They have been heavily involved in mountain biking in New Zealand since 1984, and in publishing books about cycling and cyclists.
Paul organised the first national mountain bike race in New Zealand in 1986 – the Karapoti Classic.
From 2001 to 2006 the Kennett Bros coordinated a forest revegetation project at Ōtari-Wilton's Bush, in which 40,000 trees were planted over a five-year period.
The Kennett Bros helped organise the 2006 Rotorua UCI Mountain Bike & Trials World Championships.
In 1991 the Kennett Bros wrote the first edition of Classic New Zealand Mountain Bike Rides, a national guidebook, which became a best seller.