These are genuine a Chinook Mast Extension Collar for all Chinook windsurfing mast extensions...available from bigsurfshop.com.
Mast extension collars can get misplaced at the beach or when being transferred from gear bag to gear bag...it happens. These are the genuine Chinook Mast Extension Collar replacements for all Chinook windsurfing mast extensions.
Collars are available for the Reduced Diameter Mast (RDM) and the Standard Diameter Mast (SDM). Choose your style and size from the drop down menu.
Fits both carbon and aluminium Chinook mast extensions.
Please feel free to ask us if you are unsure about which collars you need.