{"product_id":"branta-carbon-stem-x-lab-gt8","title":"Branta Carbon Stem for X-LAB GT8 — 31.8 mm","description":"\u003ch2\u003eFine-tune the fit of your X-LAB GT8\u003c\/h2\u003e\u003cp\u003eThe Branta carbon fiber stem for the X-LAB GT8 connects your handlebar to the fork steerer and helps set your reach to the controls. Choose from \u003cstrong\u003e70, 80, 90 or 100 mm\u003c\/strong\u003e lengths to match your existing setup or a bike-fit recommendation.\u003c\/p\u003e\u003cp\u003eThe GT8 uses a separate stem and handlebar. That lets you change stem length while keeping a compatible handlebar, rather than replacing a complete integrated cockpit.\u003c\/p\u003e\u003ch2\u003eChoose your stem length\u003c\/h2\u003e\u003cp\u003eWith the rest of your setup unchanged, a shorter stem brings the handlebar closer; a longer stem moves it farther away. Stem length can also change how the steering feels. Start with the length of your current stem and the position you want to achieve, rather than choosing by rider height alone.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e70 mm:\u003c\/strong\u003e shortest option in this range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80 mm:\u003c\/strong\u003e 10 mm longer than the 70 mm option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90 mm:\u003c\/strong\u003e 10 mm longer than the 80 mm option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 mm:\u003c\/strong\u003e longest option in this range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eApplication: X-LAB GT8\u003c\/li\u003e\n\u003cli\u003eMaterial: carbon fiber\u003c\/li\u003e\n\u003cli\u003eAvailable lengths: 70, 80, 90 and 100 mm\u003c\/li\u003e\n\u003cli\u003eHandlebar clamp diameter: 31.8 mm\u003c\/li\u003e\n\u003cli\u003eFork steerer clamp diameter: 28.6 mm (1-1\/8 inch)\u003c\/li\u003e\n\u003cli\u003eListed stem height: 40 mm\u003c\/li\u003e\n\u003cli\u003eFinish: black with Branta branding\u003c\/li\u003e\n\u003cli\u003eSold as one stem in the selected length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCheck the complete fit\u003c\/h2\u003e\u003cp\u003eThe 31.8 mm measurement is the handlebar's diameter where the stem clamps it. The 28.6 mm measurement is the fork steerer diameter at the stem. These are two different fit points, and both need to match.\u003c\/p\u003e\u003cp\u003eFor a GT8 replacement, also check the headset cover, spacers, available steerer length and cable or hose clearance. Matching clamp diameters alone does not establish compatibility with another bicycle. Have your mechanic follow the component and frame installation instructions, including the applicable torque limits.\u003c\/p\u003e\u003ch2\u003eCommon questions\u003c\/h2\u003e\u003ch3\u003eDoes this include a handlebar?\u003c\/h3\u003e\u003cp\u003eNo. This listing is for the stem. A compatible 31.8 mm handlebar is separate.\u003c\/p\u003e\u003ch3\u003eIs 40 mm the amount it raises my handlebar?\u003c\/h3\u003e\u003cp\u003eNo. The dealer lists 40 mm as the stem height; it is not a handlebar-rise measurement. Your final bar position also depends on the stem geometry, headset and spacer arrangement.\u003c\/p\u003e\u003ch3\u003eWhich length should I choose?\u003c\/h3\u003e\u003cp\u003eMatch your current stem for a like-for-like length replacement, or use a bike-fit recommendation when changing your riding position. Go Grava can help you compare your current setup with these four options.\u003c\/p\u003e","brand":"XDS","offers":[{"title":"70 mm","offer_id":54067788087610,"sku":"GG-BRANTA-GT8-STEM-70","price":150.0,"currency_code":"USD","in_stock":true},{"title":"80 mm","offer_id":54067788120378,"sku":"GG-BRANTA-GT8-STEM-80","price":150.0,"currency_code":"USD","in_stock":true},{"title":"90 mm","offer_id":54067788153146,"sku":"GG-BRANTA-GT8-STEM-90","price":150.0,"currency_code":"USD","in_stock":true},{"title":"100 mm","offer_id":54067788185914,"sku":"GG-BRANTA-GT8-STEM-100","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5735\/8394\/files\/9303-00093_R8-1-5.png?v=1789478207","url":"https:\/\/gograva.com\/products\/branta-carbon-stem-x-lab-gt8","provider":"Grava Adventure Corporation","version":"1.0","type":"link"}