{"product_id":"shimano-slx-fc-m7120-1-boost-crank","title":"Bielas Shimano SLX FC-M7120-1 Boost","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano SLX FC-M7120-1 Boost Crank\u003c\/strong\u003e sits in Shimano's SLX groupset — the upper tier of their trail-capable MTB lineup, sitting just below XT and XTR. Designed for single-chainring drivetrains, it pairs with 12-speed SLX systems and brings Shimano's proven engineering to riders who want reliable, capable performance on technical terrain without stepping up to the top of the range. Three arm lengths — 165mm, 170mm, and 175mm — let you match the crank to your fit and riding style.\u003c\/p\u003e\n\n\u003cp\u003eThe FC-M7120-1 is built around Shimano's \u003cstrong\u003eHollowtech II\u003c\/strong\u003e crank arm construction, which routes the spindle through the drive-side arm to reduce weight while maintaining stiffness under load. The Boost chainline — 52mm — is engineered to work with Boost-spaced frames, keeping chain alignment tight across the cassette and supporting the wider rear hub spacing that's now standard across most modern trail and enduro geometry. The crank is designed to run a direct-mount chainring, giving you a clean, rattle-free interface and the flexibility to swap ring sizes as your trails demand.\u003c\/p\u003e\n\n\u003ch3\u003eShimano SLX FC-M7120-1 Boost Crank Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eGroupset: Shimano SLX M7100 series, 12-speed\u003c\/li\u003e\n  \u003cli\u003eChainring compatibility: Single direct-mount (1x only)\u003c\/li\u003e\n  \u003cli\u003eBoost chainline: 52mm\u003c\/li\u003e\n  \u003cli\u003eCrank arm construction: Hollowtech II\u003c\/li\u003e\n  \u003cli\u003eAvailable arm lengths: 165mm, 170mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eBottom bracket interface: Shimano Hollowtech II (24mm spindle)\u003c\/li\u003e\n  \u003cli\u003eColor: Black\u003c\/li\u003e\n  \u003cli\u003eIntended use: Trail, enduro, all-mountain MTB\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoost-optimized chainline for modern frames:\u003c\/strong\u003e The 52mm Boost chainline is designed to work seamlessly with Boost-spaced frames — the geometry standard found across the vast majority of current trail and enduro bikes. This keeps chain angles consistent and reduces wear across the full range of your 12-speed cassette.\u003c\/li\u003e\n  \u003cli\u003eDirect-mount chainring interface: Rather than using a spider, the FC-M7120-1 accepts a direct-mount ring that sits flush against the crank arm. This eliminates flex points and keeps the drivetrain quieter and more precise on rough descents where a spider-mounted setup might rattle or flex under hard pedaling.\u003c\/li\u003e\n  \u003cli\u003eFit-tuned arm length options: Crank arm length affects both biomechanical efficiency and ground clearance on technical lines. With 165mm, 170mm, and 175mm options available, you can dial in the setup that matches your inseam, riding style, and the type of terrain you spend most of your time on — whether that's flowy singletrack or aggressive chunk.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Negro \/ 165 mm","offer_id":43520521797676,"sku":"IFCM71201AXX","price":130.0,"currency_code":"USD","in_stock":true},{"title":"Negro \/ 170 mm","offer_id":43520521830444,"sku":"IFCM71201CXX","price":130.0,"currency_code":"USD","in_stock":true},{"title":"Negro \/ 175 mm","offer_id":43520521863212,"sku":"IFCM71201EXX","price":130.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/ricycles.com\/es\/products\/shimano-slx-fc-m7120-1-boost-crank","provider":"RA Cycles","version":"1.0","type":"link"}