{"product_id":"mfc-passion-125cc-150cc-gy6-variator-kit-front-clutch-assembly-red-adjustable-rollers-springs","title":"MFC·passion 125cc–150cc GY6 Variator Kit — Front Clutch Assembly, Red, Adjustable Rollers \u0026 Springs","description":"\u003cstrong\u003ePerformance variator and clutch assembly for GY6 125cc–150cc engines, supplied with multiple roller weights, sliders, clutch springs and a CVT fan to tune acceleration and top speed.\u003c\/strong\u003e\n\nThis MFC·passion variator kit is a complete front-clutch CVT upgrade designed to fit popular 4-stroke GY6-based scooters and small ATVs. Engineered from durable metal components and pre-packaged with changeable roller weights and auxiliary parts, the assembly lets you adjust drive characteristics without machining or specialized tools. The kit works with 152QMI and 157QMJ engines and fits many common Chinese and global scooter brands, giving a practical route to optimize throttle response and cruising behavior.\n\n\u003ch3\u003eHow will swapping roller weights change my scooter's performance?\u003c\/h3\u003e\n\u003cp\u003eChanging roller weights shifts how quickly the variator raises the gear ratio under acceleration. Lighter rollers let the variator climb faster for quicker initial acceleration, while heavier rollers hold the variator lower longer for improved top-end speed once the motor is at higher rpm.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded roller sizes: sets of 5g, 7g and 9g for tuning options.\u003c\/li\u003e\n  \u003cli\u003e18 x 14mm roller dimensions for direct fit in GY6 variators.\u003c\/li\u003e\n  \u003cli\u003eSwap rollers in minutes—no machining required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this variator assembly physically fit my scooter or quad?\u003c\/h3\u003e\n\u003cp\u003eThe assembly is sized for common GY6 125cc and 150cc 4-stroke engines (152QMI \/ 157QMJ). Confirm hub bolt patterns and clutch shaft dimensions before ordering to ensure compatibility with your specific model.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVariator outer diameter: 114.5mm (4.51\") for standard fitment.\u003c\/li\u003e\n  \u003cli\u003eBushing OD 24mm, ID 15mm, length 52mm—matches many factory shafts.\u003c\/li\u003e\n  \u003cli\u003eCompatible with many Zongshen, Lifan, JCL, Taotao and similar models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThis kit supplies the core wear and tuning components you need to overhaul a front CVT drive: rollers, sliders, a CVT fan, clutch springs and the shaft. Having these items together avoids mismatched parts and lets you replace worn elements simultaneously for consistent operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3 x 5g rollers, 3 x 7g rollers, 3 x 9g rollers for tuning choices.\u003c\/li\u003e\n  \u003cli\u003e3 sliders and a CVT fan to restore smooth belt travel and cooling.\u003c\/li\u003e\n  \u003cli\u003e3 clutch springs and a CVT shaft for secure, reliable clutch engagement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and easy to install is this variator kit?\u003c\/h3\u003e\n\u003cp\u003eConstructed from high-quality metal parts, the assembly is built for routine use and replacement service intervals. Installation is straightforward for those familiar with basic CVT service—standard hand tools and a service manual or tutorial are recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal construction resists wear from normal belt and clutch operation.\u003c\/li\u003e\n  \u003cli\u003ePre-measured rollers and bushings simplify the tuning process.\u003c\/li\u003e\n  \u003cli\u003ePackage includes most fast-moving parts so you can complete the job in one session.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for\n\nThis variator kit suits riders, mechanics and DIY enthusiasts who run GY6 125cc–150cc scooters, small quads or go-karts and want to restore worn CVT components or fine-tune drive characteristics. It's a practical option for those replacing an aging variator, experimenting with different acceleration profiles, or performing a full front-clutch refresh without sourcing multiple separate parts.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit 152QMI and 157QMJ engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit is designed for GY6-based 152QMI and 157QMJ 125cc–150cc engines, but verify shaft and hub dimensions before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which roller weights are included for tuning?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package includes three each of 5g, 7g and 9g rollers to adjust acceleration and top speed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MFC·passion","offers":[{"title":"Default Title","offer_id":48085336227998,"sku":"B0DDXH94WW","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mfcpassion-variator-kit-front-assembly.jpg?v=1785869265","url":"https:\/\/northtrailauto.ca\/products\/mfc-passion-125cc-150cc-gy6-variator-kit-front-clutch-assembly-red-adjustable-rollers-springs","provider":"North Trail Auto","version":"1.0","type":"link"}