{"title":"ULTRADYNAMICO","description":"\u003cp\u003eUltradynamico is a tire brand from California, USA. They offer two compounds, JFF (Just Fucking Fast) and Race, for their gravel models like the Rose and Cava, and road-oriented models like the Mars. With their beautiful tan sidewalls and supple casings, they are gaining attention from all-road and gravel riders.\u003c\/p\u003e","products":[{"product_id":"ec-2407121631","title":"ULTRADYNAMICO Cava Race Tire (700c x 33.??) [Gray \/ Amber] Ultralight Dynamic Tire","description":"\u003cp\u003eRonnie, aka Ultradynamico, and his longtime friend Patrick are self-proclaimed bike geeks, with a particular obsession for tires – tire fetishes, if you will.\u003cbr\u003e\u003cbr\u003eIt was these two who founded the tire brand \"ULTRADYNAMICO.\"\u003cbr\u003e\u003cbr\u003eThe CAVA is a minimalist tire for those who seek the speed of high-volume slick tires and traction on loose surfaces.\u003cbr\u003e\u003cbr\u003eThe 700c x 33.?? is a classic \"road\" tire perfect for cobblestones and farm roads (not suitable for gravel or unpaved roads).\u003cbr\u003e\u003cbr\u003eThis is the RACE specification, featuring a high TPI casing and zero sidewall protection, pursuing a supple ride and light running.\u003cbr\u003e\u003cbr\u003eFor touring with luggage on rough terrain or for aggressive riders who frequently puncture, we recommend the ROBUSTO specification.\u003cbr\u003e\u003cbr\u003eFeatures a race compound that provides excellent grip in all conditions.\u003cbr\u003e\u003cbr\u003eTubeless compatible (TLC). Enjoy a superior ride at low pressure.\u003cbr\u003e\u003cbr\u003eMADE IN JAPAN\u003cbr\u003e\u003cbr\u003eSPEC\u003cbr\u003eSize: 700c × 33.?? (≒33)\u003cbr\u003eWeight: 265g\u003cbr\u003eRecommended Pressure: TLC MAX 400kPa, TUBED MAX 585kPa\u003cbr\u003e\u003cbr\u003eCOLOR\u003cbr\u003eGRAY\/TAN ／ AMBER\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Grumpy Bike Shop","offers":[{"title":"700c x 33.?? (approx. 33) \/ GRAY","offer_id":49140398489902,"sku":"ec-2407121631-70033-gry1","price":12100.0,"currency_code":"JPY","in_stock":false},{"title":"700c x 33.?? (approx. 33) \/ AMBER","offer_id":49140455407918,"sku":"ec-2407121631-70033-grn1","price":12100.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/178292666.webp?v=1720770872"},{"product_id":"ec-2407121712","title":"ULTRADYNAMICO Cava Race Tire [Gray]","description":"Ultraromance, aka Ronnie, and his longtime friend Patrick are self-proclaimed bike geeks and tire fetishists with a particular obsession for tires.\u003cbr\u003e\n\u003cbr\u003e\n\"ULTRADYNAMICO\" is the tire brand they founded.\u003cbr\u003e\n\u003cbr\u003e\nThe CAVA is a minimalist tire for those seeking the speed of a high-volume slick tire and traction on loose surfaces.\u003cbr\u003e\n\u003cbr\u003e\nThe fine 3D diamond file tread grips the road, providing 20-30% more traction than a slick tire.\u003cbr\u003e\n\u003cbr\u003e\nIt's slightly wider than the ROSE tire, but the effective outer diameter, considering knob height, is the same. It's designed to be used in combination, for example, with a ROSE on the front and a CAVA on the rear.\u003cbr\u003e\n\u003cbr\u003e\nThis is the RACE specification, featuring a high TPI casing and zero side protection, designed for a supple ride and light running.\u003cbr\u003e\n\u003cbr\u003e\nFor aggressive riders who frequently get flats or tour with luggage on rough terrain, we recommend the ROBUSTO specification.\u003cbr\u003e\u003c!--nl--\"\u003e\u003cbr\u003e\nIt uses a race compound that provides excellent grip in all conditions.\u003cbr\u003e\n\u003cbr\u003e\nTubeless compatible (TLC). Please enjoy the excellent ride comfort at low pressure.\u003cbr\u003e\n\u003cbr\u003e\nMADE IN JAPAN\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nSPEC\u003cbr\u003e\n650b x 47.99 (≒48): Weight 490g, Recommended internal pressure MAX 350kPa\u003cbr\u003e\n27.5\" x 2.2?? (≒2.25): Weight 525g, Recommended internal pressure MAX 240kPa\u003cbr\u003e\n700c x 39.?? (≒39): Weight 340g, Recommended internal pressure MAX 400kPa\u003cbr\u003e\n700c x 42.?? (≒42): Weight 445g, Recommended internal pressure MAX 350kPa\u003cbr\u003e\n\u003cbr\u003e\nCOLOR\u003cbr\u003e\nGRAY\/TAN\u003cbr\u003e\n","brand":"Grumpy Bike Shop","offers":[{"title":"650b x 47.99 \/ GRAY","offer_id":49140530250030,"sku":"ec-2407121712-6504799-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"27.5\" x 2.2? \/ GRAY","offer_id":49140554891566,"sku":"ec-2407121712-27522-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"700c x 39.? \/ GRAY","offer_id":49140554957102,"sku":"ec-2407121712-70039-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"700c x 42.?? \/ GRAY","offer_id":49140555022638,"sku":"ec-2407121712-70042-gry1","price":14300.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/178292657.webp?v=1720771848"},{"product_id":"ec-2407121726","title":"ULTRADYNAMICO rose race tire [gray]","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eRonnie, also known as Ultraromance, and his long-time friend Patrick are self-proclaimed bike geeks and, in particular, tire fanatics with an extraordinary passion for tires.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe tire brand \"ULTRADYNAMICO\" was founded by these two individuals.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eROSE is \"ULTRADYNAMICO's\" first product, a classic tire that excels on both dirt and road.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe continuously arranged delta knobs in the center provide light rolling resistance when propelled and reliable braking traction.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe CAVA tire is slightly wider, and since the effective outer diameter is the same when considering the knob height, it's recommended to use ROSE on the front and CAVA on the rear.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis is the RACE specification, featuring a high TPI casing and zero side protection, designed for a supple ride and light, nimble performance.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFor aggressive riders who tour with luggage on rough terrain or frequently experience punctures, we recommend the ROBUSTO specification.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt uses a race compound that provides excellent grip in all conditions.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTubeless compatible (TLC). Please enjoy the excellent ride comfort at low pressure.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv id=\"tit-spec\"\u003e\u003cstrong\u003eSPEC\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"txt-spec\"\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e650b×47.99(≒48): Weight 490g, Recommended internal pressure MAX 350kPa\u003c\/li\u003e\n\n\u003cli\u003e700c×42.??(≒42): Weight 465g, Recommended internal pressure MAX 350kPa\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv id=\"tit-color\"\u003e\u003cstrong\u003eCOLOR\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"txt-spec\"\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eGRAY\/TAN\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e","brand":"Grumpy Bike Shop","offers":[{"title":"650b×47.99 \/ GRAY","offer_id":49140599161134,"sku":"ec-2407121726-6504799-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"700c x 42.?? \/ GRAY","offer_id":49140599259438,"sku":"ec-2407121726-70042-gry1","price":14300.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/178292714.webp?v=1720772634"},{"product_id":"ec-2407121738","title":"ULTRADYNAMICO Mars Race Tire [Gray \/ Red]","description":"\u003cp\u003eUltraromance, a.k.a. Ronnie, and his longtime friend Patrick are self-proclaimed bike geeks, with a particular obsession with tires, making them true tire fetishes.\u003cbr\u003e\u003cbr\u003eIt was these two who founded the tire brand \"ULTRADYNAMICO.\"\u003cbr\u003e\u003cbr\u003eThe MARS tire features a continuous line of delta knobs down the center, providing light rolling resistance during propulsion and reliable braking traction.\u003cbr\u003e\u003cbr\u003eLarge, sharply angled side knobs ensure cornering stability.\u003cbr\u003e\u003cbr\u003eThe wide-spaced tread pattern also offers excellent mud shedding.\u003cbr\u003e\u003cbr\u003eThis is the RACE specification, with a high TPI casing and zero side protection, designed for a supple ride and light, nimble performance.\u003cbr\u003e\u003cbr\u003eFor aggressive riders who tour on rough terrain with luggage or frequently experience punctures, we recommend the ROBUSTO specification.\u003cbr\u003e\u003cbr\u003eIt uses a race compound that provides excellent grip in all conditions.\u003cbr\u003e\u003cbr\u003eTubeless Compatible (TLC). Please enjoy the superb ride quality at low pressure.\u003cbr\u003e\u003cbr\u003eMADE IN JAPAN\u003cbr\u003e\u003cbr\u003eSPEC\u003cbr\u003e\n26\" x 2.2?? (≒2.3): Weight 600g, Recommended internal pressure MAX 240kPa\u003cbr\u003e\n27.5\" x 2.2?? (≒2.3): Weight 605g, Recommended internal pressure MAX 240kPa\u003cbr\u003e\n29\" x 2.2?? (≒2.3): Weight 625g, Recommended internal pressure MAX 240kPa\u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003eCOLOR\u003cbr\u003eRED \/ GRAY\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Grumpy Bike Shop","offers":[{"title":"26\"x2.2? \/ GRAY","offer_id":49140671512878,"sku":"ec-2407121738-2622-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"26\"x2.2? \/ RED","offer_id":49140639007022,"sku":"ec-2407121738-2622-red1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"27.5\" x 2.2? \/ GRAY","offer_id":49140684095790,"sku":"ec-2407121738-27522-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"27.5\" x 2.2? \/ RED","offer_id":49140684128558,"sku":"ec-2407121738-27522-red1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"29\"x2.2? \/ GRAY","offer_id":49140684161326,"sku":"ec-2407121738-2922-gry1","price":14300.0,"currency_code":"JPY","in_stock":false},{"title":"29\"x2.2? \/ RED","offer_id":49140684194094,"sku":"ec-2407121738-2922-red1","price":14300.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/178292746.webp?v=1720773413"},{"product_id":"ec-2409232210","title":"ULTRADYNAMICO alt font cap","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eRonnie, also known as Ultraromance, and his longtime friend Patrick are self-proclaimed bike geeks and, in particular, tire fetishists with an extraordinaryこだわり for tires.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe tire brand \"ULTRADYNAMICO\" was founded by these two.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThese traditional-style cycling caps are made in an old-established Italian factory.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThey are made from a soft, quick-drying blend of polyester and cotton.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eMADE IN ITALY\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eMaterial: Polyester, Cotton\u003c\/li\u003e\n\n\u003cli\u003eSize: Free\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e[ ec-2409232210 ]\u003c\/p\u003e","brand":"Grumpy Bike Shop","offers":[{"title":"natural","offer_id":49399787454766,"sku":"ec-2409232210-wht1","price":3850.0,"currency_code":"JPY","in_stock":false},{"title":"gray","offer_id":49399787487534,"sku":"ec-2409232210-gry1","price":3850.0,"currency_code":"JPY","in_stock":false},{"title":"緑","offer_id":49399787847982,"sku":"ec-2409232210-grn1","price":3850.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/cap-1.webp?v=1726812724"},{"product_id":"ultradynamico-mars-jff-tire-black","title":"ULTRADYNAMICO mars JFF tire black","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eRonnie, also known as Ultraromance, and his long-time friend Patrick are self-proclaimed bike geeks and tire fetishists with a particular obsession for tires.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe tire brand \"ULTRADYNAMICO\" was founded by these two individuals.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe MARS tire features a continuous row of delta knobs in the center, providing both light rolling resistance during propulsion and reliable braking traction.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLarge, sharp side knobs ensure stable cornering.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe wide-spaced tread pattern also offers excellent mud shedding.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis is the most affordable option in the lineup, the JFF (=Just For Fun) specification, which offers an excellent balance of performance and price.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eBy using a slightly thicker casing than the RACE specification, durability is improved while maintaining flexibility.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt uses a carbon compound to extend tread life on paved roads.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTubeless Compatible (TLC). Please enjoy the excellent ride comfort at low pressure.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eMADE IN JAPAN\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv id=\"spec_border\"\u003e\n\n\u003cdiv id=\"tit-spec\"\u003e\u003cstrong\u003eSPEC\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv id=\"txt-spec\"\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e26\"×2.2??(≒2.3): Weight 605g, Recommended Pressure 20-30psi (MAX 35psi)\u003c\/li\u003e\n\n\u003cli\u003e27.5\"×2.2??(≒2.3): Weight 625g, Recommended Pressure 20-30psi (MAX 35psi)\u003c\/li\u003e\n\n\u003cli\u003e29\"×2.2??(≒2.3): Weight 665g, Recommended Pressure 20-30psi (MAX 35psi)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Grumpy Bike Shop","offers":[{"title":"26x2.2 (approx. 2.3)","offer_id":51257062261038,"sku":null,"price":11000.0,"currency_code":"JPY","in_stock":false},{"title":"27.5×2.2?? (≈2.3)","offer_id":51257062293806,"sku":null,"price":11000.0,"currency_code":"JPY","in_stock":true},{"title":"29 × 2.2? (≈ 2.3)","offer_id":51257062326574,"sku":null,"price":11000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3919\/5064\/files\/178292742_jpg.webp?v=1762772904"}],"url":"https:\/\/www.grumpy.jp\/en\/collections\/ultradynamico-%e3%82%a6%e3%83%ab%e3%83%88%e3%83%a9%e3%83%80%e3%82%a4%e3%83%8a%e3%83%9f%e3%82%b3.oembed","provider":"Grumpy Bike Shop","version":"1.0","type":"link"}