{"product_id":"rotor-aldhu-crank-arms","title":"Rotor ALDHU crank arms","description":"\u003cp\u003eRotor ALDHU Track crank begins with 3D CNC machining of top-tier 7075-aeronautic grade aluminum to ensure unmatched rigidity.\u003c\/p\u003e\n\u003cp\u003eUtilizing a special manufacturing process named the “Trinity Drilling System\", where an extruded aluminum bar is intricately CNC machined with three internal holes through the length of the crank, the result is a unique triple hollow crank arm that enables Rotor’s engineers to remove the excess aluminum in the core, resulting in exceptionally light weight while still maintaining structural strength.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eALDHU crank arms must be paired with the \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 153, 221); text-decoration: underline;\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(0, 153, 221); text-decoration: underline;\" title=\"Rotor Track30 Spider \u0026amp; Axle\" href=\"https:\/\/www.retro-gression.com\/products\/rotor-track30-spider-axle\" target=\"_blank\"\u003eRotor Track30 Spider \u0026amp; Axle\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e (sold separately).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eⓘ \u003c\/strong\u003eProfessional assembly and installation using a torque wrench and following all published torque specifications is strongly recommended. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cp\u003e• length: 165mm, 170mm\u003c\/p\u003e\n\u003cp\u003e• chainline: 43mm\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e• Q-factor: 140mm\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e• includes preload collar and auto-extractor bolts \u003c\/p\u003e\n\u003cp\u003e• required bottom bracket: \u003cstrong\u003e\u003cspan style=\"color: #0099dd;\"\u003e\u003ca style=\"color: #0099dd;\" href=\"https:\/\/www.retro-gression.com\/products\/rotor-bsa30-track-bottom-bracket\" title=\"Rotor BSA30 Track bottom bracket\"\u003eRotor BSA30 Track\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e (sold separately)\u003c\/p\u003e\n\u003cp\u003e• color: black\u003c\/p\u003e\n\u003cp\u003e• weight: 334g (165mm), 350g (170mm)\u003c\/p\u003e\n\u003ch4\u003eBottom bracket compatibility\u003c\/h4\u003e\n\u003cp\u003eRotor AHLDU and VEGAST Track cranks must be used with Rotor’s BSA30 Track bottom bracket, which has thinner external cups than all other outboard bottom brackets designed for use with a 30mm axle.\u003c\/p\u003e\n\u003cp\u003eUsing a bottom bracket with thicker cups may technically seem possible, but the back of the disc spider will contact the drive side cup once installed and the non-drive side cup won’t leave enough of the axle splines exposed to properly secure the left crank arm, damaging the mounting interface.\u003c\/p\u003e","brand":"Rotor","offers":[{"title":"165mm","offer_id":43112306638909,"sku":"ALDHU165","price":289.0,"currency_code":"USD","in_stock":true},{"title":"170mm","offer_id":43112306671677,"sku":"ALDHU170","price":289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/4641\/files\/rotor_aldhu_crank_arms.jpg?v=1776372344","url":"https:\/\/www.retro-gression.com\/products\/rotor-aldhu-crank-arms","provider":"Retrogression","version":"1.0","type":"link"}