Competition Clutch 16+ Honda Civic 1.5T Stage 3 Segmented Ceramic Clutch Steel Flywheel w/ 22lbs
Competition Clutch 8091-ST-2600 is a Stage 3 segmented ceramic clutch packaged with a 22 lb steel flywheel for the six-speed 1.5 liter turbo Civic Si, 2017 through 2023. It is aimed at the owner whose tuned Si now slips on a hard pull, who wants clutch capacity for a bigger turbo or launches, but who still wants a flywheel heavy enough to drive easily in traffic.
The L15 turbo engine makes its torque early, so the clutch sees full load almost as soon as boost builds in second or third gear. Competition Clutch's Stage 3 answer is a high-torque sprung disc with segmented ceramic facings and a performance pressure plate, rated at up to 150 percent more torque capacity than stock. Ceramic holds its friction when hot, which is what a street and strip car needs, while the sprung center still damps driveline shock on the road.
The ST in the part number is the flywheel choice. This kit uses the 22 lb steel flywheel; the 8091-STU-2600 version pairs the same Stage 3 clutch with a lighter 17 lb flywheel. The heavier wheel carries more inertia, so the car is less likely to bog or stall pulling away and it idles more like stock, at the cost of slightly slower rev changes between shifts. If most of your miles are on the street with the occasional drag strip visit, the 22 lb option is the gentler pick. Per Competition Clutch, the kit also includes a throwout bearing and a pilot bearing or bushing where the application uses one, along with an alignment tool. The packed kit ships at about 41 lb.
With the engine warm, cruise in fourth at low rpm, then go wide open and watch the tach against the speedometer. Rpm racing ahead of speed is clutch slip; follow the full checklist in our transmission slipping diagnosis guide. Before buying, check the clutch master and slave for leaks and a soft or slow-returning pedal, and look for oil at the bellhousing, since a rear main or input seal leak will contaminate any new disc. If your car is close to stock power, the organic Stage 2 kit with the same 22 lb flywheel is smoother and costs less.
Competition Clutch lists 8091-ST-2600 for the 2017-2023 Honda Civic Si with the 1.5L turbo and six-speed manual. Our listing title says 16+, but the 2016 1.5T Civic came only with a CVT, so treat this as a 2017-and-later part. The manual Civic Sport and Sport Touring hatchbacks share the 1.5T engine; if you own one, send us your year and VIN so we can confirm the flywheel and disc before it ships. It is not for CVT cars, the 2.0L Civic or the Type R. See the rest of our performance clutches in the hard parts section.
For a different feel on the same car, compare the ACT HC10-HDG6 race sprung kit.
| Brand | Competition Clutch |
| Part number | 8091-ST-2600 |
| Fits | Competition Clutch 16+ Honda Civic 1.5T Stage 3 Segmented Ceramic Clutch Steel Flywheel w/ 22lbs |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
The clutch is the same Stage 3 segmented ceramic setup. ST comes with a 22 lb steel flywheel and STU comes with a lighter 17 lb steel flywheel. The 22 lb version is easier to drive in traffic; the 17 lb version revs faster.
The 2016 Civic with the 1.5T was CVT only, so there is no manual 1.5T car for 2016. Competition Clutch lists this kit for the 2017-2023 Civic Si.
A performance pressure plate, a high-torque sprung disc with segmented ceramic facings, the 22 lb steel flywheel, a throwout bearing and pilot bearing or bushing where the application uses them, and an alignment tool.
Competition Clutch rates Stage 3 at up to 150 percent more torque capacity than the factory clutch.
Competition Clutch builds Stage 3 for street and strip use and uses a sprung hub to soften engagement, but ceramic grabs more abruptly than organic. Lightly modified daily drivers are usually better served by the Stage 2 organic kit.
