{"id":76595,"date":"2026-08-13T14:52:26","date_gmt":"2026-08-13T12:52:26","guid":{"rendered":"https:\/\/www.ciclobottegabikeshop.com\/?post_type=product&#038;p=76595"},"modified":"2026-08-13T14:55:41","modified_gmt":"2026-08-13T12:55:41","slug":"shimano-grx-rear-hydraulic-disc-brake-kit-st-rx600-lever-right-br-rx400-caliper-j-kit-black","status":"publish","type":"product","link":"https:\/\/www.ciclobottegabikeshop.com\/en\/shop\/shimano-grx-rear-hydraulic-disc-brake-kit-st-rx600-lever-right-br-rx400-caliper-j-kit-black\/","title":{"rendered":"Shimano GRX Rear Hydraulic Disc Brake Kit \u2013 ST-RX600 Lever (Right) + BR-RX400 Caliper J-Kit \u2013 Black"},"content":{"rendered":"<h1>Shimano GRX Rear Hydraulic Disc Brake Kit \u2013 ST-RX600 Lever (Right) + BR-RX400 Caliper J-Kit \u2013 Black<\/h1>\n<p data-path-to-node=\"9\">Get maximum braking control and crisp shifting precision on unpaved roads: discover the <b data-path-to-node=\"9\" data-index-in-node=\"88\">Shimano GRX Rear Hydraulic Disc Brake Kit (ST-RX600 Lever + BR-RX400 Caliper)<\/b>\u2014<b data-path-to-node=\"9\" data-index-in-node=\"166\">now on special offer for just \u20ac179.90<\/b> down from \u20ac271.99 with <b data-path-to-node=\"9\" data-index-in-node=\"227\">Free Shipping across Italy<\/b>. Supplied in a <b data-path-to-node=\"9\" data-index-in-node=\"269\">J-Kit Direct<\/b> configuration (including a 1700 mm hydraulic hose and a 2200 mm shift cable), this kit pairs the anti-slip ergonomics of the ST-RX600 Dual Control lever with the stopping power and heat dissipation of the BR-RX400 Flat Mount caliper equipped with finned resin pads.<\/p>\n<ul data-path-to-node=\"11\">\n<li>\n<p data-path-to-node=\"11,0,0\"><b data-path-to-node=\"11,0,0\" data-index-in-node=\"0\">Free Shipping Promotion:<\/b> Complimentary delivery included for all orders across Italy<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,1,0\"><b data-path-to-node=\"11,1,0\" data-index-in-node=\"0\">Easy-to-Install J-Kit Direct System:<\/b> Pre-bled hydraulic system that simplifies internal hose routing through the frame<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,2,0\"><b data-path-to-node=\"11,2,0\" data-index-in-node=\"0\">Gravel-Specific Ergonomics (ST-RX600):<\/b> Textured anti-slip lever body with a raised pivot point for effective braking lever action even from the hoods<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,3,0\"><b data-path-to-node=\"11,3,0\" data-index-in-node=\"0\">Advanced Heat Dissipation (Ice Technologies):<\/b> Resin brake pads equipped with cooling fins to prevent heat buildup on long descents<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,4,0\"><b data-path-to-node=\"11,4,0\" data-index-in-node=\"0\">Complete Cable &amp; Hose Set:<\/b> Includes a 1700 mm hydraulic hose and a 2200 mm shift cable ready for installation<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3 data-path-to-node=\"13\">\ud83d\udcd6 DETAILED DESCRIPTION<\/h3>\n<p data-path-to-node=\"14\">The kit consisting of the <b data-path-to-node=\"14\" data-index-in-node=\"26\">Shimano GRX ST-RX600 (Right)<\/b> lever and the <b data-path-to-node=\"14\" data-index-in-node=\"69\">BR-RX400 (Rear)<\/b> caliper sets the benchmark for shifting and braking performance on modern Gravel and All-Road bikes.<\/p>\n<h4 data-path-to-node=\"16\"><b data-path-to-node=\"16\" data-index-in-node=\"0\">Ergonomics &amp; Modulation of the ST-RX600 Lever<\/b><\/h4>\n<p data-path-to-node=\"17\">The <b data-path-to-node=\"17\" data-index-in-node=\"4\">GRX ST-RX600<\/b> Dual Control shifters were designed around off-road riding biomechanics. The anti-slip hood texture ensures a firm grip even in mud and rain. The lever pivot point is positioned 18 mm higher compared to standard road shifters, allowing riders to apply powerful braking force effortlessly even when riding on the hoods.<\/p>\n<h4 data-path-to-node=\"19\"><b data-path-to-node=\"19\" data-index-in-node=\"0\">Stopping Power &amp; Clean Setup with BR-RX400<\/b><\/h4>\n<p data-path-to-node=\"20\">The 2-piston <b data-path-to-node=\"20\" data-index-in-node=\"13\">BR-RX400<\/b> Flat Mount caliper offers outstanding braking performance and modulated feedback across all surfaces. The integration of finned resin pads dramatically reduces heat accumulation during steep, prolonged descents. Additionally, Shimano's <b data-path-to-node=\"20\" data-index-in-node=\"258\">J-Kit (Joint-Kit)<\/b> technology ensures a clean, hassle-free installation even on frames with internal cable routing.<\/p>\n<hr \/>\n<h3 data-path-to-node=\"22\">\ud83d\udce6 WHAT'S IN THE BOX<\/h3>\n<ul data-path-to-node=\"23\">\n<li>\n<p data-path-to-node=\"23,0,0\">1x Shimano GRX ST-RX600 Right Shift\/Brake Dual Control Lever (11-speed)<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,1,0\">1x Shimano GRX BR-RX400 Rear Disc Brake Caliper (Flat Mount)<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,2,0\">1x Shimano SM-BH90-JK-SSR Hydraulic Hose 1700 mm (pre-bled)<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,3,0\">1x Shimano Shift Cable 2200 mm + OT-SP41 outer casing<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,4,0\">1x Pair of Finned Resin Brake Pads (L03A\/L05A Resin Ice-Tech)<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,5,0\">Caliper mounting bolts (for rear frame mount thickness 25 mm)<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3 data-path-to-node=\"25\">\ud83d\udcca TECHNICAL SPECIFICATIONS TABLE<\/h3>\n<table data-path-to-node=\"26\">\n<thead>\n<tr>\n<td><strong>Feature<\/strong><\/td>\n<td><strong>Product Specifications<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"26,1,0,0\"><b data-path-to-node=\"26,1,0,0\" data-index-in-node=\"0\">Brand<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,1,1,0\">Shimano<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,2,0,0\"><b data-path-to-node=\"26,2,0,0\" data-index-in-node=\"0\">Group \/ Series<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,2,1,0\">Shimano GRX<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,3,0,0\"><b data-path-to-node=\"26,3,0,0\" data-index-in-node=\"0\">MPN \/ Part Number<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,3,1,0\">IRX4001RRDSC170A<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,4,0,0\"><b data-path-to-node=\"26,4,0,0\" data-index-in-node=\"0\">Shifter \/ Lever<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,4,1,0\">ST-RX600-R (Right \/ Rear Dual Control)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,5,0,0\"><b data-path-to-node=\"26,5,0,0\" data-index-in-node=\"0\">Brake Caliper<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,5,1,0\">BR-RX400-R (Rear, 2-Piston)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,6,0,0\"><b data-path-to-node=\"26,6,0,0\" data-index-in-node=\"0\">Caliper Mount<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,6,1,0\">Flat Mount (for 25 mm rear frame mount thickness)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,7,0,0\"><b data-path-to-node=\"26,7,0,0\" data-index-in-node=\"0\">Mounting System<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,7,1,0\">J-Kit (Joint Kit Direct)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,8,0,0\"><b data-path-to-node=\"26,8,0,0\" data-index-in-node=\"0\">Hydraulic Hose Length<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,8,1,0\">1700 mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,9,0,0\"><b data-path-to-node=\"26,9,0,0\" data-index-in-node=\"0\">Shift Cable Length<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,9,1,0\">2200 mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,10,0,0\"><b data-path-to-node=\"26,10,0,0\" data-index-in-node=\"0\">Included Brake Pads<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,10,1,0\">Finned Resin (Ice-Tech)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,11,0,0\"><b data-path-to-node=\"26,11,0,0\" data-index-in-node=\"0\">Brake Fluid<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,11,1,0\">Shimano Mineral Oil<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,12,0,0\"><b data-path-to-node=\"26,12,0,0\" data-index-in-node=\"0\">Color<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,12,1,0\">Black<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"26,13,0,0\"><b data-path-to-node=\"26,13,0,0\" data-index-in-node=\"0\">Recommended Use<\/b><\/span><\/td>\n<td><span data-path-to-node=\"26,13,1,0\">Gravel, Bikepacking, Cyclocross, Road Endurance<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3 data-path-to-node=\"28\">\u2753 FREQUENTLY ASKED QUESTIONS (FAQ)<\/h3>\n<blockquote data-path-to-node=\"29\">\n<p data-path-to-node=\"29,0\"><b data-path-to-node=\"29,0\" data-index-in-node=\"0\">Q: What is Shimano's J-Kit (Joint-Kit Direct) technology?<\/b><\/p>\n<p data-path-to-node=\"29,0\"><b data-path-to-node=\"29,0\" data-index-in-node=\"58\">R \/ A:<\/b> J-Kit is a system where the hydraulic hose is pre-bled with mineral oil and sealed, while the lever reservoir also holds fluid. This makes routing the hose internally through the frame straightforward without losing fluid before making the final connection.<\/p>\n<\/blockquote>\n<blockquote data-path-to-node=\"31\">\n<p data-path-to-node=\"31,0\"><b data-path-to-node=\"31,0\" data-index-in-node=\"0\">Q: What rear frame thickness are the included mounting bolts designed for?<\/b><\/p>\n<p data-path-to-node=\"31,0\"><b data-path-to-node=\"31,0\" data-index-in-node=\"75\">R \/ A:<\/b> The kit includes standard hardware suitable for frame chainstays\/seatstays with a Flat Mount bracket thickness of 25 mm.<\/p>\n<\/blockquote>\n<blockquote data-path-to-node=\"33\">\n<p data-path-to-node=\"33,0\"><b data-path-to-node=\"33,0\" data-index-in-node=\"0\">Q: Is free shipping valid for all of Italy?<\/b><\/p>\n<p data-path-to-node=\"33,0\"><b data-path-to-node=\"33,0\" data-index-in-node=\"44\">R \/ A:<\/b> Yes, free shipping for this item is included in the purchase price for all delivery destinations within Italian national territory.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<h2>Shimano GRX Rear Hydraulic Disc Brake Kit \u2013 ST-RX600 Lever (Right) + BR-RX400 Caliper J-Kit \u2013 Black<\/h2>\n<p data-path-to-node=\"9\">Get maximum braking control and crisp shifting precision on unpaved roads: discover the <b data-path-to-node=\"9\" data-index-in-node=\"88\">Shimano GRX Rear Hydraulic Disc Brake Kit (ST-RX600 Lever + BR-RX400 Caliper)<\/b>\u2014<b data-path-to-node=\"9\" data-index-in-node=\"166\">now on special offer for just \u20ac179.90<\/b> down from \u20ac271.99 with <b data-path-to-node=\"9\" data-index-in-node=\"227\">Free Shipping across Italy<\/b>. Supplied in a <b data-path-to-node=\"9\" data-index-in-node=\"269\">J-Kit Direct<\/b> configuration (including a 1700 mm hydraulic hose and a 2200 mm shift cable), this kit pairs the anti-slip ergonomics of the ST-RX600 Dual Control lever with the stopping power and heat dissipation of the BR-RX400 Flat Mount caliper equipped with finned resin pads.<\/p>\n<ul data-path-to-node=\"11\">\n<li>\n<p data-path-to-node=\"11,0,0\"><b data-path-to-node=\"11,0,0\" data-index-in-node=\"0\">Free Shipping Promotion:<\/b> Complimentary delivery included for all orders across Italy<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,1,0\"><b data-path-to-node=\"11,1,0\" data-index-in-node=\"0\">Easy-to-Install J-Kit Direct System:<\/b> Pre-bled hydraulic system that simplifies internal hose routing through the frame<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,2,0\"><b data-path-to-node=\"11,2,0\" data-index-in-node=\"0\">Gravel-Specific Ergonomics (ST-RX600):<\/b> Textured anti-slip lever body with a raised pivot point for effective braking lever action even from the hoods<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,3,0\"><b data-path-to-node=\"11,3,0\" data-index-in-node=\"0\">Advanced Heat Dissipation (Ice Technologies):<\/b> Resin brake pads equipped with cooling fins to prevent heat buildup on long descents<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,4,0\"><b data-path-to-node=\"11,4,0\" data-index-in-node=\"0\">Complete Cable &amp; Hose Set:<\/b> Includes a 1700 mm hydraulic hose and a 2200 mm shift cable ready for installation<\/p>\n<\/li>\n<\/ul>\n","protected":false},"featured_media":76593,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","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":"0","ocean_custom_header_template":"0","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":"0","ocean_menu_typo_font_family":"0","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":"0"},"pwb-brand":[2632],"product_brand":[],"product_cat":[411,4323],"product_tag":[14520,14519,14518,14516,14517],"class_list":["post-76595","product","type-product","status-publish","has-post-thumbnail","pwb-brand-shimano-en","product_cat-hydraulic-disc-brake-sets","product_cat-shifters","product_tag-cycling-components-ciclobottega-resana","product_tag-gravel-hydraulic-disc-brake-kit-1700mm","product_tag-right-shift-lever-rx600-rear-caliper-rx400","product_tag-shimano-grx-hydraulic-disc-brake-kit-brrx400ktstrx600str-right-rear","product_tag-shimano-grx-st-rx600-br-rx400-rear-hydraulic-brake-j-kit","entry","has-media","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple","has-product-nav","col","span_1_of_3","owp-content-center","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails"],"brands":[{"id":2632,"name":"Shimano","slug":"shimano-en"}],"_links":{"self":[{"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/product\/76595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/comments?post=76595"}],"version-history":[{"count":1,"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/product\/76595\/revisions"}],"predecessor-version":[{"id":76596,"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/product\/76595\/revisions\/76596"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/media\/76593"}],"wp:attachment":[{"href":"https:\/\/www.ciclobottegabikeshop.com\/en\/wp-json\/wp\/v2\/media?parent=76595"}],"wp:term":[{"taxonomy":"pwb-brand",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