Chung Yang

Race ported top end set for Chung Yang F270.The SPEED TEC CRANK genuine Zenoah G290 race ported top end set is optimized for performance with sophisticated craftsmanship and when accurately installed - guarantees, besides greatly increased performance, excellent workmanship and stamina. SPEED TEC CRANK version modifications: Cylinder: Adjustment of compressionEnlarged portsFuel management milledMachined and polished exhaust and intakeThe case is specially matched with enlarged and polished cross section towards the ports Piston: Weight reducedSkirt shortenedPiston above and below piston ring tapered and piston dome polished The set includes the following items: Performance-optimized cylinder and piston, piston ring, piston pin, piston pin circlips and cylinder gasket.To achieve the optimum performance gain of a SPEED TEC CRANK top end set, we recommend the use of a tuned pipe ().Contents:1 set

Race ported top end set for the original Chung Yang 26 cm³ engine.The SPEED TEC EXPERT genuine Zenoah G260 race ported top end set is optimized for performance with sophisticated craftsmanship and when accurately installed - guarantees, besides greatly increased performance, excellent workmanship and stamina. SPEED TEC EXPERT version modifications: Cylinder: Adjustment of compressionEnlarged portsFuel management milledModified exhaust and intake Piston: Weight reducedSkirt shortenedOil ringsPiston above and below piston ring tapered and piston dome ground The set includes the following items: Performance-optimized cylinder and piston, piston ring, piston pin, piston pin circlips and cylinder gasket.To achieve the optimum performance gain of a SPEED TEC EXPERT top end set, we recommend the use of a tuned pipe ( to the tuned pipes ).Please note:It is recommended to use a gasket sealer with every gasket on an engine. This gives better sealing anda longer lasting gasket. We also recommend:y0804 HT-flange sealer 518 19015 Bindulin Siliconey0994 Marston sealery0807 MD-Sil RTV silicone sealer