{"id":45,"date":"2026-06-21T15:50:19","date_gmt":"2026-06-21T15:50:19","guid":{"rendered":"https:\/\/informationnews.ink\/?p=45"},"modified":"2026-06-21T15:50:53","modified_gmt":"2026-06-21T15:50:53","slug":"kh-vidiq-badge-vidiq-badge-vidiq-badge-vidiq-badge-vidiq-badge-vidiq-badge-vidiq-badge-how-close-can-you-g","status":"publish","type":"post","link":"https:\/\/informationnews.ink\/?p=45","title":{"rendered":"How Close Can You Get to a Factory Yamaha YZ250 2-Stroke?"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"How Close Can You Get to a Factory Yamaha YZ250 2-Stroke?\" src=\"https:\/\/www.youtube.com\/embed\/fku1AwYYkCQ\" width=\"1047\" height=\"552\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><span class=\"ytAttributedStringHost ytAttributedStringWhiteSpacePreWrap\" dir=\"auto\"><span class=\"ytAttributedStringLinkInheritColor\" dir=\"auto\">This Week in MXA, presented by O&#8217;Neal, Josh Mosiman is breaking in our 70th anniversary white and red 2026 Yamaha YZ250 two-stroke. This engine was fully built by Pro Circuit, identical to Ken Roczen&#8217;s 2022 Red Bull Straight Rhythm-winning YZ250 and Ryan Villopoto&#8217;s Two-Stroke World Championship bike from 2024. Surprisingly, with Pro Circuit&#8217;s head and cylinder mods, the Wiseco piston, the Pro Circuit billet clutch cover, all the gaskets, and labor, the engine price comes out to only $1500. However, we forgot to factor in the MotoTassinari V-Force4X reed valve ($165), the Pro Circuit Champ Stamp pipe ($384.95), and the R-304 silencer ($206.29. Also, on a separate bill, the revalved KYB suspension from Pro Circuit goes for just under $900.\u00a0<\/span><\/span><\/p>\n<p data-path-to-node=\"0\">The <b data-path-to-node=\"0\" data-index-in-node=\"4\">Yamaha YZ250<\/b> is one of the most legendary, iconic, and enduring dirt bikes in motocross history. First introduced in 1974, it holds the record for the <b data-path-to-node=\"0\" data-index-in-node=\"155\">longest-running production motocross model<\/b> in the world. It is highly celebrated for its extreme reliability, competitive performance, and the raw, mechanical fun of a 250cc two-stroke engine.<\/p>\n<h2 data-path-to-node=\"2\">\ud83d\udee0\ufe0f Key Technical Specifications<\/h2>\n<div class=\"horizontal-scroll-wrapper\">\n<div class=\"table-block-component\">\n<div class=\"table-block has-export-button new-table-style is-at-scroll-start is-at-scroll-end\">\n<div class=\"table-content\" data-hveid=\"0\" data-ved=\"0CAAQ3ecQahcKEwjc4rfC1piVAxUAAAAAHQAAAAAQbA\">\n<table data-path-to-node=\"3\">\n<thead>\n<tr>\n<th><span data-path-to-node=\"3,0,0,0\">Feature<\/span><\/th>\n<th><span data-path-to-node=\"3,0,1,0\">Specification<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"3,1,0,0\"><b data-path-to-node=\"3,1,0,0\" data-index-in-node=\"0\">Engine Type<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,1,1,0\"><span class=\"math-inline\" data-math=\"249\\text{ cc}\" data-index-in-node=\"0\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">249<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0cc<\/span><\/span><\/span><\/span><\/span><\/span> liquid-cooled, reed-valve inducted, 2-stroke single<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,2,0,0\"><b data-path-to-node=\"3,2,0,0\" data-index-in-node=\"0\">Bore x Stroke<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,2,1,0\"><span class=\"math-inline\" data-math=\"66.4\\text{ mm} \\times 72.0\\text{ mm}\" data-index-in-node=\"0\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">66.4<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0mm<\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">72.0<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0mm<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,3,0,0\"><b data-path-to-node=\"3,3,0,0\" data-index-in-node=\"0\">Fuel System<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,3,1,0\">Keihin PWK38S carburetor with Throttle Position Sensor (TPS)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,4,0,0\"><b data-path-to-node=\"3,4,0,0\" data-index-in-node=\"0\">Transmission<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,4,1,0\">5-speed, multiplate wet clutch<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,5,0,0\"><b data-path-to-node=\"3,5,0,0\" data-index-in-node=\"0\">Front Suspension<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,5,1,0\">KYB Speed-Sensitive System (SSS) inverted fork; <span class=\"math-inline\" data-math=\"300\\text{ mm}\" data-index-in-node=\"48\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">300<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0mm<\/span><\/span><\/span><\/span><\/span><\/span> travel<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,6,0,0\"><b data-path-to-node=\"3,6,0,0\" data-index-in-node=\"0\">Rear Suspension<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,6,1,0\">KYB fully adjustable monoshock; <span class=\"math-inline\" data-math=\"315\\text{ mm}\" data-index-in-node=\"32\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">315<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0mm<\/span><\/span><\/span><\/span><\/span><\/span> travel<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,7,0,0\"><b data-path-to-node=\"3,7,0,0\" data-index-in-node=\"0\">Frame Type<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,7,1,0\">Lightweight aluminum semi-double-cradle<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"3,8,0,0\"><b data-path-to-node=\"3,8,0,0\" data-index-in-node=\"0\">Wet Weight<\/b><\/span><\/td>\n<td><span data-path-to-node=\"3,8,1,0\">~103 kg \/ 227 lbs (fully fueled and ready to ride)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"table-footer hide-on-print hide-from-message-actions\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 data-path-to-node=\"5\">\ud83d\ude80 Engine Character &amp; Performance<\/h2>\n<ul data-path-to-node=\"6\">\n<li>\n<p data-path-to-node=\"6,0,0\"><b data-path-to-node=\"6,0,0\" data-index-in-node=\"0\">The Two-Stroke Punch:<\/b> Producing roughly <b data-path-to-node=\"6,0,0\" data-index-in-node=\"40\">47 to 49 horsepower<\/b> in stock form, the YZ250 delivers instant, hard-hitting power. It utilizes Yamaha\u2019s patented <b data-path-to-node=\"6,0,0\" data-index-in-node=\"153\">Power Valve System (YPVS)<\/b> to broaden the powerband, combining crisp bottom-end torque with a ferocious mid-range pull and singing top-end over-rev.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"6,1,0\"><b data-path-to-node=\"6,1,0\" data-index-in-node=\"0\">Pure Simplicity:<\/b> Unlike modern four-stroke engines with complex overhead cams, valves, and electronic fuel injection systems, the YZ250 uses a beautifully simple carbureted design. This makes it incredibly affordable and easy to rebuild for backyard mechanics.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"8\">\ud83c\udfc1 Suspension &amp; Handling Gold Standard<\/h2>\n<ul data-path-to-node=\"9\">\n<li>\n<p data-path-to-node=\"9,0,0\"><b data-path-to-node=\"9,0,0\" data-index-in-node=\"0\">KYB SSS Suspension:<\/b> The YZ250&#8217;s absolute crown jewel is its <b data-path-to-node=\"9,0,0\" data-index-in-node=\"60\">KYB Speed-Sensitive System<\/b> coil-spring fork. Decades after its introduction, it still sets the industry benchmark for production off-road suspension, offering an incredibly plush feel that resists harsh bottoming on massive jumps.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,1,0\"><b data-path-to-node=\"9,1,0\" data-index-in-node=\"0\">Agile Aluminum Chassis:<\/b> With a nimble, rigid aluminum frame and low overall weight, the YZ250 handles with exceptional sharpness. It transitions rapidly through tight corners and is notoriously fun and predictable in the air.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"11\">\ud83c\udf0e The Enduro &amp; Freestyle Legend<\/h2>\n<p data-path-to-node=\"12\">Because of its incredibly versatile power delivery and indestructible build quality, the YZ250 isn&#8217;t just a motocross track weapon. It is highly sought after across multiple disciplines:<\/p>\n<ul data-path-to-node=\"13\">\n<li>\n<p data-path-to-node=\"13,0,0\"><b data-path-to-node=\"13,0,0\" data-index-in-node=\"0\">Off-Road\/Enduro:<\/b> Easily converted into a woods-racing machine (often modified with a heavier flywheel weight and an <span class=\"math-inline\" data-math=\"18\\text{-inch}\" data-index-in-node=\"116\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">18<\/span><span class=\"mord text\"><span class=\"mord\">-inch<\/span><\/span><\/span><\/span><\/span><\/span> rear wheel).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"13,1,0\"><b data-path-to-node=\"13,1,0\" data-index-in-node=\"0\">Freestyle Motocross (FMX):<\/b> For years, the YZ250 has been a premier weapon of choice for freestyle athletes globally due to its ultra-light chassis weight and crisp throttle response.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>This Week in MXA, presented by O&#8217;Neal, Josh Mosiman is breaking in our 70th anniversary white and red 2026 Yamaha YZ250 two-stroke. This engine was fully built by Pro Circuit, &hellip; <\/p>\n","protected":false},"author":1,"featured_media":46,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/posts\/45","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/informationnews.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=45"}],"version-history":[{"count":2,"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/posts\/45\/revisions"}],"predecessor-version":[{"id":48,"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/posts\/45\/revisions\/48"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/informationnews.ink\/index.php?rest_route=\/wp\/v2\/media\/46"}],"wp:attachment":[{"href":"https:\/\/informationnews.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/informationnews.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/informationnews.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}