{"product_id":"poleas-de-embrague-minarelli-horizontal-d-122mm-top-performance","title":"Minarelli horizontal clutch pulleys d=122mm Top performance","description":"\u003cp\u003e\u003cstrong\u003ePulleys clutch\u003c\/strong\u003e d=122mm \u003cstrong\u003eTop performances\u003c\/strong\u003e for \u003cstrong\u003eMinarelli\u003c\/strong\u003e horizontal.\u003c\/p\u003e\n\u003cp\u003eUnlike a conventional clutch pulley set, this system integrates a \u003cstrong\u003evariable profile cam mechanism\u003c\/strong\u003e that allows the engine to remain at its maximum power range constantly, maximizing both \u003cstrong\u003eacceleration\u003c\/strong\u003e and \u003cstrong\u003erecovery\u003c\/strong\u003e. The increased diameter of \u003cstrong\u003e122mm\u003c\/strong\u003e compared to the standard 107-115mm \u003cstrong\u003eprovides\u003c\/strong\u003e a larger contact surface with the belt and a more effective transmission ratio.\u003c\/p\u003e\n\u003cp\u003eThe system is based on two \u003cstrong\u003ecam profiles\u003c\/strong\u003e with \u003cstrong\u003edifferent inclination angles\u003c\/strong\u003e (angle α), selectable by repositioning three anchoring pins. The profile with the greater inclination (higher α angle) is \u003cstrong\u003ecalibrated\u003c\/strong\u003e for \u003cstrong\u003emedium-low preparation levels\u003c\/strong\u003e, while the profile with the lower inclination optimizes response for high-performance setups. This adjustment allows you to modify the clutch engagement point and adapt the transmission curve to the engine’s specific power map.\u003c\/p\u003e\n\u003cp\u003eThe converter is made of \u003cstrong\u003ehigh-strength steel\u003c\/strong\u003e with heat treatment, and incorporates needle bearings and sealing O-rings. The kit includes a racing contrast spring with a preload increased by 16% compared to the original, which reduces power loss due to slippage and improves response feel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulleys diameter:\u003c\/strong\u003e \u003cstrong\u003e122mm\u003c\/strong\u003e (increased compared to the standard 107-115mm) for greater transmission capacity and better torque utilization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable cam system:\u003c\/strong\u003e Two interchangeable cam profiles via anchoring pins, allowing you to adapt the \u003cstrong\u003einclination angle (α)\u003c\/strong\u003e to the engine’s preparation level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetition-grade materials:\u003c\/strong\u003e Made of \u003cstrong\u003ehigh-strength alloy steel\u003c\/strong\u003e with heat treatment to withstand high temperatures and extreme workloads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRacing spring included:\u003c\/strong\u003e Contrast spring with \u003cstrong\u003e+16% preload\u003c\/strong\u003e to reduce slippage and improve instant power transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical compatibility:\u003c\/strong\u003e Specifically designed for \u003cstrong\u003eMinarelli\/Yamaha 50cc Horizontal AC\/LC\u003c\/strong\u003e engines (Aerox, Nitro, Booster, Jog R, etc.).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical maintenance:\u003c\/strong\u003e Requires periodic inspection of pins and cam grooves, and replacement of \u003cstrong\u003emolybdenum disulfide\u003c\/strong\u003e grease every 10,000 km to ensure proper functioning of the cam system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant note:\u003c\/strong\u003e On Booster 2004 models, it is necessary to partially machine the crankcase ribs due to the increased diameter of the pulleys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsage classification:\u003c\/strong\u003e Component designed and approved exclusively for \u003cstrong\u003ecompetition use\u003c\/strong\u003e. Not suitable for use on public roads.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TopPerformances","offers":[{"title":"Default Title","offer_id":54897760436609,"sku":"9923030","price":97.14,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/6223\/5959\/files\/9923030.jpg?v=1761642155","url":"https:\/\/motoscoot.net\/en\/products\/poleas-de-embrague-minarelli-horizontal-d-122mm-top-performance","provider":"Motoscoot","version":"1.0","type":"link"}