{"product_id":"rms120107942","title":"Flywheel Yamaha YFZ 450R\/X '09-'24 (RMS120-107942)","description":"\u003cp\u003eNew RMSTATOR Heavy-Duty Flywheel Rotor for Yamaha 450cc ATVs.\u003c\/p\u003e\u003cp\u003eAnyone who rides or repairs Yamaha 450cc ATVs is probably familiar with the flywheel problems common to these models. Most of these machines will experience at least one flywheel failure during their lifetime. Low-quality epoxy is used on OEM flywheels to secure the magnets to the rotor body. Over time and through repeated heat cycles, the epoxy can fail, allowing the magnets to come loose and contact the stator, potentially causing catastrophic damage.\u003c\/p\u003e\u003cp\u003eFor years, service shops and dealerships have offered low-cost repairs for Yamaha flywheels as an alternative to the $400+ OEM replacement. While this may seem like a good idea initially, there are some serious issues.\u003c\/p\u003e\u003cp\u003eA common repair involves using JB Weld Marine Blue Epoxy to reattach loose original magnets or install new ones. These repairs may work in the short term when done correctly. However, they can cause immediate problems and affect the long-term reliability of the ATV.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eA Heavy-Duty Flywheel to the Rescue!\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe new RMSTATOR heavy-duty flywheel rotor for Yamaha 450cc ATVs is a well-priced solution to common OEM flywheel problems and an excellent alternative to the mechanical issues that can arise from repairs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt to OEM size:\u003c\/strong\u003e Fits precisely for straightforward installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved epoxy:\u003c\/strong\u003e Uses high-temperature epoxy that is stronger than OEM, helping prevent magnet detachment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-grade steel capping:\u003c\/strong\u003e Prevents harsh additives in motor oil from degrading the epoxy securing the magnets. If a magnet does come loose, it remains contained within the sleeve, preventing contact with the stator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise balancing:\u003c\/strong\u003e Helps eliminate crankshaft vibrations for longer engine life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShop with confidence:\u003c\/strong\u003e Two-year warranty. All products are tested.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy Cheap Repairs Won't Work\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStronger epoxy repairs may fix flywheel problems in the short term, but they can affect the long-term performance and reliability of the vehicle.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemaining OEM magnets:\u003c\/strong\u003e Original magnets can still come loose at any time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnet alignment:\u003c\/strong\u003e Correct magnet alignment around the flywheel is critical for proper stator operation. Even minor misalignment can significantly reduce stator efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnet spacing:\u003c\/strong\u003e Excessive epoxy or incorrect magnet spacing can affect flywheel balance, potentially causing stator contact or crankshaft damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncorrect replacement magnets:\u003c\/strong\u003e The magnetic field strength of replacement magnets must match the originals. Stronger magnets can quickly cause stator failure, while weaker magnets can significantly reduce stator output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrong epoxy properties:\u003c\/strong\u003e Epoxy not rated to withstand high temperatures and oil immersion permanently can quickly cause serious failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil contamination:\u003c\/strong\u003e Incorrect epoxy can contaminate the crankcase oil and damage the motor.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor these reasons, we strongly recommend replacing a broken flywheel with a new 400+ OEM unit or this new heavy-duty flywheel.\u003c\/p\u003e\u003cp\u003eBefore attempting to start the Yamaha, adjust the air gap. Rotate the flywheel until the raised node is aligned with the pick-up\/pulser coil, then adjust the gap as close as possible, but no less than 0.010\".\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRisk of electric shock. Disconnect the battery before servicing.\u003cbr\u003eEnsure proper installation by a qualified technician to avoid malfunction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExterior diameter: 110 mm\u003c\/li\u003e\n\u003cli\u003eInterior diameter: 99 mm\u003c\/li\u003e\n\u003cli\u003eInterior diameter of centre housing: 30 mm\u003c\/li\u003e\n\u003cli\u003eExterior diameter of centre housing: 33 mm\u003c\/li\u003e\n\u003cli\u003eExterior thickness: 31 mm\u003c\/li\u003e\n\u003cli\u003eInterior thickness: 38 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RMSTATOR","offers":[{"title":"Default Title","offer_id":68151457284324,"sku":"RMS120107942","price":560.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0031\/7531\/7613\/files\/RMS120107942.jpg?v=1793940305","url":"https:\/\/rideshed.co.nz\/products\/rms120107942","provider":"Rideshed","version":"1.0","type":"link"}