{"product_id":"mfactroy-d-series-final-drive-gear-set","title":"MFactory D15\/D16 Final Drive Gear Set for 92-00 Civic","description":"\u003cul\u003e\n\u003cli\u003eQuicker Acceleration in Every Gear \u003c\/li\u003e\n\u003cli\u003eAvailable in Three Final Drive Gear Ratios \u003c\/li\u003e\n\u003cli\u003eSpeedometer Correction Required \u003c\/li\u003e\n\u003cli\u003eWorks with D15 and D16 Transmissions \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 \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eMFactory Final Drive Gear Set - D15 \u0026amp; D16 (4.50, 4.70, 4.90)\u003c\/h3\u003e\n\n\u003cp\u003eA final drive change is the cheapest real acceleration you can buy for a D-series. You're not making more power, you're multiplying the power you already have through every single gear. On an engine that was never going to make big numbers, that's often the smartest money in the whole build. Available in 4.50, 4.70, and 4.90 to suit how you actually use the car.\u003c\/p\u003e\n\n\u003ch4\u003eWhat A Final Drive Actually Changes\u003c\/h4\u003e\n\n\u003cp\u003eWorth explaining properly, because it's easy to confuse with a gearset.\u003c\/p\u003e\n\n\u003cp\u003eYour final drive is the last gear reduction between the transmission and your wheels. Every gear passes through it, which means changing it affects all of them at once. A gearset changes individual gear ratios. A final drive shifts the whole transmission.\u003c\/p\u003e\n\n\u003cp\u003eGo numerically higher and you get more torque multiplication at the wheels in every gear. The car accelerates harder, pulls out of corners more willingly, and feels considerably more alive off the line.\u003c\/p\u003e\n\n\u003cp\u003eThe trade is speed per gear. You'll be shifting sooner, your rpm at a given road speed goes up, and top speed comes down. On a D-series that's usually a good trade, since you're rarely running out of road and you're frequently wishing the car pulled harder.\u003c\/p\u003e\n\n\u003ch4\u003eKnow Your Starting Point\u003c\/h4\u003e\n\n\u003cp\u003eThis matters more than people expect, because how much change you get depends entirely on what you're coming from.\u003c\/p\u003e\n\n\u003cp\u003eA \u003cstrong\u003eD16Z6\u003c\/strong\u003e typically runs a 4.250 final drive from the factory. Moving to a 4.70 is a meaningful step, and a 4.90 is aggressive.\u003c\/p\u003e\n\n\u003cp\u003eA \u003cstrong\u003eD16Y8\u003c\/strong\u003e typically runs 3.722, which is considerably taller. From there, even a 4.50 is a big change, and a 4.90 transforms the car entirely.\u003c\/p\u003e\n\n\u003cp\u003eSo a Y8 owner and a Z6 owner buying the same 4.70 are having very different experiences. Check what you're actually starting with before you decide how far to go, because the same part number means different things depending on your transmission.\u003c\/p\u003e\n\n\u003ch4\u003eWhich Ratio Should You Pick?\u003c\/h4\u003e\n\n\u003cp\u003eThree options, and the right one depends on what the car is for and where you're starting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e4.50 (MFT-TRS-02D45)\u003c\/strong\u003e is the moderate step from a Z6 and a substantial one from a Y8. Noticeably quicker while keeping highway rpm reasonable. If the car is a daily you also enjoy, this is the safe pick and you won't regret it on a road trip.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e4.70 (MFT-TRS-02D47)\u003c\/strong\u003e is the middle ground and probably the most popular. A real change in how the car accelerates, still livable on the street, and well suited to autocross or a weekend car that occasionally sees a highway.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e4.90 (MFT-TRS-02D49)\u003c\/strong\u003e is the aggressive option. Excellent for autocross, track use, and tight technical driving where you're living in the low gears. On the highway you'll be spinning noticeably higher rpm, and that gets tiring on a long drive.\u003c\/p\u003e\n\n\u003cp\u003eBe honest about your commute before picking. Almost everyone wants the shortest ratio until they've driven ninety minutes on the freeway with it.\u003c\/p\u003e\n\n\u003ch4\u003ePair It With A Limited Slip\u003c\/h4\u003e\n\n\u003cp\u003eWorth thinking about seriously, because this is where a lot of the gain actually gets realized.\u003c\/p\u003e\n\n\u003cp\u003eMore torque multiplication means more torque at the wheels, and on a front-drive car with an open differential, more torque at the wheels means more wheelspin from the unloaded side. A shorter final drive can genuinely make an open-diff car worse out of a corner, because you're feeding more torque into a system with no way to manage it.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/mfactory-helical-limited-slip-differential-honda-d-series?_pos=3\u0026amp;_sid=1e95190af\u0026amp;_ss=r\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMFactory limited slip differential for the D-series\u003c\/a\u003e is what fixes that. It sends power to the wheel with grip instead of the one spinning, so the gearing you paid for actually reaches the road.\u003c\/p\u003e\n\n\u003cp\u003eAnd practically, both parts require splitting the transmission case. Doing them together means one job instead of two, which on a gearbox that has to come out of the car is a significant saving in time and money.\u003c\/p\u003e\n\n\u003ch4\u003eWhat Else To Sort While You're In There\u003c\/h4\u003e\n\n\u003cp\u003eInstalling a final drive means the case is apart, so use the access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eYour speedometer will read wrong.\u003c\/strong\u003e Changing the final drive changes how fast the output turns relative to your wheels, so your speedo and odometer will be off. Plan on a correction, whether that's a speedo gear, a recalibration, or accounting for it in your gauges.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInspect bearings and seals.\u003c\/strong\u003e Anything you have to remove to reach the ring gear should go back in fresh if it has real miles on it. Axle seals and bearings cost almost nothing next to the labor of getting to them.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLook at your synchros.\u003c\/strong\u003e On a Civic that's now thirty years old, this is the ideal moment to deal with grinding rather than pulling the transmission again in a year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMention it to your tuner.\u003c\/strong\u003e Gearing changes how load builds in each gear, so if the car is tuned it's worth a conversation.\u003c\/p\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cp\u003e1992-2000 Honda Civic\u003cbr\u003e1993-1997 Honda Del Sol\u003c\/p\u003e\n\n\u003cp\u003eFits D15 and D16 transmissions with S20 and S40 cases. Select your ratio at checkout.\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Run One\u003c\/h4\u003e\n\n\u003cp\u003eThis is for the D-series owner who's realized their engine is never going to make big power and has decided to make the power it has count for more. Autocross, canyon roads, or a street car you want feeling urgent rather than adequate. It transforms how the car accelerates without touching the engine, and on a chassis this light the difference is immediate. Check what you're starting from, pick your ratio honestly, sort your speedo, and go enjoy a car that finally pulls.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 1992-2000 Honda Civic and 1993-1997 Honda Del Sol, D15 and D16 transmissions with S20 or S40 cases. \u003cstrong\u003ePart numbers:\u003c\/strong\u003e MFT-TRS-02D45 (4.50), MFT-TRS-02D47 (4.70), MFT-TRS-02D49 (4.90). \u003cstrong\u003eNote:\u003c\/strong\u003e speedometer correction required after installation. Pairs with the \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/mfactory-helical-limited-slip-differential-honda-d-series?_pos=3\u0026amp;_sid=1e95190af\u0026amp;_ss=r\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMFactory D-series LSD\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e1992-1995 Honda Civic CX\/DX\/EX\/LX\/VX\/Si\u003cbr\u003e1996-2000 Honda Civic CX\/DX\/EX\/LX\u003cbr\u003e1993-1997 Honda Del Sol S\/Si\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"MFactory","offers":[{"title":"4.50 Final","offer_id":46789000790050,"sku":"MFT-TRS-02D45","price":699.95,"currency_code":"USD","in_stock":false},{"title":"4.70 Final","offer_id":46789000822818,"sku":"MFT-TRS-02D47","price":699.95,"currency_code":"USD","in_stock":false},{"title":"4.90 Final","offer_id":46789000855586,"sku":"MFT-TRS-02D49","price":699.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/mfactory-d15-d16-final-drive-g_55e0.jpg?v=1788366698","url":"https:\/\/www.hybrid-racing.com\/products\/mfactroy-d-series-final-drive-gear-set","provider":"Hybrid Racing","version":"1.0","type":"link"}