{"product_id":"clutch-masters-93-98-nissan-skyline-rb25det-eng-japan-motor-trans-steel-flywheel","title":"Clutch Masters 93-98 Nissan Skyline RB25DET Eng. ( Japan Motor \u0026 Trans) Steel Flywheel","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eFW-620S-SF\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eClutch Masters 93-98 Nissan Skyline RB25DET Eng. (Japan Motor \u0026amp; Trans) Steel Flywheel\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Clutch Masters FW-620S-SF is a precision steel flywheel built for 1993-1998 Nissan Skyline R33 models with RB25DET engines and Japan-spec motors\/transmissions. It delivers reliable engagement, heat resistance, and consistent power transfer for daily driving or track sessions. Pair it with stock or performance clutches for enhanced throttle response and durability.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet 1045 Steel Construction:\u003c\/strong\u003e Resists warping and handles high heat for long-term reliability in demanding conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight at 21.5 lbs:\u003c\/strong\u003e Cuts rotational mass versus stock 28 lb flywheel for faster engine revving and acceleration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Balanced:\u003c\/strong\u003e Minimizes vibrations for smooth operation across all RPM ranges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e140-Tooth Ring Gear:\u003c\/strong\u003e Ensures direct bolt-on fit with RB25DET starter and clutch systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Mass Design:\u003c\/strong\u003e Maintains OEM-like feel while supporting aggressive driving and modified setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFits JDM RB25DET motors and transmissions only, not USDM or aftermarket swaps\u003c\/li\u003e\n\u003cli\u003eInspect clutch disc and pressure plate condition during replacement\u003c\/li\u003e\n\u003cli\u003eStandard ground shipping with protective packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eTorque flywheel bolts to 60-70 ft-lbs in crisscross pattern after applying thread locker\u003c\/li\u003e\n\u003cli\u003eCompatible with Clutch Masters FX or SX clutch kits, OEM hardware reusable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1993-1998\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR33 GTS25t RB25DET (JDM Motor\/Trans)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1993-1994\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR33 GTS25 Type S\/M (RB25DET JDM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1995-1998\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR33 GTS-t Type M\/S\/X (RB25DET JDM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Clutch Masters?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOver 30 years engineering clutch and flywheel systems for import performance vehicles\u003c\/li\u003e\n\u003cli\u003eUSA-made components with strict quality control for consistent results\u003c\/li\u003e\n\u003cli\u003eDesigned for real-world street and track demands with proven durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this flywheel fit non-JDM RB25DET motors or transmissions?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e No, FW-620S-SF is engineered exclusively for Japan-spec RB25DET motors and transmissions in 93-98 R33 Skylines. Verify your setup matches JDM components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material and weight savings does it offer?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Machined from billet 1045 steel weighing 21.5 lbs, it sheds about 6.5 lbs from stock for quicker revs without sacrificing strength.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty covers this flywheel?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by Clutch Masters limited warranty against defects in materials and workmanship for 12 months with proper installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Standard ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective cardboard box, 16 x 16 x 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 22 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Clutch Masters","offers":[{"title":"Default Title","offer_id":39882642096207,"sku":"CLMFW-620S-SF","price":441.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/clutch-masters-93-98-nissan-skyline-rb25det-eng_-japan-motor-trans-steel-flywheel-clutch-masters.jpg?v=1773127055","url":"https:\/\/www.blackopsautoworks.com\/products\/clutch-masters-93-98-nissan-skyline-rb25det-eng-japan-motor-trans-steel-flywheel","provider":"Black Ops Auto Works","version":"1.0","type":"link"}