{"product_id":"competition-clutch-lightweight-flywheel-for-honda-civic","title":"Competition Clutch Lightweight Flywheel for Honda Civic","description":"\u003cul\u003e\n\u003cli\u003eCrafted from durable 4140 forged steel. \u003c\/li\u003e\n\u003cli\u003eWeighs only 11.44 pounds. \u003c\/li\u003e\n\u003cli\u003eSFI certified for safety and performance. \u003c\/li\u003e\n\u003cli\u003eVersatile, fully resurfaced for longevity. \u003c\/li\u003e\n\u003cli\u003eCompatible with 1990-2005 Honda Civic and CRX. \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#TechnicalData\"\u003eTechnical Data\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#InstallGuide\"\u003eInstall Guide\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003csection\u003e\n  \u003ch2\u003eCompetition Clutch Lightweight Steel Flywheel for D-Series Honda Civic, CRX \u0026amp; Del Sol\u003c\/h2\u003e\n\n  \u003cp\u003e\n    This is the street-friendly version of Competition Clutch's D-series flywheel, and for most Civic, CRX, and Del Sol owners, it's the right one. At 11.44 lbs, it drops roughly 6.5 lbs off the stock D-series flywheel (~18 lbs), which is a 36% reduction in rotating mass. You'll notice it immediately: the engine revs faster, drops quicker between shifts, and the whole car feels more responsive. But because CC kept the weight at 11.44 lbs instead of shaving it down further, you won't fight it in traffic or stall at every red light like you would with a 7-8 lb aluminum flywheel.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    If you're building a turbo D-series or a dedicated track car, look at the Competition Clutch Ultra Lightweight (STU) flywheel instead. That one weighs 8.8 lbs and is built for forced induction and racing applications where you want maximum spool and minimum inertia. This page is for the ST version, which is built for street cars, naturally aspirated builds, and daily drivers who want a noticeable improvement without sacrificing livability.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eWhat 11.44 lbs Actually Feels Like\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The D-series community has been running lightweight flywheels for over two decades, and the consensus is clear: 11-12 lbs is the sweet spot for a daily-driven Civic. Here's what you can expect:\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFaster revs, faster drops.\u003c\/strong\u003e With 36% less rotating mass, the engine spins up noticeably quicker when you hit the gas and comes down faster when you lift. You'll feel this most during rev-matching on downshifts and when blipping the throttle between gears. It makes the whole drivetrain feel sharper.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eSlightly more attention at low RPM.\u003c\/strong\u003e Compared to the stock 18 lb flywheel, you have less inertia keeping the engine spinning at idle and low RPM. This means you need to be a little more deliberate with the clutch off the line, especially in first gear. It's not the \"I'm going to stall this thing constantly\" experience people have with 7-8 lb flywheels. It's more like the car reminds you it's not stock. After a day or two of driving, you won't think about it.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eBetter for autocross and road course.\u003c\/strong\u003e The reduced inertia helps the engine change speed faster, which is exactly what you want when you're constantly accelerating and braking through corners. You'll notice quicker transitions and better throttle response in the mid-range.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eNot ideal for drag racing.\u003c\/strong\u003e This is worth being upfront about. Lighter flywheels hurt 60' times because you have less stored energy to launch from a stop. One D-series racer reported going from 1.99s to 2.12-2.16 60' times after dropping from 18 lbs to 12.5 lbs. If your car is a dedicated drag car, stick with the stock flywheel weight. If you're doing anything that involves corners, the lighter flywheel wins.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eD-Series Flywheel Weight Comparison\u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eFlywheel\u003c\/th\u003e\n        \u003cth\u003eWeight\u003c\/th\u003e\n        \u003cth\u003eMaterial\u003c\/th\u003e\n        \u003cth\u003eBest For\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOEM D16Z6 \/ D15B7 \/ D16Y8\u003c\/td\u003e\n        \u003ctd\u003e~18 lbs\u003c\/td\u003e\n        \u003ctd\u003eCast iron\/steel\u003c\/td\u003e\n        \u003ctd\u003eStock replacement, drag racing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOEM VX \/ CX (lighter variant)\u003c\/td\u003e\n        \u003ctd\u003e~15-17.5 lbs\u003c\/td\u003e\n        \u003ctd\u003eCast iron\/steel\u003c\/td\u003e\n        \u003ctd\u003eBudget option (if you can find one)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eACT Streetlite (600120)\u003c\/td\u003e\n        \u003ctd\u003e~12 lbs\u003c\/td\u003e\n        \u003ctd\u003eForged steel\u003c\/td\u003e\n        \u003ctd\u003eStreet, drag racing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eCompetition Clutch ST (2-702-ST)\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003e11.44 lbs\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003e4140 forged steel\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eStreet, autocross, daily driving\u003c\/strong\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCompetition Clutch STU (2-702-STU)\u003c\/td\u003e\n        \u003ctd\u003e8.8 lbs\u003c\/td\u003e\n        \u003ctd\u003e4140 forged steel\u003c\/td\u003e\n        \u003ctd\u003eTurbo builds, track, rally\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFidanza aluminum\u003c\/td\u003e\n        \u003ctd\u003e~7-8 lbs\u003c\/td\u003e\n        \u003ctd\u003eAluminum (with steel friction insert)\u003c\/td\u003e\n        \u003ctd\u003eDedicated race car, autocross\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\n    The CC ST lands right between the ACT Streetlite and the CC STU. It's half a pound lighter than the ACT, which you won't feel in the seat, but both are in that 11-12 lb range that the D-series community has settled on as the best balance of response and drivability. The real choice here is between the ST and the STU: if you're naturally aspirated and driving on the street, the ST is the better flywheel. If you're turbo or track-only, look at the STU.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eConstruction\u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003e4140 forged steel, one-piece design.\u003c\/strong\u003e This matters more than it sounds. Cheaper flywheels use a two-piece design with a separate ring gear pressed onto the body. Over time (and especially under heat from aggressive clutch engagement), the ring gear can separate or shift. The one-piece forged design eliminates that risk entirely. The friction surface is also integral to the body, which means more consistent heat transfer and less chance of warpage under heavy use.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eSFI 1.1 certified.\u003c\/strong\u003e If you're running a sanctioned event that requires SFI-rated drivetrain components, this flywheel meets the spec. Most street drivers won't need the certification, but it's a good indicator that the part has been tested to handle sustained high-RPM operation without failure.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eResurfaceable.\u003c\/strong\u003e Unlike aluminum flywheels that need a replacement steel insert when the friction surface wears, this is a solid steel flywheel that any machine shop can resurface. When you swap to a new clutch down the road, have the flywheel surface cut and reuse it. This flywheel should outlast multiple clutch changes.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eClutch Pairing\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Competition Clutch recommends the ST flywheel for use with Gravity, Stage 1, and Stage 2 clutch kits. These are full-face disc clutches with smooth engagement that complement the moderate weight of the ST flywheel.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Can you run a Stage 3 or Stage 4 puck clutch with this flywheel? Yes, it's physically compatible with all Competition Clutch D-series clutch kits (and most other aftermarket D-series clutches). But if you're running a Stage 3 or higher, you're likely making enough power that the STU flywheel's faster spool characteristics are more useful, and you've already accepted the trade-offs that come with an aggressive clutch disc.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    For a naturally aspirated D16 or D15 with a bolt-on build, the ST flywheel paired with a Competition Clutch Stage 1 or Stage 2 is an excellent combo. It sharpens up the driving experience without making the car a chore in traffic.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\n  \u003cp\u003e\n    This flywheel fits all D-series SOHC engines (D15, D16, D17) across the following platforms:\n  \u003c\/p\u003e\n\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eVehicle\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eChassis Code\u003c\/th\u003e\n        \u003cth\u003eEngines\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Civic (all trims)\u003c\/td\u003e\n        \u003ctd\u003e1988-1991\u003c\/td\u003e\n        \u003ctd\u003eEF\u003c\/td\u003e\n        \u003ctd\u003eD15B1, D15B2, D16A6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda CRX (all trims)\u003c\/td\u003e\n        \u003ctd\u003e1988-1991\u003c\/td\u003e\n        \u003ctd\u003eEF\u003c\/td\u003e\n        \u003ctd\u003eD15B2, D15B6, D16A6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Civic (all trims)\u003c\/td\u003e\n        \u003ctd\u003e1992-1995\u003c\/td\u003e\n        \u003ctd\u003eEG\u003c\/td\u003e\n        \u003ctd\u003eD15B7, D15B8, D16Z6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Civic del Sol\u003c\/td\u003e\n        \u003ctd\u003e1993-1997\u003c\/td\u003e\n        \u003ctd\u003eEG\/EH\u003c\/td\u003e\n        \u003ctd\u003eD15B7, D16Z6, D16Y8\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Civic (all trims)\u003c\/td\u003e\n        \u003ctd\u003e1996-2000\u003c\/td\u003e\n        \u003ctd\u003eEK\u003c\/td\u003e\n        \u003ctd\u003eD16Y5, D16Y7, D16Y8\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Civic (DX, LX, EX, HX)\u003c\/td\u003e\n        \u003ctd\u003e2001-2005\u003c\/td\u003e\n        \u003ctd\u003eEM\/ES\u003c\/td\u003e\n        \u003ctd\u003eD17A1, D17A2, D17A6\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eThis flywheel does not fit B-series, K-series, H-series, or any DOHC engine.\u003c\/strong\u003e If you have a 2002-2005 Civic Si (K20A3) or an RSX, those use K-series flywheels. If you have a 1999-2000 Civic Si (B16A2), that uses a B-series flywheel. This is a D-series SOHC flywheel only.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eReplace your clutch at the same time.\u003c\/strong\u003e You're already pulling the transmission to get to the flywheel. Install a new clutch disc, pressure plate, throw-out bearing, and pilot bearing while everything is apart. Doing the flywheel alone and reusing an old clutch is wasting labor.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eTorque the flywheel bolts to spec.\u003c\/strong\u003e D-series flywheel bolts should be torqued to 76 ft-lbs (per Honda FSM). Use new bolts if the originals show any signs of stretching. Some builders apply a small amount of threadlocker; check your clutch manufacturer's instructions.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eInspect the rear main seal.\u003c\/strong\u003e Oil on the flywheel friction surface means a slipping clutch, regardless of how good the clutch is. If the rear main is seeping, replace it now.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eBreak-in period.\u003c\/strong\u003e Drive gently for the first 300-500 miles. No hard launches, no high-RPM clutch drops. Let the clutch disc bed into the new flywheel surface.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eNote for 1988-1989 Civic\/CRX owners:\u003c\/strong\u003e Some 88-89 models may require a 1990+ clutch kit for proper fitment with aftermarket flywheels. Verify your clutch disc spline count and diameter before ordering.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eSpecs\u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eHybrid Racing SKU:\u003c\/strong\u003e COC-2-702-ST\u003cbr\u003e\n    \u003cstrong\u003eCompetition Clutch Part Number:\u003c\/strong\u003e 2-702-ST\u003cbr\u003e\n    \u003cstrong\u003eWeight:\u003c\/strong\u003e 11.44 lbs\u003cbr\u003e\n    \u003cstrong\u003eMaterial:\u003c\/strong\u003e 4140 forged steel, one-piece construction\u003cbr\u003e\n    \u003cstrong\u003eCertification:\u003c\/strong\u003e SFI 1.1\u003cbr\u003e\n    \u003cstrong\u003eResurfaceable:\u003c\/strong\u003e Yes\u003cbr\u003e\n    \u003cstrong\u003eClutch Compatibility:\u003c\/strong\u003e All D-series clutch assemblies (stock and aftermarket)\u003cbr\u003e\n    \u003cstrong\u003eRecommended Clutch Stages:\u003c\/strong\u003e Gravity, Stage 1, Stage 2 (compatible with all stages)\u003cbr\u003e\n    \u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e D15, D16, D17 SOHC\u003cbr\u003e\n    \u003cstrong\u003eFlywheel Included:\u003c\/strong\u003e Yes (this is a flywheel, clutch kit sold separately)\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eWho Should Buy This (And Who Shouldn't)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eThis flywheel is built for:\u003c\/strong\u003e Daily-driven Civics, CRXs, and Del Sols with D-series engines. Naturally aspirated builds with bolt-ons. Autocross and road course cars where throttle response matters more than launch consistency. Anyone who wants a noticeable improvement in how the car revs without making the car annoying to drive every day.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eLook at the STU instead if:\u003c\/strong\u003e You're running a turbo D-series and want faster spool. You're building a dedicated track car. You're running a Stage 3 or higher clutch. You've driven a light flywheel before and know you can handle the reduced inertia at low RPM.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eKeep the stock flywheel if:\u003c\/strong\u003e Your car is a dedicated drag car and 60' times matter. You don't want to change anything about how the car drives at low speed. You're replacing a clutch on a bone-stock commuter and just need it to work like it did from the factory.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cspan class=\"tag\"\u003e1988-1991 Honda CRX \u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e1996-2000 Honda Civic \u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e1992-1995 Honda Civic \u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e2001-2005 Honda Civic \u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e2001-2005 Honda Civic EX\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e1988-1991 Honda Civic \u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"tag\"\u003e1993-1997 Honda Civic del Sol \u003c\/span\u003e\u003cbr\u003e \n\u003c\/li\u003e\n\n\n\n\n\u003cli id=\"TechnicalData\"\u003e\n\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003cli id=\"InstallGuide\"\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n","brand":"Competition Clutch","offers":[{"title":"Default Title","offer_id":44813828030498,"sku":"COC-2-702-ST","price":225.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/31360313_caa62b3b-1c5a-4553-8970-b1d0d50f4ffc.JPG?v=1770432415","url":"https:\/\/www.hybrid-racing.com\/products\/competition-clutch-lightweight-flywheel-for-honda-civic","provider":"Hybrid Racing","version":"1.0","type":"link"}