{"product_id":"tripeak-ema-jw1318a-shm81","title":"TRiPEAK Asymmetric Oversized Pulley Wheel Kit for Shimano XT M81xx \/ GRX RX822 SGS – 13\/18T","description":"\u003cp\u003eThe TRiPEAK asymmetric oversized pulley wheel kit for Shimano XT M81xx \/ GRX RX822 SGS uses the listed 13\/18T tooth combination. Check the exact rear derailleur model, generation and cage designation against the specification below. A shared Shimano, SRAM or Campagnolo name does not make different derailleur versions interchangeable.\u003c\/p\u003e\u003ch2\u003eCompatibility and supplied specification\u003c\/h2\u003e\u003cp\u003e13\/18T AOPW Kits for Shimano XT M81XX SGS, GRX RX822 SGS\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification:\u003c\/strong\u003e Shimano,13\/18T Asymmetric Oversized Pulley Wheel Kits for Shimano XT M8100-SGS\/M8120-SGS\/M8130-SGS; GRX RX822-SGS\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81GD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilver\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81SV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDark Blue\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81DB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Blue\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81LB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81GR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81RD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81OR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePurple\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81PL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePink\u003c\/td\u003e\n\u003ctd\u003eEMA-JW1318A-SHM81PN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eChoosing this version\u003c\/h2\u003e\u003cp\u003eAOPW means asymmetric oversized pulley wheel. The larger pulley changes the chain’s path through the derailleur, so tooth count and model-specific mounting parts must match. AERO and EVO versions are separate product designs; choose by the supported derailleur and supplied parts rather than assuming all AOPW kits share the same fit.\u003c\/p\u003e\u003ch2\u003eInstallation checks\u003c\/h2\u003e\u003cp\u003eTRiPEAK’s \u003ca href=\"https:\/\/tripeakusa.com\/news\/keeps-the-whole-upgrade-fast-precise-and\"\u003eofficial AOPW upgrade article\u003c\/a\u003e describes retaining the original derailleur cage without requiring a longer chain. It also asks installers to check that chain length is appropriate for the bike’s setup. Follow the matching \u003ca href=\"https:\/\/tripeakusa.com\/support#manuals\"\u003eTRiPEAK installation manual\u003c\/a\u003e for the upper\/lower pulley positions and mounting parts, then check shifting and clearance through every gear.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eWill it fit a different generation of the same groupset?\u003c\/summary\u003e\u003cp\u003eOnly the models listed in this product’s specification are supported by the information here. Road AXS, XPLR, Eagle and T-Type are distinct applications. Check the full derailleur code and cage length before choosing a kit or wheel set.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy use an 18T lower pulley?\u003c\/summary\u003e\u003cp\u003eTRiPEAK’s \u003ca href=\"https:\/\/tripeakusa.com\/news\/whats-the-benefit-of-a-bigger-pulley\"\u003e18T-versus-11T explanation\u003c\/a\u003e describes a gentler chain-bending angle with the larger pulley. The asymmetric mount accommodates the larger wheel in the supported original derailleur arm. Read \u003ca href=\"\/blogs\/news\/are-oversized-pulley-wheels-worth-it\"\u003ehow the AOPW upgrade works\u003c\/a\u003e for the design and fit details.\u003c\/p\u003e\u003c\/details\u003e\u003cp\u003eCompare \u003ca href=\"\/collections\/aopw-pulley-wheels\"\u003eTRiPEAK AOPW kits\u003c\/a\u003e and \u003ca href=\"\/collections\/pulley-wheels\"\u003epulley wheel sets\u003c\/a\u003e, or \u003ca href=\"\/pages\/contact\"\u003esend us your derailleur model\u003c\/a\u003e to check fit before ordering.\u003c\/p\u003e","brand":"TRiPEAK","offers":[{"title":"Black","offer_id":67736397545565,"sku":"EMA-JW1318A-SHM81BK","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Gold","offer_id":67736626921565,"sku":"EMA-JW1318A-SHM81GD","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Silver","offer_id":67736626954333,"sku":"EMA-JW1318A-SHM81SV","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Dark Blue","offer_id":67736626987101,"sku":"EMA-JW1318A-SHM81DB","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Light Blue","offer_id":67736627019869,"sku":"EMA-JW1318A-SHM81LB","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Green","offer_id":67736627052637,"sku":"EMA-JW1318A-SHM81GR","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Red","offer_id":67736627085405,"sku":"EMA-JW1318A-SHM81RD","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Orange","offer_id":67736627118173,"sku":"EMA-JW1318A-SHM81OR","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Purple","offer_id":67736627150941,"sku":"EMA-JW1318A-SHM81PL","price":180.0,"currency_code":"USD","in_stock":false},{"title":"Pink","offer_id":67736627183709,"sku":"EMA-JW1318A-SHM81PN","price":180.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/1631\/1901\/files\/tripeak-pulley-import-d45ed206849f.png?v=1791905961","url":"https:\/\/precisionwatts.com\/products\/tripeak-ema-jw1318a-shm81","provider":"Precision Watts","version":"1.0","type":"link"}