{"product_id":"rockshox-boxxer-35mm-crown-steerer-uppertube-assembly-mountain-bike-fk9073","title":"RockShox BoXXer 35mm Straight-Wall Aluminum Left Upper Tube for 2013-2015 Forks - Black, Replacement CSU, Heavy-Duty Mountain Bike Suspension Components","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your mountain bike's front suspension with the RockShox 11.4015.363.050 Upper Tube for BoXXer (2013-2015) - a high-performance replacement part designed for durability, precision, and optimized riding experience.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Construction:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eCrafted from premium straight-wall aluminum, this left-side upper tube ensures strength and lightweight performance essential for aggressive trail riding and downhill racing. The black anodized finish not only provides corrosion resistance but also a sleek, stealthy look that complements any riding setup.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Engineering:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eDesigned specifically for the RockShox BoXXer forks from 2013 to 2015, this upper tube features precise engineering to maintain optimal suspension geometry. The straight-wall design guarantees stability and consistent handling during rugged descents and high-impact landings, making it a reliable choice for mountain biking enthusiasts.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eComponents \u0026amp; Technology:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eThis replacement CSU (crown\/steerer\/upper) unit is ideal for safeguarding your fork's integrity and performance. Compatible with tapered steerers (when applicable) and featuring DTC stanchions, it offers enhanced stiffness and durability. The 35mm inner diameter ensures a secure fit within your fork assembly, contributing to improved steering precision and overall ride control.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eStyle \u0026amp; Use Case:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003eDesigned for aggressive trail riders, enduro racers, and downhill enthusiasts, this upper tube blends functionality with a clean black aesthetic. Whether you're refurbishing an aging fork or customizing your ride, this part guarantees reliable performance on demanding terrains.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative Features \u0026amp; Compatibility:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Straight-wall aluminum construction for increased durability\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Precise fitment with BoXXer 35mm forks (2013-2015)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Compatible with tapered steerer tubes (specify when ordering)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Designed for left-side installation to ensure optimal fork alignment and performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003eUpgrade your suspension today with the RockShox BoXXer Upper Tube and experience enhanced stability, control, and confidence on every ride. Perfect for maintenance, repairs, or customizing your downhill setup, this high-quality part ensures your fork remains responsive and reliable during the most challenging descents.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eHigh-performance straight-wall aluminum upper tube designed specifically for BoXXer forks from 2013 to 2015, offering exceptional durability and strength for aggressive downhill riding. \u003c\/li\u003e\n\u003cli\u003eConstructed from lightweight, corrosion-resistant aluminum with a sleek black finish, providing both aesthetic appeal and long-lasting performance in tough trail conditions. \u003c\/li\u003e\n\u003cli\u003eEngineered as a left side replacement crown\/steerer\/upper tube component, compatible with 35mm stanchion BoXXer forks, ensuring precise fit and reliable handling for demanding mountain biking situations. \u003c\/li\u003e\n\u003cli\u003eCompatible with tapered steerers (1.5\" to 1-1\/8\") and features optimized dimensions for short (3\/4\" drop) and tall (2\" drop) head tube setups, enhancing fork responsiveness and stability. \u003c\/li\u003e\n\u003cli\u003eIdeal for seasoned riders and bike technicians seeking OEM replacement parts with innovative engineering, easy installation, and seamless integration into existing suspension systems for enhanced downhill performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"RockShox","offers":[{"title":"Default Title","offer_id":42207190712387,"sku":"FK9073","price":172.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/FK9073.jpg?v=1779332609","url":"https:\/\/365cycles.com\/products\/rockshox-boxxer-35mm-crown-steerer-uppertube-assembly-mountain-bike-fk9073","provider":"365 Cycles","version":"1.0","type":"link"}