{"product_id":"shimano-tension-pulley-guide-set-rd-rx810-815","title":"Shimano Tension \u0026 Guide Pulley Set Rd-Rx810\/815","description":"\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"01ab4833-7cdc-4d96-b3d7-3e7beab46f2e\"\u003e\r\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-83\" data-turn=\"user\" data-turn-id=\"01ab4833-7cdc-4d96-b3d7-3e7beab46f2e\" data-turn-id-container=\"01ab4833-7cdc-4d96-b3d7-3e7beab46f2e\" dir=\"auto\"\u003e \u003c\/section\u003e\r\n\u003c\/div\u003e\r\n\r\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-6a0d6745-2188-83ea-90b0-cb81569254ed-21\"\u003e\r\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-84\" data-turn=\"assistant\" data-turn-id=\"request-6a0d6745-2188-83ea-90b0-cb81569254ed-21\" data-turn-id-container=\"request-6a0d6745-2188-83ea-90b0-cb81569254ed-21\" dir=\"auto\"\u003e\r\n\u003cdiv class=\"text-base my-auto mx-auto pb-3 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\r\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\r\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\r\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-author-role=\"assistant\" data-message-id=\"a8c85b21-6c48-439a-bf1e-0c7ab170de61\" data-message-model-slug=\"gpt-5-3-mini\" data-turn-start-message=\"true\" dir=\"auto\" tabindex=\"0\"\u003e\r\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\r\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\r\n\u003cp data-end=\"197\" data-start=\"0\"\u003eThe \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eShimano GRX RD‑RX810 \/ RD‑RX815 Tension \u0026amp; Guide Pulley Set\u003c\/span\u003e is the official Shimano replacement pulley (jockey wheel) kit used for \u003cstrong data-end=\"153\" data-start=\"113\"\u003e11-speed GRX gravel rear derailleurs\u003c\/strong\u003e, covering both mechanical and Di2 versions.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"255\" data-section-id=\"qxmwqz\" data-start=\"241\"\u003eWhat it is\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"303\" data-start=\"256\"\u003eThis is a \u003cstrong data-end=\"298\" data-start=\"266\"\u003ereplacement pulley wheel set\u003c\/strong\u003e for:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"427\" data-start=\"304\"\u003e\r\n\t\u003cli data-end=\"365\" data-section-id=\"pombbp\" data-start=\"304\"\u003e\n\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eShimano GRX RD‑RX810\u003c\/span\u003e (mechanical 11-speed)\u003c\/li\u003e\r\n\t\u003cli data-end=\"427\" data-section-id=\"2fxi8s\" data-start=\"366\"\u003e\n\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eShimano GRX RD‑RX815\u003c\/span\u003e (electronic 11-speed)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"441\" data-start=\"429\"\u003eIt includes:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"527\" data-start=\"442\"\u003e\r\n\t\u003cli data-end=\"483\" data-section-id=\"yk8tvu\" data-start=\"442\"\u003e\u003cstrong data-end=\"481\" data-start=\"444\"\u003eGuide pulley (upper jockey wheel)\u003c\/strong\u003e\u003c\/li\u003e\r\n\t\u003cli data-end=\"527\" data-section-id=\"1dxjmb9\" data-start=\"484\"\u003e\u003cstrong data-end=\"525\" data-start=\"486\"\u003eTension pulley (lower jockey wheel)\u003c\/strong\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"532\" data-start=\"529\"\u003e\r\n\u003ch2 data-end=\"550\" data-section-id=\"1urilu4\" data-start=\"534\"\u003eWhat it does\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"589\" data-start=\"551\"\u003eThese two pulleys are responsible for:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"786\" data-start=\"591\"\u003e\r\n\t\u003cli data-end=\"689\" data-section-id=\"87xgc6\" data-start=\"591\"\u003e\n\u003cstrong data-end=\"609\" data-start=\"593\"\u003eGuide pulley\u003c\/strong\u003e\r\n\r\n\t\u003cul data-end=\"689\" data-start=\"612\"\u003e\r\n\t\t\u003cli data-end=\"650\" data-section-id=\"r1sle1\" data-start=\"612\"\u003edirects chain into each gear cleanly\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"689\" data-section-id=\"hk3sfo\" data-start=\"653\"\u003eensures accurate shifting response\u003c\/li\u003e\r\n\t\u003c\/ul\u003e\r\n\t\u003c\/li\u003e\r\n\t\u003cli data-end=\"786\" data-section-id=\"7fxju1\" data-start=\"691\"\u003e\n\u003cstrong data-end=\"711\" data-start=\"693\"\u003eTension pulley\u003c\/strong\u003e\r\n\t\u003cul data-end=\"786\" data-start=\"714\"\u003e\r\n\t\t\u003cli data-end=\"739\" data-section-id=\"5tvw0b\" data-start=\"714\"\u003emaintains chain tension\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"786\" data-section-id=\"1jxni47\" data-start=\"742\"\u003estabilises drivetrain under pedalling load\u003c\/li\u003e\r\n\t\u003c\/ul\u003e\r\n\t\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"822\" data-start=\"788\"\u003eTogether they keep the GRX system:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"881\" data-start=\"823\"\u003e\r\n\t\u003cli data-end=\"831\" data-section-id=\"1lvsh9m\" data-start=\"823\"\u003esmooth\u003c\/li\u003e\r\n\t\u003cli data-end=\"839\" data-section-id=\"16j3das\" data-start=\"832\"\u003equiet\u003c\/li\u003e\r\n\t\u003cli data-end=\"881\" data-section-id=\"rbx57z\" data-start=\"840\"\u003eprecise under gravel vibration and load\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"886\" data-start=\"883\"\u003e\r\n\u003ch2 data-end=\"905\" data-section-id=\"purqi0\" data-start=\"888\"\u003eCompatibility\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"944\" data-start=\"906\"\u003eThis set is designed specifically for:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"990\" data-start=\"945\"\u003e\r\n\t\u003cli data-end=\"990\" data-section-id=\"1itcvl3\" data-start=\"945\"\u003eGRX \u003cstrong data-end=\"990\" data-start=\"951\"\u003eRX810 \/ RX815 11-speed systems only\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1022\" data-start=\"992\"\u003eIt is \u003cstrong data-end=\"1016\" data-start=\"998\"\u003enot compatible\u003c\/strong\u003e with:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1104\" data-start=\"1023\"\u003e\r\n\t\u003cli data-end=\"1053\" data-section-id=\"1dprzn0\" data-start=\"1023\"\u003enewer 12-speed RX820 systems\u003c\/li\u003e\r\n\t\u003cli data-end=\"1071\" data-section-id=\"1yj213t\" data-start=\"1054\"\u003eMTB derailleurs\u003c\/li\u003e\r\n\t\u003cli data-end=\"1104\" data-section-id=\"1ot2z1n\" data-start=\"1072\"\u003eroad 12-speed R-series systems\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1160\" data-start=\"1106\"\u003e(Shimano pulley geometry is speed- and cage-specific.)\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"1165\" data-start=\"1162\"\u003e\r\n\u003ch2 data-end=\"1190\" data-section-id=\"ebosfz\" data-start=\"1167\"\u003eKey characteristics\u003c\/h2\u003e\r\n\r\n\u003cul data-end=\"1427\" data-start=\"1191\"\u003e\r\n\t\u003cli data-end=\"1217\" data-section-id=\"gtyw8s\" data-start=\"1191\"\u003eGenuine Shimano OEM part\u003c\/li\u003e\r\n\t\u003cli data-end=\"1264\" data-section-id=\"1bni5cq\" data-start=\"1218\"\u003eDesigned for \u003cstrong data-end=\"1264\" data-start=\"1233\"\u003egravel vibration resistance\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\t\u003cli data-end=\"1322\" data-section-id=\"3uknyx\" data-start=\"1265\"\u003eDirectional pulley design (must be installed correctly)\u003c\/li\u003e\r\n\t\u003cli data-end=\"1427\" data-section-id=\"d9b3g4\" data-start=\"1323\"\u003eEngineered tooth profile for chain retention under rough terrain\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1432\" data-start=\"1429\"\u003e\r\n\u003ch2 data-end=\"1453\" data-section-id=\"321yx1\" data-start=\"1434\"\u003eWhen to replace\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1492\" data-start=\"1454\"\u003eYou should replace these pulleys when:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1636\" data-start=\"1493\"\u003e\r\n\t\u003cli data-end=\"1530\" data-section-id=\"1u7xs6w\" data-start=\"1493\"\u003eshifting becomes noisy or imprecise\u003c\/li\u003e\r\n\t\u003cli data-end=\"1567\" data-section-id=\"1u8tzc\" data-start=\"1531\"\u003echain starts “skipping” under load\u003c\/li\u003e\r\n\t\u003cli data-end=\"1604\" data-section-id=\"1arafj5\" data-start=\"1568\"\u003epulley teeth become hooked or worn\u003c\/li\u003e\r\n\t\u003cli data-end=\"1636\" data-section-id=\"18ei2be\" data-start=\"1605\"\u003ebearings feel rough or gritty\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1641\" data-start=\"1638\"\u003e\r\n\u003ch2 data-end=\"1674\" data-section-id=\"1l1yucq\" data-start=\"1643\"\u003eGRX-specific design purpose\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1737\" data-start=\"1675\"\u003eCompared to standard road pulleys, GRX versions are tuned for:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1871\" data-start=\"1738\"\u003e\r\n\t\u003cli data-end=\"1763\" data-section-id=\"ds698q\" data-start=\"1738\"\u003emud and dust resistance\u003c\/li\u003e\r\n\t\u003cli data-end=\"1797\" data-section-id=\"1c0gstp\" data-start=\"1764\"\u003echain stability on rough gravel\u003c\/li\u003e\r\n\t\u003cli data-end=\"1833\" data-section-id=\"1w9l12u\" data-start=\"1798\"\u003ebetter chain retention over bumps\u003c\/li\u003e\r\n\t\u003cli data-end=\"1871\" data-section-id=\"1xvf00g\" data-start=\"1834\"\u003ereduced drivetrain noise under load\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1876\" data-start=\"1873\"\u003e\r\n\u003ch2 data-end=\"1893\" data-section-id=\"1g6g9c7\" data-start=\"1878\"\u003eBottom line\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"197\" data-start=\"0\"\u003e \u003c\/p\u003e\r\n\r\n\u003cp data-end=\"2119\" data-start=\"1894\"\u003eThe Shimano GRX RD-RX810\/RX815 pulley set is a \u003cstrong data-end=\"2010\" data-start=\"1941\"\u003eprecision OEM replacement kit for 11-speed GRX gravel derailleurs\u003c\/strong\u003e, restoring smooth shifting, chain stability, and quiet drivetrain performance in rough and variable terrain.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"197\" data-start=\"0\"\u003e \u003c\/p\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/section\u003e\r\n\u003c\/div\u003e\r\n","brand":"Shimano","offers":[{"title":"Default Title","offer_id":46322977013982,"sku":"Y3GE98010","price":250.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1242\/8790\/files\/14046_ShimanoRD-RX810Tension_GuidePulleySet.jpg?v=1740612135","url":"https:\/\/onlino-bicycle-shopco.shop\/products\/shimano-tension-pulley-guide-set-rd-rx810-815","provider":"Online Bicycle Shop","version":"1.0","type":"link"}