{"product_id":"rockshox-fork-csu-linear-xl-butterwagon-tech-uppers-b1-2027","title":"RockShox Fork CSU Linear XL with Butterwagon Tech Uppers B1+ (2027+) Replacement","description":"\u003cp\u003eThe RockShox Fork CSU - Linear XL - Butterwagon Tech Uppers B1+ (2027+) by Sram is a high-quality replacement crown steerer unit designed specifically for ZEB forks. Engineered to restore and maintain the structural integrity of your fork chassis, this component ensures your suspension system performs consistently even under demanding trail and gravity conditions. Featuring Linear XL spring compatibility and innovative ButterWagon Tech upper tubes, it reduces friction while enhancing lubrication for smoother operation and longer-lasting durability.\u003c\/p\u003e\n\n\u003cp\u003eCrafted with an anodised black finish, the CSU not only stands out with its sleek look but also offers superior wear resistance. Its design focuses on restoring stiffness and front-end precision, giving riders confident and precise handling. This product is compatible with various ZEB models including Select B1+, Flight Attendant B1+, and Ultimate B1+ from 2027 onwards, supporting both 27.5\" and 29\" wheel sizes and a 1.5\" tapered steerer.\u003c\/p\u003e\n\n\u003cp\u003eFor those looking to maintain or upgrade their RockShox forks, this CSU is an essential component that guarantees your suspension remains responsive and reliable. Explore more from \u003ca href=\"\/brands\/sram\"\u003eSram\u003c\/a\u003e and enhance your setup with compatible parts and accessories in the \u003ca href=\"\/collections\/rockshox-fork-spares\"\u003eRockShox fork spares\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRestoring the structural stiffness and chassis integrity of ZEB forks\u003c\/li\u003e\n  \u003cli\u003eEnsuring consistent and smooth suspension performance on demanding trails\u003c\/li\u003e\n  \u003cli\u003eCompatibility with Linear XL springs for tailored suspension tuning\u003c\/li\u003e\n  \u003cli\u003eReducing friction and improving lubrication thanks to ButterWagon Tech uppers\u003c\/li\u003e\n  \u003cli\u003eProviding durability and wear resistance with anodised black finish\u003c\/li\u003e\n  \u003cli\u003eSupporting both 27.5\" and 29\" wheel sizes for versatility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with fork models outside ZEB Select B1+, Flight Attendant B1+, and Ultimate B1+ (2027+)\u003c\/li\u003e\n  \u003cli\u003eNon-compatible with forks without a 1.5\" tapered steerer\u003c\/li\u003e\n  \u003cli\u003eNot intended as a standalone fork upgrade without compatible spring and damper components\u003c\/li\u003e\n  \u003cli\u003eUnsuitable for riders seeking a full fork replacement rather than a crown steerer unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this CSU compatible with older ZEB fork models?\u003c\/strong\u003e\u003cbr\u003eThis CSU is specifically designed for 2027 and later ZEB Select B1+, Flight Attendant B1+, and Ultimate B1+ forks, so it may not fit older models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this with any Linear spring?\u003c\/strong\u003e\u003cbr\u003eThe unit is compatible with Linear XL springs, ensuring optimal performance when paired accordingly.\u003c\/p\u003e","brand":"Sram","offers":[{"title":"44 \/ A","offer_id":46771329499311,"sku":"RSP8090123","price":342.31,"currency_code":"GBP","in_stock":true},{"title":"38 \/ A","offer_id":46771329532079,"sku":"RSP8090124","price":342.31,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/RSP8090123_69125.jpg?v=1776243712","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/rockshox-fork-csu-linear-xl-butterwagon-tech-uppers-b1-2027","provider":"Swinnerton Cycles","version":"1.0","type":"link"}