{"id":22589,"date":"2025-08-03T18:29:56","date_gmt":"2025-08-03T16:29:56","guid":{"rendered":"https:\/\/www.ketos-foil.com\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\/"},"modified":"2026-03-04T14:21:43","modified_gmt":"2026-03-04T13:21:43","slug":"mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil","status":"publish","type":"product","link":"https:\/\/www.ketos-foil.com\/en\/foil-mast\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\/","title":{"rendered":"KETOS FORTRESS UHM Mast A \u201creinforced concrete\u201d mast built for Pumping (dock start), Wingfoil, and Kitefoil"},"content":{"rendered":"<h3>Available Sizes &amp; Compatibility<\/h3>\n<p>The mast is available in <strong>three lengths<\/strong>:<\/p>\n<ul>\n<li><strong>75 cm<\/strong>, <strong>80 cm<\/strong>, and <strong>85 cm<\/strong> with <strong>standard US rails<\/strong><\/li>\n<li><strong>85 cm<\/strong> version also available with <strong>KF BOX<\/strong> connection<\/li>\n<\/ul>\n<h3>Included in the Package<\/h3>\n<ul>\n<li><strong>1x 5mm neoprene cover<\/strong>, designed to fit over a fully mounted foil<\/li>\n<li><strong>2x M6 30mm screws<\/strong> for fuselage connection<\/li>\n<li><strong>4x M6 T-Nuts<\/strong> with <strong>4x 20mm screws<\/strong> for Ketos Dockstart boards<\/li>\n<\/ul>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<h3>FORTRESS Mast \u2013 Precision Meets Power<\/h3>\n<p>The <strong>FORTRESS mast<\/strong> is a sleek 13.5\u202fmm profile that delivers an <strong>incredible stiffness-to-glide ratio<\/strong>. On our test bench, it clearly outperforms the top-tier masts from leading brands in both <strong>flexion<\/strong> and <strong>torsion<\/strong>.<\/p>\n<p><strong>Designed for large-span wings<\/strong> like the 155LR, it was developed to meet the demands of heavier riders\u2014such as <strong>Patrick<\/strong>, a rider from Lake Annecy.<\/p>\n<p>A mast that\u2019s both <strong>rigid and responsive<\/strong>, with a generous chord and a refined lower section measuring just 13.5\u202fmm.<\/p>\n<p><strong>Premium construction<\/strong>:<\/p>\n<ul>\n<li>Full <strong>prepreg carbon<\/strong> with <strong>integrated stringer<\/strong><\/li>\n<li>High-performance <strong>UHM fabrics<\/strong><\/li>\n<li><strong>Klever Modular<\/strong> connection system (also available for Axis fuselages)<\/li>\n<\/ul>\n<p>We recommend pairing it with <strong>aluminum\/carbon fuselages<\/strong> for optimal performance.<\/p>\n<p><strong>Design &amp; Profile<\/strong>:<\/p>\n<ul>\n<li>Shaped and designed by <strong>Ketos<\/strong><\/li>\n<li>Unique Ketos profile, also featured on the <strong>Kulan<\/strong>, our thinnest mast at 11.6\u202fmm<\/li>\n<\/ul>\n<p><strong>Materials<\/strong>:<\/p>\n<ul>\n<li><strong>Ketos Core<\/strong><\/li>\n<li><strong>Prepreg carbon<\/strong><\/li>\n<\/ul>\n<p><strong>Manufacturing<\/strong>:<\/p>\n<ul>\n<li>Molded in a <strong>125T aluminum press<\/strong><\/li>\n<li>Production site: <strong>KETOS Factory<\/strong>, Aix-les-Bains, Savoie, French Alps<\/li>\n<\/ul>\n<p><strong>Material sourcing<\/strong>:<\/p>\n<ul>\n<li>Carbon: <strong>France or Italy<\/strong><\/li>\n<li>Ketos Core: <strong>France or Spain<\/strong><\/li>\n<\/ul>\n<p><strong>Energy usage<\/strong>: 100% from <strong>green or nuclear sources<\/strong><\/p>\n<p><strong>Local commitment<\/strong>:<\/p>\n<ul>\n<li>Over <strong>90%<\/strong> of our revenue comes from products made in our KETOS Factory<\/li>\n<li>Less than <strong>1%<\/strong> comes from products manufactured in Asia<\/li>\n<\/ul>\n<p><strong>Recommended disciplines<\/strong>:<\/p>\n<ul>\n<li>Flat: 80%<\/li>\n<li>Downwind (DW): 80%<\/li>\n<li>Wave: 80%<\/li>\n<li>Pumping, Wing, DW<\/li>\n<\/ul>\n","protected":false},"featured_media":21611,"comment_status":"open","ping_status":"closed","template":"","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","_themeisle_gutenberg_block_has_review":false},"product_brand":[],"product_cat":[1651,1126,72],"product_tag":[],"class_list":{"0":"post-22589","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pumping-mast","7":"product_cat-foil-mast","8":"product_cat-masts-en","10":"entry","11":"has-media","13":"first","14":"instock","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-variable","19":"col","20":"span_1_of_3","21":"owp-content-center","22":"owp-thumbs-layout-horizontal","23":"owp-btn-normal","24":"owp-tabs-layout-section","25":"circle-sale"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>KETOS FORTRESS UHM Mast A \u201creinforced concrete\u201d mast built for Pumping (dock start), Wingfoil, and Kitefoil - KETOS FOIL - Exceptional carbon foil since 2009<\/title>\n<meta name=\"description\" content=\"FORTRESS Mast \u2013 Precision Meets Power The FORTRESS mast is a sleek 13.5\u202fmm profile that delivers an incredible stiffness-to-glide ratio. On our test bench, it clearly outperforms the top-tier masts from leading brands in both flexion and torsion.  Designed for large-span wings like the 155LR, it was developed to meet the demands of heavier riders\u2014such as Patrick, a rider from Lake Annecy.  A mast that\u2019s both rigid and responsive, with a generous chord and a refined lower section measuring just 13.5\u202fmm.  Premium construction:   Full prepreg carbon with integrated stringer  High-performance UHM fabrics  Klever Modular connection system (also available for Axis fuselages)  We recommend pairing it with aluminum\/carbon fuselages for optimal performance.  Design &amp; Profile:   Shaped and designed by Ketos  Unique Ketos profile, also featured on the Kulan, our thinnest mast at 11.6\u202fmm  Materials:   Ketos Core  Prepreg carbon  Manufacturing:   Molded in a 125T aluminum press  Production site: KETOS Factory, Aix-les-Bains, Savoie, French Alps  Material sourcing:   Carbon: France or Italy  Ketos Core: France or Spain  Energy usage: 100% from green or nuclear sources  Local commitment:   Over 90% of our revenue comes from products made in our KETOS Factory  Less than 1% comes from products manufactured in Asia  Recommended disciplines:   Flat: 80%  Downwind (DW): 80%  Wave: 80%  Pumping, Wing, DW - Pumping Mast, Foil mast, Wingfoil mast KETOS FOIL\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ketos-foil.com\/en\/foil-mast\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KETOS FORTRESS UHM Mast A \u201creinforced concrete\u201d mast built for Pumping (dock start), Wingfoil, and Kitefoil - KETOS FOIL - Exceptional carbon foil since 2009\" \/>\n<meta property=\"og:description\" content=\"FORTRESS Mast \u2013 Precision Meets Power The FORTRESS mast is a sleek 13.5\u202fmm profile that delivers an incredible stiffness-to-glide ratio. On our test bench, it clearly outperforms the top-tier masts from leading brands in both flexion and torsion.  Designed for large-span wings like the 155LR, it was developed to meet the demands of heavier riders\u2014such as Patrick, a rider from Lake Annecy.  A mast that\u2019s both rigid and responsive, with a generous chord and a refined lower section measuring just 13.5\u202fmm.  Premium construction:   Full prepreg carbon with integrated stringer  High-performance UHM fabrics  Klever Modular connection system (also available for Axis fuselages)  We recommend pairing it with aluminum\/carbon fuselages for optimal performance.  Design &amp; Profile:   Shaped and designed by Ketos  Unique Ketos profile, also featured on the Kulan, our thinnest mast at 11.6\u202fmm  Materials:   Ketos Core  Prepreg carbon  Manufacturing:   Molded in a 125T aluminum press  Production site: KETOS Factory, Aix-les-Bains, Savoie, French Alps  Material sourcing:   Carbon: France or Italy  Ketos Core: France or Spain  Energy usage: 100% from green or nuclear sources  Local commitment:   Over 90% of our revenue comes from products made in our KETOS Factory  Less than 1% comes from products manufactured in Asia  Recommended disciplines:   Flat: 80%  Downwind (DW): 80%  Wave: 80%  Pumping, Wing, DW - Pumping Mast, Foil mast, Wingfoil mast KETOS FOIL\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ketos-foil.com\/en\/foil-mast\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\/\" \/>\n<meta property=\"og:site_name\" content=\"KETOS FOIL - Exceptional carbon foil since 2009\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ketosfoil\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-04T13:21:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ketos-foil.com\/wp-content\/uploads\/2025\/05\/PAT-EVO2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1066\" \/>\n\t<meta property=\"og:image:height\" content=\"1600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ketos-foil.com\\\/en\\\/foil-mast\\\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\\\/\",\"url\":\"https:\\\/\\\/www.ketos-foil.com\\\/en\\\/foil-mast\\\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\\\/\",\"name\":\"KETOS FORTRESS UHM Mast A \u201creinforced concrete\u201d mast built for Pumping (dock start), Wingfoil, and Kitefoil - KETOS FOIL - Exceptional carbon foil since 2009\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ketos-foil.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.ketos-foil.com\\\/en\\\/foil-mast\\\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ketos-foil.com\\\/en\\\/foil-mast\\\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ketos-foil.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/PAT-EVO2.jpg\",\"datePublished\":\"2025-08-03T16:29:56+00:00\",\"dateModified\":\"2026-03-04T13:21:43+00:00\",\"description\":\"FORTRESS Mast \u2013 Precision Meets Power The FORTRESS mast is a sleek 13.5\u202fmm profile that delivers an incredible stiffness-to-glide ratio. On our test bench, it clearly outperforms the top-tier masts from leading brands in both flexion and torsion. Designed for large-span wings like the 155LR, it was developed to meet the demands of heavier riders\u2014such as Patrick, a rider from Lake Annecy. A mast that\u2019s both rigid and responsive, with a generous chord and a refined lower section measuring just 13.5\u202fmm. Premium construction: Full prepreg carbon with integrated stringer High-performance UHM fabrics Klever Modular connection system (also available for Axis fuselages) We recommend pairing it with aluminum\\\/carbon fuselages for optimal performance. 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On our test bench, it clearly outperforms the top-tier masts from leading brands in both flexion and torsion.  Designed for large-span wings like the 155LR, it was developed to meet the demands of heavier riders\u2014such as Patrick, a rider from Lake Annecy.  A mast that\u2019s both rigid and responsive, with a generous chord and a refined lower section measuring just 13.5\u202fmm.  Premium construction:   Full prepreg carbon with integrated stringer  High-performance UHM fabrics  Klever Modular connection system (also available for Axis fuselages)  We recommend pairing it with aluminum\/carbon fuselages for optimal performance.  Design &amp; Profile:   Shaped and designed by Ketos  Unique Ketos profile, also featured on the Kulan, our thinnest mast at 11.6\u202fmm  Materials:   Ketos Core  Prepreg carbon  Manufacturing:   Molded in a 125T aluminum press  Production site: KETOS Factory, Aix-les-Bains, Savoie, French Alps  Material sourcing:   Carbon: France or Italy  Ketos Core: France or Spain  Energy usage: 100% from green or nuclear sources  Local commitment:   Over 90% of our revenue comes from products made in our KETOS Factory  Less than 1% comes from products manufactured in Asia  Recommended disciplines:   Flat: 80%  Downwind (DW): 80%  Wave: 80%  Pumping, Wing, DW - Pumping Mast, Foil mast, Wingfoil mast KETOS FOIL","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.ketos-foil.com\/en\/foil-mast\/mat-ketos-fortress-uhm-mat-en-beton-arme-pour-le-pumping-dock-start-le-wingfoil-et-le-kitefoil\/","og_locale":"en_US","og_type":"article","og_title":"KETOS FORTRESS UHM Mast A \u201creinforced concrete\u201d mast built for Pumping (dock start), Wingfoil, and Kitefoil - KETOS FOIL - Exceptional carbon foil since 2009","og_description":"FORTRESS Mast \u2013 Precision Meets Power The FORTRESS mast is a sleek 13.5\u202fmm profile that delivers an incredible stiffness-to-glide ratio. On our test bench, it clearly outperforms the top-tier masts from leading brands in both flexion and torsion.  Designed for large-span wings like the 155LR, it was developed to meet the demands of heavier riders\u2014such as Patrick, a rider from Lake Annecy.  A mast that\u2019s both rigid and responsive, with a generous chord and a refined lower section measuring just 13.5\u202fmm.  Premium construction:   Full prepreg carbon with integrated stringer  High-performance UHM fabrics  Klever Modular connection system (also available for Axis fuselages)  We recommend pairing it with aluminum\/carbon fuselages for optimal performance.  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