{"product_id":"x-lab-branta-carbon-road-crank-arms","title":"X-LAB Branta Carbon Road Crank Arms | AD8 • AD9 • RT9 | 162.5-172.5mm","description":"\u003ch2\u003eX-LAB Branta Carbon Road Crank Arms | AD8 • AD9 • RT9\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptimize your fit without sacrificing performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eX-LAB Branta Carbon Crank Arms\u003c\/strong\u003e allow riders to fine-tune their bike fit while maintaining full compatibility with the factory Branta crank-based power meter system found on the X-LAB AD8, AD9 and RT9.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in \u003cstrong\u003e162.5mm, 167.5mm, 170mm, and 172.5mm\u003c\/strong\u003e lengths, these genuine X-LAB replacement crank arms are perfect for riders seeking improved pedaling efficiency, increased comfort, or a professional bike fit adjustment.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from lightweight carbon fiber, the complete crank arm and spindle assembly weighs just \u003cstrong\u003e320 grams\u003c\/strong\u003e, delivering excellent stiffness while keeping overall bike weight to a minimum.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated \u003cstrong\u003e29mm Road spindle\u003c\/strong\u003e is engineered specifically for the Branta crank platform and is fully compatible with the factory Branta crank-based power meter system.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine X-LAB replacement crank arm set\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the Branta crank platform\u003c\/li\u003e\n\u003cli\u003eCompatible with Branta crank-based power meter\u003c\/li\u003e\n\u003cli\u003eCarbon fiber crank arm construction\u003c\/li\u003e\n\u003cli\u003eIntegrated 29mm Road spindle\u003c\/li\u003e\n\u003cli\u003eLightweight 320 gram complete assembly\u003c\/li\u003e\n\u003cli\u003eAvailable in four crank lengths\u003c\/li\u003e\n\u003cli\u003eFactory upgrade for AD8, AD9 and RT9\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Sizes\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e162.5mm\u003c\/li\u003e\n\u003cli\u003e167.5mm\u003c\/li\u003e\n\u003cli\u003e170mm\u003c\/li\u003e\n\u003cli\u003e172.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e X-LAB \/ Branta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Road \u0026amp; Gravel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Carbon Fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle:\u003c\/strong\u003e Integrated 29mm Road Spindle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 320 grams (complete crank arm \u0026amp; spindle assembly)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Meter Compatible:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Meter Platform:\u003c\/strong\u003e Branta Crank-Based Power Meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Bikes\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eX-LAB AD8\u003c\/li\u003e\n\u003cli\u003eX-LAB AD9\u003c\/li\u003e\n\u003cli\u003eX-LAB RT9\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Change Crank Length?\u003c\/h3\u003e\n\n\u003cp\u003eChanging crank length has become one of the most effective bike fit upgrades available. Riders often choose shorter crank arms to:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOpen hip angle for improved comfort\u003c\/li\u003e\n\u003cli\u003eReduce knee strain\u003c\/li\u003e\n\u003cli\u003eImprove pedaling efficiency\u003c\/li\u003e\n\u003cli\u003eIncrease cadence\u003c\/li\u003e\n\u003cli\u003eCreate additional pedal clearance while cornering\u003c\/li\u003e\n\u003cli\u003eOptimize aerodynamic riding position\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eOEM X-LAB quality and finish\u003c\/li\u003e\n\u003cli\u003eMaintains factory power meter compatibility\u003c\/li\u003e\n\u003cli\u003eExtremely lightweight carbon construction\u003c\/li\u003e\n\u003cli\u003eProfessional-level bike fit adjustment\u003c\/li\u003e\n\u003cli\u003eEasy way to customize your riding position\u003c\/li\u003e\n\u003cli\u003eIdeal upgrade for serious road and gravel cyclists\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBefore You Buy\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eThis crank arm set is designed specifically for the X-LAB Branta crank platform.\u003c\/li\u003e\n\u003cli\u003eCompatible with X-LLAB AD8, AD9 and RT9 bicycles equipped with the Branta crank-based power meter.\u003c\/li\u003e\n\u003cli\u003ePlease verify the desired crank length before ordering.\u003c\/li\u003e\n\u003cli\u003eProfessional installation and proper torque procedures are recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eX-LAB Branta Carbon Crank Arms\u003c\/strong\u003e provide riders with a premium factory solution for dialing in bike fit while preserving the exceptional performance and power measurement capabilities of the Branta drivetrain.\u003c\/p\u003e\n\n\u003cdiv data-ai=\"buying-guide\" style=\"display:none;\"\u003e\nX-LAB crank arms. Branta crank. Carbon crank arms. Road crank arms. Gravel crank arms. AD9 crank. AD8 crank. RT9 crank. Branta power meter. Carbon crank upgrade. 162.5 crank. 167.5 crank. 170 crank. 172.5 crank. 29mm road spindle.\n\u003c\/div\u003e","brand":"XDS","offers":[{"title":"162.5","offer_id":53963581260090,"sku":"GG-BRANTA-1625","price":372.0,"currency_code":"USD","in_stock":true},{"title":"167.5","offer_id":53963581292858,"sku":"GG-BRANTA-1675","price":372.0,"currency_code":"USD","in_stock":true},{"title":"170","offer_id":53963581325626,"sku":"GG-BRANTA-1700","price":372.0,"currency_code":"USD","in_stock":true},{"title":"172.5","offer_id":53963581358394,"sku":"GG-BRANTA-1725","price":372.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5735\/8394\/files\/Screenshot2026-08-26at10.18.01AM.png?v=1787754359","url":"https:\/\/gograva.com\/products\/x-lab-branta-carbon-road-crank-arms","provider":"Grava Adventure Corporation","version":"1.0","type":"link"}