ACT 1990 Eagle Talon XT/Race Sprung 6 Pad Clutch Kit

ACT MB1-XTG6 is the clutch most built 4G63 turbo DSMs end up with once an organic street disc stops living through launches. It combines ACT's Xtreme pressure plate with a sprung six-pad ceramic disc, and it fits the 1990-1998 Eagle Talon TSi, the 1990-1999 Mitsubishi Eclipse GST and GSX, and the 1990-1994 Plymouth Laser RS. If your Talon or Eclipse spins the tach at the top of second on boost, smells cooked after a few passes at the strip, or eats a fresh street clutch in one season, this is the kit sized for that kind of use.

What MB1-XTG6 does in a 4G63 turbo DSM

The Xtreme plate uses a stiffer diaphragm than ACT's Heavy Duty plate, raising clamp load and cutting deflection so the plate does not back off at high rpm. The disc puts that clamp load onto six ceramic pads instead of a full organic face. Ceramic tolerates much more heat, which is what kills street discs on all-wheel-drive GSX and TSi cars that launch hard and can not spin the tires to relieve the drivetrain. The spring center keeps torsional shock from the four-cylinder from going straight into the transaxle, which a rigid hub would not do.

ACT rates MB1-XTG6 at 530 ft-lb at the crank, 109 percent over the factory clutch, on a 224 mm (8.8 in) disc with a 0.875 in input spline. Kit contents are the MB010X Xtreme pressure plate, the 6224704 six-pad sprung race disc, the AT20 alignment tool and the RB210 release bearing. ACT describes the feel as moderate to heavy pedal effort with aggressive engagement and OE to mild gear rattle, and recommends it for high horsepower street or race use. That puts it one step below the MaXX version, with a pedal most owners can still drive in traffic.

Symptoms this kit is built for

• Revs flaring at peak boost with a Heavy Duty or Xtreme organic disc already installed
• Disc coming out glazed or with heat cracks after drag launches
• Soft, slipping engagement after back-to-back runs that recovers once the car cools
• A takeoff shudder from a flywheel with hot spots
• A bigger turbo, injectors and tune that have pushed power past what a street disc holds

How to confirm before you buy

DSMs are known for release-side problems, so rule those out before blaming the disc. Bleed the hydraulics, check the clutch fork and the pivot ball for wear, and make sure the pedal returns all the way so the plate is fully clamped. Look for oil at the bellhousing from the rear main seal. Then hold a low-rpm, full-throttle pull in third and watch whether the tach rises faster than road speed. Our slipping diagnosis guide walks through that test, and shift flare vs. slip helps you tell a real slip from a flare during a shift.

Fitment

Our listing is titled for the 1990 Eagle Talon. ACT's application for MB1-XTG6 covers the 1990-1998 Talon TSi, the 1990-1999 Eclipse GST and GSX including the 1996-1999 Spyder GST, the 1990-1994 Laser RS and the 1991-1992 Galant VR-4. ACT also lists a long run of other Mitsubishi and Chrysler cars, among them the 1991-1999 3000GT and 1991-1996 Stealth non-turbo models, the 2000-2005 Eclipse 2.4L and the 2003-2004 Sebring 2.4L. First-generation and second-generation DSMs use different flywheels, and the 1990-1992 cars are often swapped, so the flywheel bolted to your crank decides what fits. Send us your year, VIN and engine if you are unsure. Browse more parts in our rebuild kits section.

Install notes

• Resurface or replace the flywheel so the six pads seat flat. A worn face will cause chatter with any puck disc.
• Replace a worn pivot ball, fork or fork bushing while the transaxle is out; the heavier pedal will expose any weak link.
• Center the 6224704 disc with the AT20 tool and tighten the MB010X cover bolts in steps in a star pattern.
• Fit the supplied RB210 release bearing rather than reusing the old one.
• Bleed the hydraulics with the fluid shown on the reservoir cap.
• ACT says race discs only need a few hard slips to lap in the surfaces. Avoid overheating the clutch while you do it.

If you need still more clamp, the MB1-XXG6 MaXX kit uses the same disc with ACT's strongest plate. If the car is mostly street driven, the MB1-XTSS keeps the Xtreme plate with a smoother organic disc. The MB010X pressure plate in this kit is also sold alone.

Does MB1-XTG6 fit a second-gen Eclipse GSX or Talon TSi AWD?

Yes. ACT lists the 1990-1999 Eclipse GST and GSX and 1990-1998 Talon TSi with the 2.0L turbo, which covers both first- and second-generation cars. Make sure your flywheel matches your engine.

How much torque does it hold?

ACT rates MB1-XTG6 at 530 ft-lb at the crank, 109 percent over the factory clutch.

Is a flywheel included?

No. The kit contains the MB010X pressure plate, 6224704 disc, AT20 alignment tool and RB210 release bearing. Resurface your flywheel or buy one that matches your engine.

How does it compare with MB1-XXG6?

Both use the 6224704 six-pad sprung disc. MB1-XXG6 uses the MaXX Xtreme plate rated at 570 ft-lb with a heavy to very heavy pedal; MB1-XTG6 uses the Xtreme plate at 530 ft-lb with a moderate to heavy pedal.

Can I drive it every day?

Many owners do, but engagement is aggressive and a six-pad disc is less forgiving pulling away than an organic one. ACT recommends it for high horsepower street or race use.

Is there a break-in period?

ACT says race discs usually need only a few hard slips to lap in the surfaces, and warns not to overheat the clutch during break-in.

• How to Diagnose Transmission Slipping
• Shift Flare vs. Slip: How to Tell Them Apart
• Automatic vs. Manual Transmission Repair Cost