Complex sentence: The Kona/IMBA bowling party, held at Interbike from 1998 until 2007, raised money for NEMBA, a New England IMBA-related advocacy group; to help purchase a large area for mountain biking; to funding the KONA/IMBA freeride grants.
Split into simpler sentences: The Kona/IMBA bowling party, held at Interbike from 1998 until 2007, raised money for NEMBA, a New England IMBA-related advocacy group. Its purpose was to help purchase a large area for mountain biking by funding the KONA/IMBA freeride grants.