{"id":1042440,"date":"2026-06-23T10:46:20","date_gmt":"2026-06-23T08:46:20","guid":{"rendered":"https:\/\/stage.hibike.com\/shop\/unkategorisiert\/shimano-grx-rx820-komplettgruppe-1x12-fach-40-zahne-bulk\/"},"modified":"2026-08-20T05:06:12","modified_gmt":"2026-08-20T03:06:12","slug":"shimano-grx-rx820-komplettgruppe-1x12-fach-40-zahne-bulk","status":"publish","type":"product","link":"https:\/\/stage.hibike.com\/en\/shop\/komponenten\/schaltung\/schaltgruppen-schaltung\/shimano-grx-rx820-komplettgruppe-1x12-fach-40-zahne-bulk\/","title":{"rendered":"Shimano GRX RX820 complete groupset 1\u00d712-speed 40 teeth"},"content":{"rendered":"
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Shimano GRX 820 1\u00d712. Your gravel shifting center for any terrain.<\/h2>\n

The Shimano GRX 820 1x12 groupset is perfect for you if you want to uncompromisingly optimize your gravel bike for performance, control, and adventure. With its wide gear range, precise mechanical shifting, and powerful disc brakes, you'll get the most out of every trail and gravel road.<\/p>\n<\/div>\n

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More control on gravel. Single chainring. Maximum freedom.<\/h3>\n

With the 1x12 GRX 820 groupset, you ride with deliberate simplicity. A single chainring up front means less thinking about gears and more focus on the line. The setup, specifically designed for gravel riding, combined with the 10-51 cassette, gives you a huge range for steep climbs and long rides. The GRX shifting logic is clear, crisp, and remains precise even under load.<\/p>\n

Robust technology for tough applications<\/h3>\n

The GRX crankset with its optimized chainline creates clearance for wider tires and works perfectly with modern gravel frames. The rear derailleur with Shadow RD Plus chain stabilizer smooths out chain movement on rough descents. You'll ride quieter, safer, and with significantly fewer chain drops. A high-quality 12-speed cassette and chain ensure long-lasting durability, even if you regularly ride your bike off-road.<\/p>\n

Hydraulic disc brakes. Full control in all weather conditions.<\/h3>\n

The GRX 820 brakes offer you finely adjustable power and high stability. Whether it's a long alpine descent, a wet forest path, or a fast gravel section, you'll stay in control with just two fingers on the handlebars. The ergonomically shaped GRX levers fit perfectly in your hand, especially when riding in the drops and on rough surfaces. This ensures you always feel safe, even on long days in the saddle.<\/p>\n

Perfect for sporty gravel racers and adventurers<\/h3>\n

Whether it's an ambitious gravel race, a daily commute with off-road sections, or a bikepacking weekend, the GRX 820 1x12 groupset is your foundation for a fast and reliable setup. You get all the essential components from a single source, optimally matched and ready for the next upgrade or rebuild of your gravel bike.<\/p>\n<\/div>\n

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specification<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
feature<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
drive<\/td>\n1x12 mechanical drivetrain. Specifically for gravel bikes.<\/td>\n<\/tr>\n
Braking system<\/td>\nShimano GRX BR-RX820 hydraulic disc brakes with GRX ST-RX820 levers<\/td>\n<\/tr>\n
discipline<\/td>\nGravel. Bikepacking. Sporty commuting. Light off-road.<\/td>\n<\/tr>\n
cassette<\/td>\nShimano CS-M8100 12-speed cassette 10-51 teeth<\/td>\n<\/tr>\n
chainring<\/td>\n40 teeth for a climbing-strong setup<\/td>\n<\/tr>\n
catenary<\/td>\nGravel-optimized chainline of approximately 49.7 mm for increased tire clearance<\/td>\n<\/tr>\n
crankset<\/td>\nShimano GRX FC-RX820 1x crankset. Aluminum. Available in 165, 170, or 172.5 mm crank arm lengths.<\/td>\n<\/tr>\n
Delivery status<\/td>\nBulk version without retail packaging<\/td>\n<\/tr>\n
shifter<\/td>\nShimano GRX RD-RX822 rear derailleur with Shadow RD Plus chain stabilizer for a quiet chain<\/td>\n<\/tr>\n
Shifting performance<\/td>\nFinely defined gear ratios. Fast gear changes under load. Optimized for mixed terrain.<\/td>\n<\/tr>\n
Translation range<\/td>\nDepending on the cassette, either a narrow racing focus or a maximum range for steep climbs and bikepacking.<\/td>\n<\/tr>\n
use<\/td>\nDesigned for flat mount frames with 12-speed drivetrain and disc brake mount<\/td>\n<\/tr>\n
material<\/td>\nHigh-quality aluminum components combined with steel in heavily stressed parts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Scope of delivery<\/h3>\n
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  • 1x Shimano GRX FC-RX820 crankset 40 teeth <\/li>\n
  • 1x Shimano GRX ST-RX820\/BR-RX820 front disc brake<\/li>\n
  • 1x Shimano GRX ST-RX820\/BR-RX820 rear disc brake<\/li>\n
  • 1x Shimano GRX RD-RX822 12-speed rear derailleur<\/li>\n
  • 1x Shimano CN-M8100 12-speed chain with Quick-Link<\/li>\n
  • 1x Shimano CS-M8100 cassette 12-speed 10-51 teeth <\/li>\n
  • 2x Shimano RT-CL800 brake disc 160mm<\/li>\n
  • 1x Shimano BSA bottom bracket<\/li>\n<\/ul>\n<\/div>\n
    \n

     <\/h3>\n<\/div>\n<\/div>\n\n\n\n
    brand<\/th>\nShimano<\/td>\n<\/tr>\n
    EAN<\/th>\n4255898608593<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Shimano GRX 820 1×12. Deine Gravel Schaltzentrale für jedes Terrain Die Shimano GRX 820 1×12 Gruppe ist wie gemacht für Dich, wenn Du Dein Gravelbike kompromisslos auf Leistung, Kontrolle und Abenteuer trimmen willst. Mit großem Übersetzungsbereich, präziser mechanischer Schaltung und kraftvollen Scheibenbremsen holst Du aus jedem Trail und jeder Schotterpiste das Maximum heraus. Mehr Kontrolle […]<\/p>\n","protected":false},"featured_media":1088627,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[22442],"product_cat":[3661,25099,25100],"product_tag":[19555],"class_list":["post-1042440","product","type-product","status-publish","has-post-thumbnail","product_brand-shimano","product_cat-komponenten","product_cat-schaltung","product_cat-schaltgruppen-schaltung","product_tag-bulk","member-discount","discount-restricted","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-variable","has-product-safety-information"],"_links":{"self":[{"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product\/1042440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/comments?post=1042440"}],"version-history":[{"count":1,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product\/1042440\/revisions"}],"predecessor-version":[{"id":1054296,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product\/1042440\/revisions\/1054296"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/media\/1088627"}],"wp:attachment":[{"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/media?parent=1042440"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product_brand?post=1042440"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product_cat?post=1042440"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/stage.hibike.com\/en\/wp-json\/wp\/v2\/product_tag?post=1042440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}