Chinook Tendon 1-Bolt US Windsurfing Mast Base
$95.00
A perennial favorite at Big Winds, with decades of proven performance and staying power.
8 in stock
DETAILS
The Chinook Tendon 1-Bolt US Windsurfing Base blends efficiency and durability. The tendon provides a positive, direct transfer or rig power into a board, as well as shock absorption for a smooth ride through chop, and for jumping. A perennial favorite at Big Winds, with decades of proven performance and staying power.
COMPATABILITY
The Chinook Tendon 1-Bolt U.S. windsurfing mast base is compatible with most modern U.S. extensions, but best matched with Chinook extensions displayed below.
WHICH MAST BASE IS BEST?
1-Bolt or two? Tendon, rubber or mechanical joint? Euro-Pin or U.S. Cup? Find side-by-side comparisons of each windsurfing mast base system in this mast base guide. Pros, cons, and who benefits most from each — it’s all there!
Related products
Duotone iBase 2.0 Plate 2026
Chinook Double Sail Pulley
Chinook Windsurfing Skinny Carbon Mast Extension
Dramatic weight savings for RDM mast users. Featuring the Power Haul 6:1 pulley and cleat assembly, and an easy to adjust adjustment collar. Available in US Base and Euro Pin constructions.
Chinook Tendon Upper Joint Euro Pin Windsurfing Mast Base
Chinook Rubber 2-Bolt US Windsurfing Mast Base
The rubber joint offers great flexibility and the smoothest ride on the water thanks to its shock absorption. Chinook's two-bolt mast bases are two separate pieces, and include Chinook's Quick Release Base Plate.
Chinook 2-Bolt Quick Release Windsurfing Base Plate
Chinook Polyester 5/32″ (4mm) Downhaul and Outhaul Line
DESCRIPTION This is the standard-sized 5/32″ (4mm) Chinook polyester line, used in all aluminum Chinook extensions and booms. Accept no
Chinook Pro-1 Alloy RDG Windsurfing Boom
RDG stands for Reduced Diameter Grip. Exceptional torsional rigidity. Features 60 cm tail-piece to span a wide range of sail sizes. Fits both standard and reduced diameter masts perfectly. One year warranty.
Sizes 150 and smaller ship for $49 in the mainland U.S.

What does this Gorge graphic mean?





