{"product_id":"middleburn-ro2-road-x-type-crank-for-external-bottom-bracket-black-170mm","title":"MIDDLEBURN RO2 ROAD X-TYPE CRANK FOR EXTERNAL BOTTOM BRACKET - Black \/ 170mm","description":"\u003cp\u003eMiddleburn RO2 X-Type Cranks are precision-engineered for road cyclists who demand strength, stiffness, and lightweight performance. These RO2 bike cranks come complete with a 24mm axle, axle nuts, and all necessary fittings, designed for use with any external bottom bracket using 24mm bearings, as per HollowTech2 standards.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Middleburn RO2-X-175 crankset (including the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/mountainbikecomponents.co.uk\/products\/ro2-94bcd-double-road\"\u003eSP-RO2-X-94-X2 spider\u003c\/a\u003e) weighs approximately 568g including all fittings, with a Q-factor of around 153mm, providing optimal pedalling efficiency and comfort. All Middleburn RO2 road bike cranks are fitted with a 24mm axle compatible with HollowTech2-style bottom brackets for a secure and reliable fit.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFirst developed in 1991, Middleburn cranks have undergone continuous refinement. The RO2 X-Type design is the latest in road bike crank technology, engineered to work with external bottom brackets and push-fit systems (with the appropriate axle). Advanced 3D stress modelling ensures these cranks are among the stiffest yet lightest road bike cranks available.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eCrafted from hot forged 7075 T6 aluminium, each crank is CNC machined, hand-polished, anodised, and re-machined with the Middleburn logo, guaranteeing consistent precision and quality across every arm.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe image shows an RO2 crankset built with the SP-RO2-X-94-X2 spider, paired with dedicated 11-speed 46\/30 chainrings and stainless-steel bolt set. If you order a\u003cspan\u003e \u003c\/span\u003espider\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003eUNO chainring\u003cspan\u003e \u003c\/span\u003ewith your cranks, we can mount it for you before shipping; just add a note at checkout.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features of Middleburn RO2 Road X-Type Cranks\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eStiff and lightweight aluminium construction\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eOptimised Q-factor for road cycling efficiency\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eCompatible with 68mm bottom bracket shells \u0026amp; 24mm HollowTech2-style bottom brackets\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eCNC machined, hand-polished, and anodised for precision\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eMultiple lengths and finishes to suit your bike\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eProven design trusted since 1991.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRO2 cranks are now sipplied with a flat stainless steel axle spacer that fits against the lockring and enables you to use any bottom bracket including those with the recessed bearing seal such as Shimano Dura Ace or Hope. \u003c\/p\u003e","brand":"Middleburn","offers":[{"title":"Default Title","offer_id":57032783659386,"sku":"RO2-X-170-BLACK","price":202.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0269\/3477\/1789\/files\/No_Image_-_Gone_Riding_500px_c4dd471f-dfbb-4781-b509-b608d92c0edb.png?v=1713613174","url":"https:\/\/slam69.co.uk\/products\/middleburn-ro2-road-x-type-crank-for-external-bottom-bracket-black-170mm","provider":"Slam69","version":"1.0","type":"link"}