Born in Thames, New Zealand, Reihana started playing in the National Provincial Championship level with Waikato in 1996 and led them to two Ranfurly Shield victories out of three.

After not renewing his contract with the New Zealand Rugby Union in 2002, Reihana managed to get an overseas contact with Premiership side the Northampton Saints.

Reihana was scheduled to return to New Zealand rugby after his stint in Europe,[2] but it did not materialise as he decided to stay in England citing personal reasons.

This was announced over BBC Radio Northampton during the final Aviva Premiership game of the season, against Leeds Carnegie, as Bruce Reihana joined the field.

In June 2021 he left Clifton to join Montpellier in the French Top 14[7] and was part of their title-winning staff in the 2021–22 season[8] He is currently the attack coach for the ProD2 team CA-Brive.