ACT 1999 Acura Integra Sport/Race Sprung 6 Pad Clutch Kit
ACT AI4-SPG6 is the lightest-pedal race clutch ACT makes for the B-series Acura Integra. It suits a 1999 Integra GS-R, LS or Type R that autocrosses, sees track days or gets launched hard, where an organic street disc keeps glazing, but where the owner does not want the heavy pedal of an Xtreme plate. It combines ACT's Sport pressure plate with a six-pad ceramic disc on a sprung hub, rated at 280 ft-lb.
On the Integra the clutch sits between the B18 flywheel and the five-speed transaxle, and a hydraulic slave moves the release fork. The Sport plate is the first step above stock in ACT's lineup: its diaphragm raises clamp load and resists deflection without the jump in pedal effort that the Heavy Duty and Xtreme plates bring. Where the friction material sits is the big change. Instead of a full ring of organic lining, the 6220110 disc carries six ceramic pads, which tolerate far more heat before they fade. ACT's numbers for the kit:
ACT is direct about the trade: the six-pad disc engages harshly but shifts faster. If the car is mostly a commuter, the AI4-SPSS uses the same Sport plate with an organic street disc. If 280 ft-lb is not enough for a boosted B18, the AI4-HDG6 moves to the Heavy Duty plate.
Check the simple things first. A low or dark clutch reservoir, a weeping slave or air in the line can stop the clutch from releasing fully and make shifts grind. Bleed it and see whether the problem stays. To prove slip, use a high gear at low rpm and go to full throttle; if the tach moves faster than the speedometer, the disc is slipping. Our slipping diagnosis guide walks through that test, and the clutch slipping causes and fixes page covers oil contamination and worn release parts.
The title on our listing says 1999. ACT's application chart lists AI4-SPG6 for the 1994-2001 Acura Integra 1.8L with the B18B1, B18C1 or B18C5 and the five-speed, the 1994-1997 Honda Civic del Sol VTEC, the 1999-2000 Civic Si, and the 1998-2001 CR-V EX and LX 2.0L. It is not for D-series or K-series cars, or the earlier 1990-1993 Integras. Because B-series swaps are everywhere, go by the engine and transaxle in the car, not the badge; send us the year and VIN, or the engine and gearbox codes, if in doubt. The full range of Integra clutches is in our clutch and rebuild kits collection.
| Brand | ACT |
| Part number | AI4-SPG6 |
| Fits | ACT 1999 Acura Integra Sport/Race Sprung 6 Pad Clutch Kit |
| Vehicle fitment | Acura Integra Sport/Race Sprung 6 (1999) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
ACT lists the 1994-2001 Integra 1.8L (B18B1, B18C1, B18C5) five-speed, 1994-1997 Civic del Sol VTEC, 1999-2000 Civic Si and 1998-2001 CR-V EX and LX 2.0L.
ACT rates it at 280 ft-lb at the crank, 52 percent more than the factory clutch.
It can be, but ACT describes the engagement as aggressive and recommends it for high horsepower street or race use. For a daily driver, the AI4-SPSS with the organic disc is smoother.
ACT lists light to moderate pedal effort. The Sport plate is the mildest of its performance plates, below Heavy Duty and Xtreme.
No. Resurface the stock one or buy one separately. ACT offers the 600105 Prolite and 600110 Streetlite XACT flywheels for this application.
ACT says its race discs usually need only a few hard slips to lap in the surfaces. Avoid overheating the clutch while bedding it.
