{"product_id":"rotor-aldhu-3d-crank-arms","title":"Rotor Aldhu Alloy Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor Aldhu Alloy Crank Arms\u003c\/strong\u003e are built from 7055 aluminium and CNC-machined down to the minimum material needed to keep them stiff and light — Rotor's Trinity drilling hollows out the arms without sacrificing power transfer where it matters. Named after Alpe d'Huez, the Aldhu system was designed with climbing in mind: low weight, high rigidity, and a modular build that gives you real flexibility in how you set up your drivetrain.\u003c\/p\u003e\n\n\u003cp\u003eThese are crank arms only — part of Rotor's component system that separates the arms, spindle, spider, and chainrings into individual purchases. That modularity is the point. The spider mounts onto splines on the bottom bracket spindle, the right arm onto its own spline set, and the whole assembly locks to the axle with a degree-by-degree adjustment range — useful when you're dialling in chainring position, particularly with Rotor's Q-rings. Compatible bottom bracket standards include BB30, BB386, PF30, PF4130, PF4630, and UBB30. Arms are secured with bolts tightened via a 10mm hex wrench.\u003c\/p\u003e\n\n\u003ch3\u003eRotor Aldhu Alloy Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7055 aluminium, CNC-machined with Trinity drilling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable lengths:\u003c\/strong\u003e 150mm, 155mm, 160mm, 165mm, 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBB compatibility:\u003c\/strong\u003e BB30, BB386, PF30, PF4130, PF4630, UBB30\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt fitting:\u003c\/strong\u003e 10mm hex wrench\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Spindle, spider, chainrings, and bottom bracket sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black \/ 150mm","offer_id":43517795205164,"sku":"C02-102-11010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 155mm","offer_id":43517795237932,"sku":"C02-102-13010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 160mm","offer_id":43517795270700,"sku":"C02-102-15010-0","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 165mm","offer_id":43517795303468,"sku":"C02-102-17010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43517795336236,"sku":"C02-102-19010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 172.5mm","offer_id":43517795369004,"sku":"C02-102-20010-0","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 175mm","offer_id":43517795401772,"sku":"C02-102-21010-0","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-aldhu-alloy-crank-arms-9275489.jpg?v=1771298648","url":"https:\/\/ricycles.com\/products\/rotor-aldhu-3d-crank-arms","provider":"RA Cycles","version":"1.0","type":"link"}