{"title":"Cylinders\/Gaskets Scootterre","description":"","products":[{"product_id":"cylinder-kit-malossi-sport-88cc-gy6-50cc-139qmb-qma","title":"Cylinder Kit Aluminium Malossi Sport 88cc GY6 50cc 139QMB\/QMA","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCylindre\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMatière: alliage primaire d'aluminium à teneur élevée en silicium trempé et revenu, chemise du cylindre avec application de carbures de silicium dans une matrice en nickel galvanique et lissage croisé par deux passages de diamants, avec des tolérances très strictes. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eUsinage: par machines-outils à C.N. à haute précision. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAccouplements cylindre-piston avec tolérance d'accouplement de 0,05 mm. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSurfaces d'échanges thermiques recalculées et agrandies. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePiston\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eExtra compact à trois segments. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMatière: alliage spécial d'aluminium à teneur élevée en silicium à basse dilatation thermique avec application d’étain sur les parois de coulissement. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eUsinage par machines-outils à C.N. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAllégés et renforcés. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSurfaces d'échanges thermiques agrandies. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSegments\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCompression - spéciaux à coulissement élevé et résistance mécanique très élevée, en fonte sphéroïdale S10 chromés. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1er segment racleur - en fonte sphéroïdale S10 chromé. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e2ème segment racleur - en trois pièces en acier spécial, chromé. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCylinder\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: primary aluminum alloy with high silicon content quenched and tempered, cylinder liner with application of silicon carbides in a galvanic nickel matrix and crossed smoothing by two diamond passes, with very strict tolerances. \u003c\/li\u003e\n\u003cli\u003eMachining: by high-precision CNC machine tools. \u003c\/li\u003e\n\u003cli\u003eCylinder-piston couplings with 0.05mm mating tolerance. \u003c\/li\u003e\n\u003cli\u003eRecalculated and enlarged heat exchange surfaces. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePiston\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtra compact with three segments. \u003c\/li\u003e\n\u003cli\u003eMaterial: special aluminum alloy with high silicon content and low thermal expansion with tin application on the sliding walls. \u003c\/li\u003e\n\u003cli\u003eMachining by CNC machine tools. \u003c\/li\u003e\n\u003cli\u003eLightened and reinforced. \u003c\/li\u003e\n\u003cli\u003eEnlarged heat exchange surfaces. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSegments\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompression - special with high sliding and very high mechanical resistance, in chrome-plated S10 spheroidal cast iron. \u003c\/li\u003e\n\u003cli\u003e1st oil ring - in chrome-plated S10 spheroidal cast iron. \u003c\/li\u003e\n\u003cli\u003e2nd oil ring - in three pieces of special steel, chrome-plated.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Malossi","offers":[{"title":"Default Title","offer_id":42581775253683,"sku":"3113243","price":359.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/Captured_ecran2023-06-29144524_3113243.png?v=1770242387"},{"product_id":"replacement-cylinder-kit-50cc-gy6-50cc-139qmb-qma","title":"Replacement Cylinder Kit 50cc GY6 50cc 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eKit cylindre 50cc pour tous les scooters chinois 4 temps 50cc utilisant les moteurs GY6 139QMB \/ QMA. Un kit de remplacement idéal à faible coût pour les extrémités supérieures usées ou endommagées. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e50cc cylinder kit for all 50cc 4 stroke Chinese scooters using the GY6 139QMB \/ QMA engines. An ideal low cost replacement kit for worn or damaged top ends. \u003c\/span\u003e\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42582967156915,"sku":"BT27364","price":61.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/Replacement_Cylinder_Kit_50cc_GY6_50cc_139QMB_QMA.jpg?v=1770242386"},{"product_id":"timing-chain-guide-gy6-50cc-139qmb-qma","title":"Timing Chain Guide GY6 50cc 139QMB\/QMA","description":"\u003cspan data-mce-fragment=\"1\"\u003eGuide tendeur de chaine de distribution pour moteurs GY6 50cc 139QMB\/QMA.\u003c\/span\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42583141744819,"sku":"BT13875","price":7.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/bt13875.jpg?v=1770242384"},{"product_id":"timming-chain-distributor-gy6-50cc-139qmb-qma","title":"Timing Chain Distributor GY6 50cc 139QMB\/QMA","description":"\u003cspan data-mce-fragment=\"1\"\u003eGuide chaîne de distribution pour moteurs GY6 50cc 139QMB\/QMA. \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eCe guide se trouve à l'opposé du tendeur de chaîne et est positionné entre le cylindre et la culasse. \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eLe caoutchouc poreux ou déchiré doit être remplacé immédiatement pour éviter d'endommager le moteur.\u003c\/span\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42583148462259,"sku":"BT13874","price":8.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/bt13874_schiene_steuerkette_fuehrung_web.jpg?v=1774545335"},{"product_id":"timming-chain-gy6-50cc-139qmb-qma","title":"Timing Chain GY6 50cc 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eChaîne de distribution pour les moteurs GY6 50ccm 139QMB\/QMA.\u003c\/span\u003e\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42583164846259,"sku":"BT40009","price":13.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/bt4009_steuerkette_web.jpg?v=1770242383"},{"product_id":"gasket-kit-malossi-88cc-gy6-50-139qmb-qma","title":"Gasket Kit Malossi 88cc GY6 50 (139QMB\/QMA)","description":"\u003cp\u003eJoint d'étanchéité pour kit cylindre Malossi 88cc 139QMB\/QMA. Peut convenir à plusieurs modèles 4T du genre Kymco Agility 4T, Sym Simply 4T \u0026amp; plus. \u003cbr\u003e\u003cbr\u003eCylindre:\u003cstrong\u003e \u003c\/strong\u003e3113243, \u003cbr\u003ePiston: 3413245 \/ 3413245.A0 \/ 3413245.B0 \/ 3413245.C0 \/ 3413245.D0, \u003cbr\u003eRing: 3513253. \u003c\/p\u003e\n\u003cp\u003eSeal for Malossi 88cc 139QMB\/QMA cylinder kit. May be suitable for several 4T models such as Kymco Agility 4T, Sym Simply 4T \u0026amp; more. \u003c\/p\u003e\n\u003cp\u003eCylinder: 3113243, \u003cbr\u003ePiston: 3413245 \/ 3413245.A0 \/ 3413245.B0 \/ 3413245.C0 \/ 3413245.D0, \u003cbr\u003eRing: 3513253. \u003c\/p\u003e","brand":"Malossi","offers":[{"title":"Default Title","offer_id":42629609619635,"sku":"1113391B","price":22.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/1113391b_store_Gasket_Kit_Malossi_88cc_GY6_50_139QMB_QMA_-_Pochette_de_joints_Malossi_88cc_GY6_50_139QMB_QMA_-_1113391Bv.jpg?v=1770242374"},{"product_id":"valve-seal-naraku-gy6-50-139qmb-qma","title":"Valve Seal Naraku GY6 50 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eJoint de tige de soupape en qualité de pièce d'origine des constructeurs automobiles taïwanais et japonais. \u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNaraku fournit un jeu de bagues racleuses d'huile en deux pièces pour les soupapes des culasses de cylindres à 4 temps. \u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eL'augmentation de la consommation d'huile est souvent due au vieillissement des joints de tige de soupape. Une trop grande quantité d'huile moteur pénètre dans la chambre de combustion par les soupapes et est à l'origine de dépôts nocifs de carbone dans l'huile et de défauts au niveau de la culasse. Ces joints doivent être remplacés chaque fois que la culasse est démontée. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eValve stem seal in original part quality from Taiwanese and Japanese car manufacturers. \u003c\/p\u003e\n\u003cp\u003eNaraku supplies a two-piece oil scraper ring set for the valves of 4-stroke cylinder heads. \u003c\/p\u003e\n\u003cp\u003eIncreased oil consumption is often caused by aging of the valve stem seals. Too much engine oil enters the combustion chamber through the valves and causes harmful carbon deposits in the oil and cylinder head defects. These seals must be replaced every time the cylinder head is disassembled. \u003c\/p\u003e","brand":"Naraku","offers":[{"title":"Default Title","offer_id":42633756803251,"sku":"NK101.45","price":5.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/Valve_Seal_Naraku_GY6_50_139QMB_QMA.jpg?v=1770242369"},{"product_id":"spark-plug-iridium-cr7hix","title":"Spark Plug Iridium CR7HIX","description":"\u003cspan data-mce-fragment=\"1\"\u003eLes bougies de la série NGK IX Iridium ont été conçues spécifiquement pour les passionnés de performance. \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eL'électrode centrale à fil fin assure une grande durabilité et une étincelle toujours stable. \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eL'alliage Iridium a un point de fusion extrêmement élevé, parfait pour les moteurs haute technologie et hautes performances d'aujourd'hui.\u003c\/span\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":42634753507507,"sku":"CR7HIX","price":18.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/24b38da27974ff72da424d9575274fca.jpg?v=1770242366"},{"product_id":"spark-plug-cr7hsa","title":"Spark Plug CR7HSA","description":"\u003cspan data-mce-fragment=\"1\"\u003eBougie de rechange NGK CR7HSA.\u003c\/span\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":42634800300211,"sku":"CR7HSA","price":6.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/bougie-ngk-cr7hsa-standard.jpg?v=1770242366"},{"product_id":"cylinder-kit-aluminium-polini-80cc-gy6-50cc-139qmb-qma","title":"Cylinder Kit Aluminium Polini 80cc GY6 50cc 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003ePour augmenter la puissance de votre 50cc 4 temps, Polini vous propose cet ensemble cylindre piston Polini 80cc Alu 4Temps AC à un prix plutôt avantageux ! D'une excellente qualité de fabrication (“made in Italy”), ce kit cylindre piston Polini 80cc 4Temps AC offre de très bonnes prestations en terme d'augmentation du couple du moteur. Grâce à sa cylindrée plus importante (diamètre 50mm), ce cylindre piston Polini 80cc Alu 4Temps AC vous procurera de meilleurs accélérations ainsi qu'une vitesse de pointe légèrement supérieure. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eTo increase the power of your 50cc 4-stroke, Polini offers you this Polini 80cc Alu 4-stroke AC cylinder piston assembly at a rather advantageous price! Of excellent manufacturing quality (“made in Italy”), this Polini 80cc 4-stroke AC cylinder piston kit offers very good performance in terms of increasing engine torque. Thanks to its larger displacement (diameter 50mm), this Polini 80cc Alu 4-Stroke AC piston cylinder will give you better acceleration as well as a slightly higher top speed.\u003c\/span\u003e\u003c\/p\u003e","brand":"Polini","offers":[{"title":"Default Title","offer_id":42635176902835,"sku":"125.0007","price":379.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/124663_1536821.jpg?v=1770242490"},{"product_id":"o-ring-for-drain-plug-gy6-50-139qmb-qma","title":"O-Ring for Drain Plug GY6 50 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eJoint torique pour filtre à huile à vis - 139QMB\/QMA 30x36x3mm. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eO-ring for screw-in oil filter - 139QMB\/QMA 30x36x3mm.\u003c\/span\u003e\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42684753215667,"sku":"BT14736","price":2.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/O-Ring_for_Drain_Plug_GY6_50_139QMB_QMA.jpg?v=1770242350"},{"product_id":"oil-filter-screen-gy6-50-139qmb-qma","title":"Oil Filter Screen GY6 50-150cc","description":"\u003cdiv class=\"container-indent\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"container container-fluid-mobile\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"row\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"col-6\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tt-product-single-info stickprcolheight-js\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tt-collapse-block prpage-tabs\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tt-item active\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tt-collapse-content\" data-mce-fragment=\"1\"\u003eFiltre à huile \u003cspan data-mce-fragment=\"1\"\u003e4 temps GY6 50-150cc. \u003c\/span\u003eNous recommandons de le changer lors de votre changement d'huile. \u003c\/div\u003e\n\u003cdiv class=\"tt-collapse-content\" data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"tt-collapse-content\" data-mce-fragment=\"1\"\u003eGY6 50-150cc 4-stroke oil filter. We recommend changing it when you change your oil.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42684777824435,"sku":"BT13857","price":2.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/Oil_Filter_Screen_GY6_50_139QMB_QMA.jpg?v=1770242349"},{"product_id":"drain-plug-gy6-50-139qmb-qma","title":"Drain Plug GY6 50-150CC 139QMB\/QMA","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eBouchon de filtre à huile pour GY6 50ccm 139QMB\/QMA et 125ccm, 150ccm 152\/157QMI moteurs 4 temps.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNous recommandons de renouveler également le joint d'étanchéité approprié BT14736.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOil filter cap for GY6 50ccm 139QMB\/QMA and 125ccm, 150ccm 152\/157QMI 4-stroke engines.\u003cbr\u003e\u003cbr\u003eWe recommend also renewing the appropriate seal BT14736.\u003c\/span\u003e\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":42684779561139,"sku":"BT80011","price":6.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/BT80011_2D_0002.jpg?v=1770242349"},{"product_id":"rocker-arms-64mm-139qmb-qma","title":"Rocker Arms 64mm (139QMB\/QMA)","description":"\u003cp\u003e\u003cspan\u003eLevier de soupape pour moteur GY6 50cc 139QMB\/QMA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRocker Arms for GY6 50cc 139QMB\/QMA engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Secretimport.tv","offers":[{"title":"Default Title","offer_id":43910576472243,"sku":"Si-0406","price":19.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/Rocker_Arms_64mm_139QMB_QMA.jpg?v=1770242737"},{"product_id":"camshaft-ncy-performance-for-139qmb-qma","title":"Camshaft NCY Performance for GY6 139QMB\/QMA","description":"\u003cp\u003e\u003cspan\u003eCame haute performance pour moteur 139QMB. Utilisez cet arbre à cames lors de la mise à niveau du cylindre et de la culasse pour tirer le meilleur parti des performances de votre nouveau kit 72 ou 82cc Lobe d'admission 25.8mm - Lobe d'échappement 25.5mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHigh Performance cam for 139QMB engine. Use this camshaft when upgrading cylinder and head to get the most performance from your new 72cc or 82cc kit. Intake Lobe 25.8mm – Exhaust Lobe 25.5mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"NCY","offers":[{"title":"Default Title","offer_id":43930460979379,"sku":"1100-1250","price":96.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/1100-1250-NCY-Camshaft-2V-25.8-25.5-Performance-139QMB-1000x1000.png?v=1770242733"},{"product_id":"cylinder-kit-ncy-88cc-gy6-50cc-139qmb-qma","title":"Cylinder Kit NCY 88cc GY6 50cc 139QMB\/QMA","description":"\u003cp\u003e\u003cspan\u003eCylindre 88cc pour vous, bien que ce ne soit pas un élément à verrouiller pour la plupart des motos QMB 139. La plupart du temps, les carters moteurs doivent être coupés. Commandez le numéro de pièce 1400-1001, Outil d'alésage de moteur s'il n'y a pas d'accès à un atelier d'usinage. Il est également recommandé d’obtenir le numéro de référence 1100-1239, ainsi que la tête de soupape de 50 mm, car certaines têtes de série ne seront pas compatibles. Jetez un coup d’œil à notre ensemble de tube de décompression qui remplace votre jauge et permet de relâcher une pression excessive dans le carter. Bonne idée d’installer l’un de ceux-ci à côté d’une mise à niveau du kit de cylindre.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThen this 88cc big bore kit for you, although its not a bolt on item for most QMB 139 bikes. Most of the time, engine cases must be cut. Order part number 1400-1001, Engine Bore Tool if there is no access to a machine shop. Its also recommended to get part number 1100-1239, 50mm big valve head as well, as some stock heads will not fit. Have a look at our Decompression Tube Assembly which replaces your dipstick and allows excess crank case pressure to be released. Good idea to install one of these alongside any cylinder kit upgrade.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"NCY","offers":[{"title":"Default Title","offer_id":43930507280563,"sku":"1100-1248","price":200.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6057\/0291\/files\/1100-1237-NCY-Cylinder-50mm-81cc-Big-Bore-Kit-Cast-Piston-139QMB-550x550.png?v=1770242733"},{"product_id":"cylinder-head-ncy-52mm-88cc-gy6-50cc","title":"Cylinder Head NCY 52mm (88cc) GY6 50cc","description":"\u003cp\u003e\u003cspan\u003eCulasse de performance en aluminium NCY 88cc. Culasse en alliage de grande qualité conçue pour fonctionner de manière transparente avec le kit de cylindre 1100-1237 88cc. Donnez à votre QMB139 le pouvoir d’obtenir un peu de respect. Vous pouvez utiliser ce cylindre sur tous les moteurs QMB139 de SYM, Kymco, QLink, Filly 50 ainsi que sur d’autres scooters chinois équipés du moteur QMB139. 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