Competition Clutch 16+ Honda Civic 1.5T Stage 2 Organic Steel Flywheel w/ 22lbs
Once a 1.5T Civic Si gets a tune or bolt-ons, the stock clutch tends to slip in the upper gears, and many owners also want to get rid of the factory dual mass flywheel before it starts to rattle. Competition Clutch 8091-ST-2100 combines a Stage 2 Street Series clutch with a 22 lb single mass steel flywheel. It is the choice for a Si that still sees commuting and stop and go traffic: more holding power than stock, with a flywheel heavy enough to keep pulling away from a light easy.
Competition Clutch rates its Stage 2 Street Series 2100 kits at up to 80 percent more torque capacity than stock and describes them as suited to aggressive street use and moderate track use. The disc is a high torque sprung design with anti-burst, steel backed facings, paired with a Competition Clutch performance pressure plate for smooth engagement and long life. The kit also includes the throw out bearing and pilot bearing or bushing where the car uses them, plus an alignment tool.
The ST in the part number is the heavier of the two steel flywheels Competition Clutch offers for this car. At 22 lb it keeps more rotating mass than the 17 lb STU option, so idle is steadier, low rpm launches need less throttle, and the car is more forgiving in parking lots and on hills. If you want the engine to rev and drop between shifts as quickly as possible, the 8091-STU-2100 with the 17 lb flywheel is the lighter version of this same clutch.
Check for slip with a full throttle pull from roughly 2,500 rpm in fourth gear. If the tach climbs and road speed does not keep up, the disc is slipping. Before blaming the clutch, bleed the hydraulics and check the slave cylinder; a leaking master or slave cylinder causes a soft or sinking pedal that can feel like a worn clutch. Our slipping diagnosis guide explains how to tell real slip from other drivetrain faults, and the manual repair cost guide helps with the budget.
Competition Clutch lists 8091-ST-2100 for the 2017-2023 Honda Civic Si with the 1.5 liter turbo and six speed manual. The 16+ in our listing title comes from the catalog name, but there was no 2016 Civic Si, and CVT Civics cannot use any manual clutch kit; those owners should read our Honda CVT maintenance guide instead. The 2022-2023 Si is the eleventh generation car, and some clutch brands catalog separate parts for it, so 2022-2023 owners should send us the VIN before ordering. The Civic Type R uses a 2.0 liter engine and different clutch hardware. If you are not sure, send your year and VIN and we will check it before it ships.
Expect some extra gear rattle at idle once the dual mass flywheel is gone; that is normal for any single mass setup. For bigger turbo builds, the Stage 3 segmented ceramic kit holds more torque at the cost of a sharper engagement.
| Brand | Competition Clutch |
| Part number | 8091-ST-2100 |
| Fits | Competition Clutch 16+ Honda Civic 1.5T Stage 2 Organic Steel Flywheel w/ 22lbs |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Competition Clutch lists it for the 2017-2023 Honda Civic Si with the 1.5 liter turbo and six speed manual. Owners of 2022-2023 cars should send us a VIN to confirm before ordering.
Choose the 22 lb ST flywheel if the car is a daily driver with lots of traffic or hills. The 17 lb STU version revs faster but needs more care on low speed starts.
Competition Clutch rates its Stage 2 Street Series 2100 kits at up to 80 percent more torque capacity than the stock clutch.
A Competition Clutch performance pressure plate, a sprung Stage 2 disc, the 22 lb steel flywheel, throw out bearing and pilot bearing or bushing where applicable, and an alignment tool.
No. CVT Civics have no clutch pedal or flywheel to replace, and the Type R uses a 2.0 liter engine with different clutch parts.
