad and Kuurne-Bruxelles-Kuurne.
GreenEdge (2012–2013)
In October 2011, it was announced that Beppu would ride for the new Australian based team GreenEDGE. He participated in the men"s road race at the 2012 Summer Olympics and finished in 22nd place. After two years with the team, Beppu left at the end of the 2013 season to join Trek Factory Racing.