Mast Extension Chinook US CUP aluminum

Mast Extension Chinook US CUP 

RDM (reduced diameter) and SDM (standard diameter) in multiple lengths

Call or email with any compatability questions.

The Chinook Sailing Aluminum US Cup Extension uses custom alloy and bell shaped tubing to provide the best weight to strength ratio available in aluminum construction. The new, easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.