{"id":28064,"date":"2026-03-11T14:46:57","date_gmt":"2026-03-11T14:46:57","guid":{"rendered":"https:\/\/staging.mx-springs.com\/producten\/fork-spring-mx-43-85-455\/"},"modified":"2026-03-20T08:33:09","modified_gmt":"2026-03-20T08:33:09","slug":"fork-spring-mx-43-85-455","status":"publish","type":"product","link":"https:\/\/mx-springs.com\/en\/product\/fork-spring-mx-43-85-455\/","title":{"rendered":"Fork spring MX 43.85-455"},"content":{"rendered":"
\n
\n
Suitable for<\/div>\n
\n
\n
Beta<\/div>\n
\n RR 125 2T RACING (2020\u20132022)
RR 200 2T RACING (2020\u20132022)
RR 250 2T RACING (2020\u20132022)
RR 300 2T RACING (2020\u20132022)
RR 350 4T RACING (2020\u20132022)
RR 390 4T RACING (2020\u20132022)
RR 430 4T RACING (2020\u20132022)
RR 480 4T RACING (2020\u20132022)\n <\/div>\n<\/div>\n
\n
KTM<\/div>\n
\n EXC 300 (2026)
EXC-F 350 (2026)
EXC-F 450 (2026)
EXC-F 500 (2026)
EXC 300 SIX DAYS (2026)
EXC-F 350 SIX DAYS (2026)
EXC-F 450 SIX DAYS (2026)
EXC-F 500 SIX DAYS (2026)\n <\/div>\n<\/div>\n
\n
Fantic<\/div>\n
\n XE 125 (2020\u20132022)
XX 125 (2020\u20132021)
XX 250 (2020\u20132021)\n <\/div>\n<\/div>\n
\n
Yamaha<\/div>\n
\n WR 450F (2012\u20132015)
YZ 125 (2006\u20132021)
YZ 250 (2006\u20132021)
YZF 250 (2006\u20132013)
YZF 450 (2006\u20132009)\n <\/div>\n<\/div><\/div>\n<\/p><\/div>\n
\n
Specifications<\/div>\n
\n
\n
Diameter<\/div>\n
43.85 mm<\/div>\n<\/div>\n
\n
Length<\/div>\n
455 mm<\/div>\n<\/div>\n
\n
Spring rates<\/div>\n
\n 3.6 N\/mm \u00b7 3.8 N\/mm \u00b7 4.0 N\/mm \u00b7 4.2 N\/mm \u00b7 4.4 N\/mm \u00b7 4.6 N\/mm \u00b7 4.8 N\/mm \u00b7 5.0 N\/mm \u00b7 5.2 N\/mm \u00b7 5,4 N\/mm<\/p>\n
\n The correct spring rate depends on rider weight, riding style and intended use. If in doubt, contact MX-Springs for advice.\n <\/div>\n<\/p><\/div>\n<\/div><\/div>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Fork spring suitable for various Beta, KTM, Fantic and Yamaha models within the specified model years. View full specifications<\/a>.<\/p>\n","protected":false},"featured_media":21953,"template":"","meta":[],"product_brand":[],"product_cat":[32515,32749,33871,32755,43500,32797,34153,32803,43595,32815,34267,32821,43665,32827,34357,32833,43720,32521,32557,37843,39643,39649,39655,37855,39685,39691,39697,37867,39727,39733,39739,37879,39769,39775,39781,37891,39811,39817,39823,37903,39853,39859,39865,37927,39907,39913,39919,37945,39949,39955,39961,38917,39013,39019,39025,39031,41281,41323,41329,41335,41299,41341,41347,41305,41383,41389,32599,38923,40141,40147,40153,40159,40165,40171,40177,40183,40189,40195,40201,40207,40213,40219,40225,40231,38929,40273,40279,40285,40291,40297,40303,40309,40315,40321,40327,40333,40339,40345,40351,40357,40363,38947,39115,39121,39127,39133,39139,39145,39151,39157,38953,39253,39259,39265,39271],"product_tag":[],"class_list":{"0":"post-28064","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-beta-en","7":"product_cat-ktm-exc-300-en","8":"product_cat-ktm-exc-300-2026-en","9":"product_cat-ktm-exc-300-six-days-en","10":"product_cat-exc-300-six-days-2026-en","11":"product_cat-ktm-exc-f-350-en","12":"product_cat-ktm-exc-f-350-2026-en","13":"product_cat-ktm-exc-f-350-six-days-en","14":"product_cat-exc-f-350-six-days-2026-en","15":"product_cat-ktm-exc-f-450-en","16":"product_cat-ktm-exc-f-450-2026-en","17":"product_cat-ktm-exc-f-450-six-days-en","18":"product_cat-exc-f-450-six-days-2026-en","19":"product_cat-ktm-exc-f-500-en","20":"product_cat-ktm-exc-f-500-2026-en","21":"product_cat-ktm-exc-f-500-six-days-en","22":"product_cat-exc-f-500-six-days-2026-en","23":"product_cat-fantic-en","24":"product_cat-ktm-en","25":"product_cat-beta-rr-125-2t-racing-en","26":"product_cat-beta-rr-125-2t-racing-2020-en","27":"product_cat-beta-rr-125-2t-racing-2021-en","28":"product_cat-beta-rr-125-2t-racing-2022-en","29":"product_cat-beta-rr-200-2t-racing-en","30":"product_cat-beta-rr-200-2t-racing-2020-en","31":"product_cat-beta-rr-200-2t-racing-2021-en","32":"product_cat-beta-rr-200-2t-racing-2022-en","33":"product_cat-beta-rr-250-2t-racing-en","34":"product_cat-beta-rr-250-2t-racing-2020-en","35":"product_cat-beta-rr-250-2t-racing-2021-en","36":"product_cat-beta-rr-250-2t-racing-2022-en","37":"product_cat-beta-rr-300-2t-racing-en","38":"product_cat-beta-rr-300-2t-racing-2020-en","39":"product_cat-beta-rr-300-2t-racing-2021-en","40":"product_cat-beta-rr-300-2t-racing-2022-en","41":"product_cat-beta-rr-350-4t-racing-en","42":"product_cat-beta-rr-350-4t-racing-2020-en","43":"product_cat-beta-rr-350-4t-racing-2021-en","44":"product_cat-beta-rr-350-4t-racing-2022-en","45":"product_cat-beta-rr-390-4t-racing-en","46":"product_cat-beta-rr-390-4t-racing-2020-en","47":"product_cat-beta-rr-390-4t-racing-2021-en","48":"product_cat-beta-rr-390-4t-racing-2022-en","49":"product_cat-beta-rr-430-4t-racing-en","50":"product_cat-beta-rr-430-4t-racing-2020-en","51":"product_cat-beta-rr-430-4t-racing-2021-en","52":"product_cat-beta-rr-430-4t-racing-2022-en","53":"product_cat-beta-rr-480-4t-racing-en","54":"product_cat-beta-rr-480-4t-racing-2020-en","55":"product_cat-beta-rr-480-4t-racing-2021-en","56":"product_cat-beta-rr-480-4t-racing-2022-en","57":"product_cat-yamaha-wr-450f-en","58":"product_cat-yamaha-wr-450f-2012-en","59":"product_cat-yamaha-wr-450f-2013-en","60":"product_cat-yamaha-wr-450f-2014-en","61":"product_cat-yamaha-wr-450f-2015-en","62":"product_cat-fantic-xe-125-en","63":"product_cat-fantic-xe-125-2020-en","64":"product_cat-fantic-xe-125-2021-en","65":"product_cat-fantic-xe-125-2022-en","66":"product_cat-fantic-xx-125-en","67":"product_cat-fantic-xx-125-2020-en","68":"product_cat-fantic-xx-125-2021-en","69":"product_cat-fantic-xx-250-en","70":"product_cat-fantic-xx-250-2020-en","71":"product_cat-fantic-xx-250-2021-en","72":"product_cat-yamaha-en","73":"product_cat-yamaha-yz-125-en","74":"product_cat-yamaha-yz-125-2006-en","75":"product_cat-yamaha-yz-125-2007-en","76":"product_cat-yamaha-yz-125-2008-en","77":"product_cat-yamaha-yz-125-2009-en","78":"product_cat-yamaha-yz-125-2010-en","79":"product_cat-yamaha-yz-125-2011-en","80":"product_cat-yamaha-yz-125-2012-en","81":"product_cat-yamaha-yz-125-2013-en","82":"product_cat-yamaha-yz-125-2014-en","83":"product_cat-yamaha-yz-125-2015-en","84":"product_cat-yamaha-yz-125-2016-en","85":"product_cat-yamaha-yz-125-2017-en","86":"product_cat-yamaha-yz-125-2018-en","87":"product_cat-yamaha-yz-125-2019-en","88":"product_cat-yamaha-yz-125-2020-en","89":"product_cat-yamaha-yz-125-2021-en","90":"product_cat-yamaha-yz-250-en","91":"product_cat-yamaha-yz-250-2006-en","92":"product_cat-yamaha-yz-250-2007-en","93":"product_cat-yamaha-yz-250-2008-en","94":"product_cat-yamaha-yz-250-2009-en","95":"product_cat-yamaha-yz-250-2010-en","96":"product_cat-yamaha-yz-250-2011-en","97":"product_cat-yamaha-yz-250-2012-en","98":"product_cat-yamaha-yz-250-2013-en","99":"product_cat-yamaha-yz-250-2014-en","100":"product_cat-yamaha-yz-250-2015-en","101":"product_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