{"id":7894,"date":"2026-05-22T10:00:00","date_gmt":"2026-05-22T01:00:00","guid":{"rendered":"https:\/\/www.spoonsports.jp\/blog\/?p=7894"},"modified":"2026-05-22T09:05:55","modified_gmt":"2026-05-22T00:05:55","slug":"%e3%80%90%e6%96%b0%e8%a3%bd%e5%93%81%e3%80%91progressive-springbf1","status":"publish","type":"post","link":"https:\/\/www.spoonsports.jp\/blog\/?p=7894","title":{"rendered":"\u3010\u65b0\u88fd\u54c1\u3011PRELUDE BF1\u7528 PROGRESSIVE SPRING"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

*English follows Japanese<\/p>\n\n\n\n

SPOON\u3067\u306f\u65b0\u305f\u306bPRELUDE BF1\u7528 PROGRESSIVE SPRING\u3092\u767a\u58f2\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

SPOON SPORTS has newly released the PROGRESSIVE SPRING for PRELUDE BF1.<\/p>\n\n\n\n

\u30b9\u30d7\u30ea\u30f3\u30b0\u306e\u5f62\u72b6\u306f\u6a3d\u578b\u30b9\u30d7\u30ea\u30f3\u30b0\u3092\u63a1\u7528\u3057\u307e\u3057\u305f\u3002
\u6a3d\u578b\u30b9\u30d7\u30ea\u30f3\u30b0\u306f\u4e00\u822c\u7684\u306a\u76f4\u5dfb\u304d\u30b9\u30d7\u30ea\u30f3\u30b0\u3068\u9055\u3044\u3001\u30b9\u30d7\u30ea\u30f3\u30b0\u306e\u76f4\u5f84\uff08\u5dfb\u304d\u306e\u5927\u304d\u3055\uff09\u306e\u9055\u3044\u304b\u3089\u8907\u6570\u306e\u30ec\u30fc\u30c8\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n

We adopted a barrel-shaped spring design.
Unlike conventional straight-wound springs, barrel-shaped springs can provide multiple spring rates due to differences in the spring diameter (coil size).<\/p>\n\n\n\n

\u3053\u306e\u5f62\u72b6\u306b\u3088\u308b\u7279\u6027\u3092\u751f\u304b\u3057\u3001\u4e57\u308a\u5fc3\u5730\u3092\u53f8\u308b1G\u4ed8\u8fd1\u306f\u4f4e\u3044\u30ec\u30fc\u30c8\u3001\u30cf\u30a4\u30b9\u30d4\u30fc\u30c9\u30b3\u30fc\u30ca\u30fc\u3067\u306f\u9ad8\u3044\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3067\u304d\u308b\u30b5\u30b9\u30da\u30f3\u30b7\u30e7\u30f3\u3092\u5b9f\u73fe\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

By taking advantage of the characteristics of this shape, we achieved a suspension setup that uses a lower spring rate around the 1G load range\u2014where ride comfort is most important\u2014and a higher spring rate during high-speed cornering.<\/p>\n\n\n\n

\u30b9\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u306f\u3001\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3084\u30df\u30cb\u30b5\u30fc\u30ad\u30c3\u30c8\u7b49\u3001\u69d8\u3005\u306a\u30b9\u30c6\u30fc\u30b8\u3067\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u30d5\u30ed\u30f3\u30c84.5kgf\/mm\u3001 \u30ea\u30a25.1kgf\/mm\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

The spring rates were tested across various conditions, including winding roads and mini circuits, and were set at 4.5 kgf\/mm for the front and 5.1 kgf\/mm for the rear.<\/p>\n\n\n\n

\u203b\u524d\u5f8c\u30d0\u30f3\u30d7\u30e9\u30d0\u30fc\u306f20\uff4d\uff4d\u30ab\u30c3\u30c8\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002
The front and rear bump rubbers must be trimmed by 20 mm.<\/p>\n\n\n\n

\u5546\u54c1\u540d\uff1aPROGRESSIVE SPRING,BF1<\/font><\/a>
\u5546\u54c1\u756a\u53f7\uff1a51400-BF1-001
\u9069\u5408\u8eca\u7a2e\uff1a BF1
\u5b9a\u4fa1\uff1a57,200\u5186\uff08\u7a0e\u8fbc\uff09
\u533a\u5206\uff1aS<\/p>\n\n\n\n

Product name\uff1aPROGRESSIVE SPRING,BF1
Product number\uff1a51400-BF1-001
Compatible models\uff1aBF1
Price\uff1a\u00a557,200\uff08Tax included\uff09
Code: S<\/p>\n\n\n\n

\u8eca\u9ad8\u30c0\u30a6\u30f3\u91cf\/Ride height\uff1a\u3000FRONT\u3000-20mm
\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 \u3000REAR\u3000 -20mm<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

*English follows Japanese SPOON\u3067\u306f\u65b0\u305f\u306bPRELUDE BF1\u7528 PROGRESSIVE SPRING\u3092\u767a\u58f2\u3044\u305f\u3057\u307e\u3059\u3002 SPOON SPORTS has newly released t […]<\/p>\n","protected":false},"author":1,"featured_media":7930,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-7894","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-new-item"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7894"}],"version-history":[{"count":25,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7894\/revisions"}],"predecessor-version":[{"id":7964,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7894\/revisions\/7964"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/7930"}],"wp:attachment":[{"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.spoonsports.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}