{"id":114976,"date":"2026-06-06T06:18:56","date_gmt":"2026-06-06T04:18:56","guid":{"rendered":"https:\/\/stage6-racing.com\/produkt\/crankshaft-stage6-r-t-47mm-stroke-105mm-conrod-derbi\/"},"modified":"2026-06-15T06:20:06","modified_gmt":"2026-06-15T04:20:06","slug":"crankshaft-stage6-r-t-47mm-stroke-105mm-conrod-derbi","status":"publish","type":"product","link":"https:\/\/stage6-racing.com\/en\/product\/crankshaft-stage6-r-t-47mm-stroke-105mm-conrod-derbi\/","title":{"rendered":"Crankshaft Stage6 R\/T 47mm stroke \/ 105mm conrod Derbi"},"content":{"rendered":"<h2>Stage6 R\/T high-end racing crankshaft 47mm stroke \/ 105mm conrod Derbi<\/h2>\n<p>Stage6 presents this high-end crankshaft for Derbi with 105mm connecting rod and 47mm stroke for 50cc motorcycles with Derbi Euro 3 \/ Euro 4 engine. It has been specifically developed for the Stage6 R\/T 100 FL cylinder kit and meets the requirements of modern 100cc FL racing engines. This architecture ensures optimized engine geometry, precise alignment and efficient power transmission.<\/p>\n<h3>Features Stage6 R\/T crankshaft Derbi<\/h3>\n<ul>\n<li><strong>Hot-forged 18NiCrMo5 steel (HRC):<\/strong> Maximum reliability and strength.<\/li>\n<li><strong>CNC-machined connecting rod with double heat treatment:<\/strong> High durability under heavy load.<\/li>\n<li><strong>Precision grinding and polishing:<\/strong> Excellent surface finish and improved lubrication.<\/li>\n<li><strong>Optimized balancing with high-density tungsten inserts (17.6 g\/cm\u00b3) and ultra-light connecting rod (<80 g):<\/strong> Minimizes vibrations and ensures smooth operation even at very high RPM.<\/li>\n<li><strong>Cold-rolled threads:<\/strong> Increased durability.<\/li>\n<li><strong>Silver-plated needle bearing:<\/strong> Reliable operation at very high engine speeds.<\/li>\n<\/ul>\n<h3>Compatibility and installation tips Stage6 crankshaft<\/h3>\n<p>The racing crankshaft is a perfect match for the <a href=\"\/en\/product\/cylinder-kit-100cc-stage6-r-t-derbi-283162\">Derbi Stage6 R\/T 100 cylinder<\/a>, but is also an excellent choice for all similar <a href=\"\/en\/product\/cylinder-kit-100cc-stage6-r-t-derbi-283162\">high-end cylinders<\/a> with 47mm stroke \/ 105 mm connecting rod.<\/p>\n<p><strong>Important note<\/strong>: Before installation, the crankshaft must be thoroughly cleaned with fuel to remove the protective oil. <strong>Machining of the crankcase to 81.5 mm is required<\/strong>, and connecting rod clearance must be checked. The use of a new <a href=\"\/en\/product\/crankshaft-bearing-set-stage6-r-t-c3-polymer-cage-derbi-245533\">Derbi Stage6 R\/T crankshaft bearing kit<\/a> is also recommended.<\/p>\n<h4>Stage6 R\/T racing crankshaft Derbi:<\/h4>\n<ul>\n<li>Tuning level: High-end<\/li>\n<li>Stroke: 47 mm<\/li>\n<li>Connecting rod: 105 mm<\/li>\n<li>Crank pin: 20 x 41 mm<\/li>\n<li>Crank web diameter: 80 mm (crankcase machining to 81.5 mm required)<\/li>\n<li>Material: 18NiCrMo5 steel<\/li>\n<li>Weight: 1,96 kg<\/li>\n<li>Piston pin: 12 mm or 14 mm (depending on bearing)<\/li>\n<li>Included: 1x small end bearing (12x17x15 mm), 2x crankshaft nut (M12x1.25)<\/li>\n<li>Compatible with: 50cc motorcycles with Derbi engine from 2006 (Euro 3 and Euro 4)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Stage6 R\/T high-end racing crankshaft 47mm stroke \/ 105mm conrod Derbi Stage6 presents this high-end crankshaft for Derbi with 105mm connecting rod and 47mm stroke for 50cc motorcycles with Derbi Euro 3 \/ Euro 4 engine. It has been specifically developed for the Stage6 R\/T 100 FL cylinder kit and meets the requirements of modern&hellip;<\/p>\n","protected":false},"featured_media":114956,"template":"","meta":[],"product_brand":[],"product_cat":[8266],"product_tag":[8262],"class_list":["post-114976","product","type-product","status-publish","has-post-thumbnail","product_cat-bottom-end","product_tag-50cc-bike-motorcycle","pa_ausfuehrung-crankshaft","pa_farbe-variante-r-t","pa_marke-14x17x166mm","pa_produkt-familie-stage6-r-t-en","pa_produkt-familie-stage6-r-t","pa_strassenzulassung-12-mm-14-mm","pa_tuningbereich-high-end","description-off","first","instock","product-type-external"],"_links":{"self":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product\/114976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/media\/114956"}],"wp:attachment":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/media?parent=114976"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_brand?post=114976"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_cat?post=114976"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_tag?post=114976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}