Big News: the WCM-Blata team is racing with Bos!
  Sandro Cortese Team Kiefer Bos Castrol Honda
Sandro Cortese, Team Kiefer Bos Castrol Honda is racing with BOS 2005 Grand Prix 125.
  Ajo Motorsport GP 125
Tomoyoshi Koyama # 71 is riding for the Ajo team with the Honda 125
 

Dirk Heidolf Team Kiefer Bos Castrol Honda
Dirk Heidolf, Team Kiefer Bos Castrol Honda is racing with BOS 2005 Grand Prix 250.
  Wilbers racing
This team is racing in the German superbike with their Suzuki K5 GSXR1000.
 

Team Kawasaki Docshop Racing
Kai Borre Anderson and Jimmy Lindström are racing for Team Kawasaki Docshop Racing with BOS in the Supersport 600 and Superbike.
  Suzuki Bridgestone GSXR Cup 2005
Suzuki Bridgestone GSXR 1000 Cup is racing in 2005 again with BOS exhausts.
  Suzuki SM 400 Cup 2005
This new super motard cup is also sponsored by Bos.
  Dutch Racing Teams