{"product_id":"helix-plus-cassette-12s-al-cogs-42-50t-e-thirteen","title":"Helix Plus Cassette 12s AL Cogs 42-50T e*thirteen","description":"e*thirteen 12 Speed Aluminum Replacement cluster 42-50T for a 9-50 Helix Cassette Black\u003cbr\u003e\u003cbr\u003eHelix Plus cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9-50 cassette.\u003cbr\u003e\nWhen installing the Helix Plus cassette, as with any cassette, we recommend checking chain wear. If your chain shows 0.5% or more wear, you will significantly decrease the wear life of your new cassette. Installing a new chain with your new cluster is a much better and economical solution.\u003cbr\u003e\nPRODUCT SPEC\u003cbr\u003e\nFreehub Mount XD™ and XDR™ Drivers Only\u003cbr\u003e\nMaterial 2 aluminum cogs, 10 steel cogs.\u003cbr\u003e\nRange 556%\u003cbr\u003e\nSize 9-50T: 9, 11, 13, 15, 17, 20, 23, 27, 31, 36, 42, 50\u003cbr\u003e\nSpeeds 12 Speed\u003cbr\u003e\nWeight 406g\u003cbr\u003e","brand":"Ethirteen","offers":[{"title":"FWS20-116","offer_id":50396497543447,"sku":"","price":250.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3486\/6455\/files\/Helix_Plus_Cassette_12_speed_Aluminum_Cogs_9-50T_ethirteen_Black.jpg?v=1745073090","url":"https:\/\/shop.bikesandscooters.co.nz\/products\/helix-plus-cassette-12s-al-cogs-42-50t-e-thirteen","provider":"Bikes \u0026 Scooters Marlborough","version":"1.0","type":"link"}