{"product_id":"309-machine-hp400c-cnc-ported-cylinder-kit","title":"309 Machine HP400C CNC Ported Cylinder Kit","description":"\u003cp data-start=\"0\" data-end=\"168\"\u003eWake up your saw with precision CNC porting from 309 Machine. Our focus is simple: maximize power while maintaining the reliability and durability professionals expect.\u003c\/p\u003e\n\u003cp data-start=\"170\" data-end=\"377\"\u003eThe HP400 Cylinder Kit represents the ideal balance of high performance and longevity, delivering increased torque and horsepower along with improved throttle response and cutting performance.\u003c\/p\u003e\n\u003cp data-start=\"379\" data-end=\"394\"\u003eWhat’s Included\u003c\/p\u003e\n\u003cp data-start=\"396\" data-end=\"683\"\u003e• Brand new OEM Stihl Cylinder Kit\u003cbr\u003e     • Stihl Part Number 1140-020-1212\u003cbr\u003e     • OEM cylinder\u003cbr\u003e     • OEM piston\u003cbr\u003e     • Piston rings\u003cbr\u003e     • Piston Wrist Pin\u003cbr\u003e     • Circlips\u003cbr\u003e• 309 Machine Decomp Plug\u003c\/p\u003e\n\u003cp data-start=\"685\" data-end=\"828\"\u003eBase gasket must be reused or replaced. Gaskets are sold separately. We recommend using a piston ring clamp set when installing a new cylinder.\u003c\/p\u003e\n\u003cp data-start=\"830\" data-end=\"855\"\u003ePerformance Work Includes\u003c\/p\u003e\n\u003cp data-start=\"857\" data-end=\"1096\"\u003e• CNC cylinder porting\u003cbr\u003e• Exhaust port enlargement, timing, and polishing\u003cbr\u003e• Squish band machining for improved combustion efficiency\u003cbr\u003e• Base cut for increased compression\u003cbr\u003e• Transfer port adjustments and flow optimization\u003cbr\u003e• Intake port timing\u003c\/p\u003e\n\u003cp data-start=\"1098\" data-end=\"1247\"\u003ePerfect for refreshing a tired saw or for those who want ported performance without long lead times. These units are in stock and ready to ship.\u003c\/p\u003e\n\u003cp data-start=\"1249\" data-end=\"1366\"\u003eFor maximum performance, we recommend pairing this cylinder with a performance exhaust and high flow air filter.\u003c\/p\u003e\n\u003cp data-start=\"1368\" data-end=\"1375\"\u003eFitment\u003c\/p\u003e\n\u003cp data-start=\"1377\" data-end=\"1397\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Stihl MS 400 \u003c\/p\u003e","brand":"309 Machine","offers":[{"title":"Default Title","offer_id":52178558779703,"sku":null,"price":760.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/4570\/2199\/files\/IMG_8778.jpg?v=1779380083","url":"https:\/\/undauntedmfg.com\/products\/309-machine-hp400c-cnc-ported-cylinder-kit","provider":"Undaunted Manufacturing","version":"1.0","type":"link"}