{"id":52337,"date":"2026-07-20T12:17:55","date_gmt":"2026-07-20T10:17:55","guid":{"rendered":"https:\/\/www.italpassion.fr\/?p=52337"},"modified":"2026-07-15T15:59:42","modified_gmt":"2026-07-15T13:59:42","slug":"un-preparador-japones-transforma-un-alfa-romeo-4c-en-un-coche-de-carreras-sin-tocar-el-motor-y-este-supera-a-sus-rivales-mas-potentes","status":"publish","type":"post","link":"https:\/\/www.italpassion.fr\/es\/alfa-romeo\/un-preparateur-japonais-transforme-une-alfa-romeo-4c-en-voiture-de-course-sans-toucher-au-moteur-elle-bat-ses-rivales-plus-puissantes\/","title":{"rendered":"Un preparador japon\u00e9s transforma un Alfa Romeo 4C en un coche de carreras sin tocar el motor: supera a sus rivales m\u00e1s potentes"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-tezzo-0.jpg\" alt=\"\" class=\"wp-image-52349\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-tezzo-0.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-tezzo-0-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-tezzo-0-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-tezzo-0-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La TEZZO RT1 es un modelo japon\u00e9s basado en <a href=\"https:\/\/www.italpassion.fr\/es\/coches\/alfa-romeo-4c\/\">Alfa Romeo 4C<\/a> realizada por TEZZO, un preparador especializado en los <a href=\"https:\/\/www.italpassion.fr\/es\/alfa-romeo\/\">Alfa Romeo<\/a>, Abarth, Fiat y Alpine. Sus coches participan habitualmente en el campeonato Alfa Romeo Challenge Japan.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfQu\u00e9 significa RT1?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RT1 es la abreviatura de \u00abRadial Tire No. 1\u00bb. \u00bfEl concepto? Desarrollar un coche capaz de alcanzar una velocidad extrema en circuito con neum\u00e1ticos homologados para carretera, y no con neum\u00e1ticos lisos. \u00a0TEZZO insiste en que estos coches deben seguir siendo agradables de conducir en carretera abierta. El eslogan que utilizan es, literalmente:<em>\u00abUn coche de carreras c\u00f3modo para circular por carretera.\u00bb<\/em>\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por lo tanto, la mayor parte del trabajo no se centra en la mec\u00e1nica, sino en el comportamiento din\u00e1mico, con numerosas piezas desarrolladas espec\u00edficamente en Jap\u00f3n, una filosof\u00eda inspirada en las carreras de carretera al estilo \u201cTouge\u201d.\u00a0\u00a0El objetivo del Alfa Romeo 4C RT1 no es aumentar la potencia, sino, sobre todo, hacer que el coche sea m\u00e1s estable a alta velocidad y m\u00e1s f\u00e1cil de manejar. Un coche muy equilibrado suele ser m\u00e1s r\u00e1pido que uno que simplemente tiene m\u00e1s potencia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u201cPoder acelerar antes sin tener miedo\u201d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Este proyecto se puso en marcha a finales de 2015 y principios de 2016. En un principio, el coche a\u00fan no era un RT1, sino un 4C con acabado \u201cluxury\u201d.\u00a0El objetivo es mejorar el coche de serie sin que resulte inc\u00f3modo. Las primeras modificaciones se centran en un escape \u201cQuattro LXY-S\u00bb, una admisi\u00f3n de carbono, un conjunto de v\u00e1lvulas roscadas TEZZO y llantas forjadas.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/ac-tezzo.jpg\" alt=\"\" class=\"wp-image-52340\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/ac-tezzo.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/ac-tezzo-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/ac-tezzo-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/ac-tezzo-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/jantes-tezzo.jpg\" alt=\"\" class=\"wp-image-52339\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/jantes-tezzo.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/jantes-tezzo-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/jantes-tezzo-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/jantes-tezzo-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/suspensions-tezzo.jpg\" alt=\"\" class=\"wp-image-52338\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/suspensions-tezzo.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/suspensions-tezzo-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/suspensions-tezzo-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/suspensions-tezzo-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-echappement.jpg\" alt=\"\" class=\"wp-image-52348\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-echappement.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-echappement-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-echappement-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-4c-echappement-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">El proyecto RT1 vio la luz en 2017 con el lanzamiento del programa de competici\u00f3n.\u00a0Los ingenieros identificaron varios problemas en el 4C original: una distancia entre ejes muy corta, un turbo muy brusco, una transici\u00f3n del subviraje al sobreviraje que puede resultar sorprendente y una falta de confianza a alta velocidad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A partir de ah\u00ed, se embarcan en un enorme trabajo sobre la geometr\u00eda, los amortiguadores, los muelles, el sistema de frenos, la calibraci\u00f3n electr\u00f3nica y la elecci\u00f3n de los neum\u00e1ticos, siempre homologados para circular por carretera. El objetivo: conseguir que el coche sea m\u00e1s f\u00e1cil de conducir al l\u00edmite.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9xito en las carreras<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A partir de 2018, el Tizzo RT1 se enfrent\u00f3 a sus rivales en las carreras del Alfa Romeo Challenge Japan.\u00a0El coche consigue la pole position en todas las categor\u00edas, por delante de varios GTA, ya en la primera prueba del campeonato, y luego logra la victoria absoluta en Fuji. TEZZO explica que la mayor parte de la ventaja no proviene del motor, sino de la capacidad del piloto para mantener el acelerador a fondo durante m\u00e1s tiempo.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-tezzo-2.jpg\" alt=\"\" class=\"wp-image-52341\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-tezzo-2.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-tezzo-2-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-tezzo-2-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-tezzo-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En 2019, el coche cambia menos en su aspecto exterior. Sin embargo, hay much\u00edsimos detalles que evolucionan. Se revisan los ajustes de la suspensi\u00f3n, la rigidez y el equilibrado, la reducci\u00f3n de peso y la calibraci\u00f3n de la ECU. Esta temporada sirve sobre todo para mejorar la fiabilidad del coche.\u00a0Explican que un aficionado gana m\u00e1s tiempo por vuelta con un coche predecible que con 40 o 50 ch adicionales. Consigue el t\u00edtulo de la AR4CS, es decir, la categor\u00eda dedicada exclusivamente al 4C, en la que compiten otros modelos preparados. Los ingenieros consideran entonces que el chasis ha alcanzado su madurez.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>La \u00faltima novedad: el aler\u00f3n RT1<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En 2020, el \u00faltimo paso fue la incorporaci\u00f3n del caracter\u00edstico aler\u00f3n trasero. Los ingenieros de TEZZO consideran que el 4C, debido a su distancia entre ejes muy corta, un centro de gravedad del motor relativamente alto, una respuesta del par del turbo bastante brusca y unas v\u00edas muy anchas, puede ofrecer un comportamiento nervioso con sobreviraje en las curvas r\u00e1pidas.\u00a0Por ello, han desarrollado un aut\u00e9ntico aler\u00f3n de competici\u00f3n destinado a generar carga aerodin\u00e1mica trasera.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-aileron.jpg\" alt=\"\" class=\"wp-image-52342\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-aileron.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-aileron-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-aileron-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/4c-aileron-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Este aler\u00f3n, fabricado en carbono h\u00famedo (wet carbon) con una estructura monocasco hueca, pesa solo 1,4 kg. En la versi\u00f3n 2 se ha incorporado un nuevo sistema de refuerzo interior para evitar la deformaci\u00f3n del maletero bajo fuertes cargas aerodin\u00e1micas. Dado que el maletero del Alfa Romeo 4C no es plano, TEZZO ha tenido que dise\u00f1ar soportes espec\u00edficos. A diferencia de muchos alerones de circuito, TEZZO ha querido mantener la conformidad con la inspecci\u00f3n t\u00e9cnica japonesa. Presentan el aler\u00f3n como un homenaje a su coche ganador, sin dejar de ser legal para su uso en carretera en Jap\u00f3n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-3.jpg\" alt=\"\" class=\"wp-image-52344\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-3.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-3-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-3-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-3-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-9.jpg\" alt=\"\" class=\"wp-image-52347\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-9.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-9-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-9-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-9-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-4.jpg\" alt=\"\" class=\"wp-image-52343\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-4.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-4-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-4-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-4-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-5.jpg\" alt=\"\" class=\"wp-image-52345\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-5.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-5-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-5-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-5-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-6.jpg\" alt=\"\" class=\"wp-image-52346\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-6.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-6-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-6-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2026\/07\/alfa-romeo-4c-tezzo-6-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Los resultados van de la mano de esta evoluci\u00f3n: 3 poles y 3 victorias absolutas en 5 pruebas del campeonato de 2020, adem\u00e1s del t\u00edtulo SR (Super Race, la categor\u00eda \u201c\u00e9lite\u201d) del campeonato de Kanto. Cabe precisar que el campeonato se divide en campeonatos regionales (entre ellos el de Kanto) y una final nacional. Al considerar que el desarrollo hab\u00eda concluido, Tezzo pas\u00f3, a partir de 2021, a un proyecto con el FIAT 124 Abarth.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"TEZZO Alfa Romeo 4C RT1: tiempo oficial en el circuito Forest Raceway de Sodegaura: 1 minuto y 13,753 segundos\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/piganVOmY9A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":8,"featured_media":52349,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"categories":[22],"tags":[424],"class_list":["post-52337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alfa-romeo","tag-alfa-romeo-4c","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - 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