The Karapoti geometry is where 29er mountain biking evolved and settled down into long distance race scene.  This is a tried and tested 29er geometry designed for 80-100mm suspension forks.  Rotational weight on XC tyres have got better and thats why the Karapoti fits from 2.0 to 2.4" tyres.  This geometry might look old - however it works as it has evolved over time.  The Karapoti is also available as a Pinion Gearbox Frame.