{"id":69348,"date":"2026-06-06T05:33:27","date_gmt":"2026-06-06T03:33:27","guid":{"rendered":"https:\/\/stage6-racing.com\/produkt\/cylinder-stage6-70cc-racing-mk2-12mm-piston-pin-china-2-stroke-ac-cpi-keeway\/"},"modified":"2026-06-07T06:19:02","modified_gmt":"2026-06-07T04:19:02","slug":"cylinder-kit-stage6-70cc-racing-mk2-12mm-china-2t-ac-cpi","status":"publish","type":"product","link":"https:\/\/stage6-racing.com\/en\/product\/cylinder-kit-stage6-70cc-racing-mk2-12mm-china-2t-ac-cpi\/","title":{"rendered":"Cylinder Kit Stage6 70cc Racing MK2 12mm China 2T AC \/ CPI"},"content":{"rendered":"<h2>Cylinder kit Stage6 Racing MK2 70cc<\/h2>\n<p><strong>Cylinder Stage6 Racing 70cc MK2, 12mm piston pin, China 2-stroke AC<\/strong>. The successor to the successful Stage6 Racing 70cc cylinder is called Stage6 Racing MKII 70cc and comes in a completely revised version with more power out of the box.<\/p>\n<h3>Improvements and technical details Stage6 Racing aluminium cylinder<\/h3>\n<p>The <strong>aluminum cylinder<\/strong> with high-strength hard chrome coating has been completely redesigned:<\/p>\n<ul>\n<li><strong>Transfer port design<\/strong>: instead of 5, now 6 transfer ports, which significantly improve cylinder filling.<\/li>\n<li><strong>Piston design<\/strong>: New domed piston crown and 0.8 mm ring, inspired by the R\/T piston, for more power and better thermal resilience.<\/li>\n<li><strong>Optimized cooling<\/strong>: Generous scavenging of the split exhaust, 5-cornered design with internal cooling fins, one-piece cylinder head with cooling channels.<\/li>\n<li><strong>Port timings<\/strong>: 190\u00b0-130\u00b0.<\/li>\n<\/ul>\n<p>The cylinder delivers <strong>2-3 hp more<\/strong> than the MK1 and achieves <strong>17-19 hp<\/strong> in the standard configuration. With appropriate reworking, <strong> over 20 hp<\/strong> is possible, making it one of the most powerful <strong>70cc kits<\/strong> on the market.<\/p>\n<p>To exploit the full potential of this cylinder, we recommend the use of a reinforced crankshaft, a minimum 21 mm carburetor and a racing exhaust system.<\/p>\n<h4>Scope of delivery Stage6 Racing cylinder kit<\/h4>\n<ul>\n<li>Aluminum cylinder 47.6mm diameter<\/li>\n<li>1-ring piston with 12mm piston pin<\/li>\n<li>One-piece cylinder head<\/li>\n<li>Gasket set<\/li>\n<\/ul>\n<h3>Notes on installation and maintenance<\/h3>\n<p>Before installation, the engine and components should be cleaned and the condition checked. Use a new spark plug and a new piston pin bearing.<br \/>Adjust the carburetor settings to prevent tightening. During the running-in phase of <strong>300 km<\/strong>, we recommend a mixture of <strong>1:33<\/strong> to ensure robustness and longevity.<\/p>\n<p><em>Caution:<\/em><\/p>\n<p>&#8211; Original exhausts cannot be fitted to this cylinder.<br \/>&#8211; The temperature sensor including the thread must not be longer than 18 mm, otherwise it may bump into the cylinder head.<\/p>\n<p>WITHOUT ROAD APPROVAL<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cylinder kit Stage6 Racing MK2 70cc Cylinder Stage6 Racing 70cc MK2, 12mm piston pin, China 2-stroke AC. The successor to the successful Stage6 Racing 70cc cylinder is called Stage6 Racing MKII 70cc and comes in a completely revised version with more power out of the box. Improvements and technical details Stage6 Racing aluminium cylinder The&hellip;<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"product_brand":[],"product_cat":[8272],"product_tag":[8259],"class_list":["post-69348","product","type-product","status-publish","product_cat-cylinder","product_tag-scooter-motorcycle","pa_ausfuehrung-cylinder-kit","pa_farbe-variante-racing","pa_marke-12-mm","pa_produkt-familie-stage6","pa_strassenzulassung-70cc","pa_tuningbereich-racing","description-off","first","instock","product-type-external"],"_links":{"self":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product\/69348","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:attachment":[{"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/media?parent=69348"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_brand?post=69348"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_cat?post=69348"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/stage6-racing.com\/en\/wp-json\/wp\/v2\/product_tag?post=69348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}