{"product_id":"fluidampr-harmonic-balancer-underdrive-pulley-2jz-supra-840811","title":"Fluidampr Harmonic Balancer 15% Underdrive Pulley for 2JZ Toyota Supra (840811)","description":"Protect your engine. Modifications can compromise your stock harmonic balancer. Install a Fluidampr performance damper early for best durability. Superior viscous damper design controls harmful torsional vibration across the entire rpm range. Reduce wear on engine components. Reduce risk of crankshaft failure. Improve timing. Unleash lost torque and horsepower. Precision CNC machined and balanced high-grade steel components. Corrosion resistant black zinc finish with engraved timing marks. No maintenance required. Trusted by leading engine builders worldwide. Made in USA. \u003cbr\u003e\u003cstrong\u003eNOTE\u003c\/strong\u003e: 15% underdrive pulley for high rpm applications. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color: #ff2a00;\"\u003eVehicle Fitment:\u003c\/span\u003e\u003cbr\u003e1987-1998 Toyota Supra \u003cbr\u003e1992-2000 Lexus SC 300 \u003cbr\u003e1993-2005 GS300 \u003cbr\u003e2001-2005 IS300\u003cbr\u003e(1JZ \/ 2JZ I6. Underdrive Pulley) \u003cbr\u003e\u003cbr\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr bgcolor=\"2d2d2d\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003ePart Number:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e840811\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eBelt Drive Type:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eSerpentine\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"404040\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eDegree Marking Range:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e-10 to 50 degrees at 2 degree increments. 180 BDC.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eEngine Balance:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eInternal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"404040\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eOutside Diamter:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e8-1\/2\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eBore Diameter:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e1.3783\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"404040\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eLength:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e2.100\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eWeight:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e9.0 pounds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"404040\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eRotating Weight:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003e5.9 pounds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eFinish:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eBlack Zinc, Hard Coat Anodized Pulley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"404040\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eMarerial:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eSteel, Aluminum Pulley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bgcolor=\"505050\"\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eSafety Rating:\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #ffffff;\"\u003eSFI 18.1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cspan style=\"color: #ff2a00;\"\u003eMore Info:\u003c\/span\u003e \u003cbr\u003eFluidampr Engine Dampers are designed to control destructive vibrations which are transferred through the crankshaft. \u003cbr\u003e\u003cbr\u003eEach time the air\/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations. \u003cbr\u003e\u003cbr\u003eCritical harmonic vibrations occur numerous times in a engine’s operating range. Stock rubber and elastomer-type dampers are frequency sensitive “tuned absorbers”, and work at only one critical frequency. In the case of a stock rubber damper, it is tuned for a factory engine’s critical harmonic vibrations. If you change the mass of pistons, rods, or the crankshaft, you change the natural frequency of the crankshaft assembly; therefore, the stock damper is no longer tuned to the new frequency of vibration, and you may be headed for early failure of expensive engine components. Dampers also create heat while they work, and rubber is a poor dissipator of heat. This heat and the exposure to the elements deteriorates rubber, causing it to crack and change durometer, which then leads to inertia ring slippage, damper failure, uncontrolled torsional vibration, and costly engine parts breakage. \u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/stmtuned.com\/collections\/fluidampr-products\" style=\"color: #afafaf;\" target=\"blank\"\u003e\u003cbr\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: .8em;\"\u003e See more Fluidampr Products\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/a\u003e","brand":"Fluidampr","offers":[{"title":"Default Title","offer_id":50561059127638,"sku":"FLU-840811","price":593.59,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/9531\/8102\/files\/fluidampr-harmonic-balancer-underdrive-pulley-2jz-supra-840811-4.jpg?v=1749196636","url":"https:\/\/www.speed-addicts.com\/en\/products\/fluidampr-harmonic-balancer-underdrive-pulley-2jz-supra-840811","provider":"Speed Addicts","version":"1.0","type":"link"}