The CM FX500 (Stage 5) clutch is ZZP's recommendation for high HP Ecotecs. 

Clutch selection is hard, especially on the Delta chassis Ecotec cars. We have pushed, abused, and used many combinations over the years. To date the Clutch Masters clutches have been the most reliable at handling torque. 

Estimated Torque Ratings:

• FX300 - 470 lbs.ft
• FX400 - 550 lbs.ft
• FX500 - 550 lbs.ft

Fits the following models with the F35 transmission:

• '05-10 Cobalt 2.0
• '04-07 Saturn Ion 2.0
• '08+ HHR 2.0

Clutchmasters 04916-HDTZ-H FX300 Stage 3 Clutch Kit
Heavy duty pressure plate. Segmented Kevlar disc for exceptional holding power & long life.
Holding Capacity : 110% increase
Engagement : Positive

The perfect clutch for aggressive drivers that still desire smooth engagement. Our FX300 clutches utilize a segmented Kevlar disc. This will provide more holding power than FX100 or FX200 yet it still offers exceptionally smooth driveability and long life. Combined with our aluminum flywheel this an excellent performance upgrade.

The FX300 System uses the Power Plus I Pressure Plate with a Steel Back Segmented Kevlar disc. This clutch is designed for the ultimate street enthusiast or weekend racer running a normally aspirated car equipped with cylinder head work and/or hotter cam(s) or with medium-boost turbo or super-charger or up to 100hp NO2. The FX300 features only slightly increased pedal pressure long life disc and positive engagement.

FX300 (Stage III)
-Heavy-duty street & racing system
-Holding capacity 110% over stock
-Heavy-Duty reinforced pressure plate
-Hi-Leverage™ pressure ring design
-Sprung hub/cushioned disc
-Steel backed Segmented Carbon/Kevlar

Clutchmasters 04916-HDC6-H FX400 Stage 4 Clutch Kit (6 Puck)

Heavy duty pressure plate. 6 PUCK ceramic sprung disc for quick engagement and tremendous holding power.
Holding Capacity : 170% increase
Engagement : Aggressive

The clutch for aggressive drivers. This is the perfect road-racing application. FX400 utilizes a 6 PUCK ceramic sprung disc complemented by a bulletproof hub assembly. It is designed for cars with significant power upgrades. Engagement is hard and quick.

The FX400 System uses the Power Plus I Pressure Plate with a custom extremely durable Sprung Ceramic disc. This is the ultimate extreme duty street and/or road/drag racing system. The sprung hub design allows for moderate dampening in high-torque applications rendering it much more streetable than solid or rigid designs. This disc is designed for long life outstanding holding capacity and rapid heat dissipation.

Warning: Due to the solid (no Marcel) friction rivet design the FX400 disc engages very quickly and may chatter slightly in first and reverse. To help alleviate this problem we only use premium ceramic friction material.

FX400 (Stage IV)
-Ultra heavy-duty street &racing system
-Holding capacity 170% over stock
-Heavy-Duty reinforced pressure plate
-Hi-Leverage™ pressure ring design
-Sprung hub/4-button
-Ceramic friction material
-SFI Approved on most race applications.

Clutchmasters FX500 Stage 5 Clutch Kit (6 Puck)

This is a ZZP clutch combo that is known to shift faster due to not coming with a sprung hub, results are faster shifting at high RPM, the downsides are slightly more grabby off the line.  The holding capacity is the same as the FX400, it is just a more race oriented combo.

All Clutch Masters Stage 3, 4, & 5 clutch kits come complete with:

• Pressure Plate
• Clutch Disc
• Throw-out Bearing
• Alignment Tool

Clutchmasters04900-TD7R-AH Stage 6.5 Clutch Kit (Twin Disc)
Clutch Masters is proud to introduce the finest and most economical multi-plate clutch systems available for today’s high performance vehicles, the 725 Series. Clutch Masters Twin Disc systems are pure racing technology that also works well in high performance street applications. They are designed to hold tremendous horsepower and torque ratings, while retaining a very smooth operation. By slightly increasing the clamping force of the pressure plate and adding to the square inches of usable disc area, CM Twin Discs significantly increase clamping values with only a 25-50% increase in pedal pressure depending on the application. The cover assembly is machined from billet aluminum with 25% more tensile strength than the competition’s cast unit. The flywheel is machined from billet 6061-T6 aluminum to meet SFI spec 1.2 for competition in NHRA, NDRA, IDRC, IHRA, SCCA and NASA. Each aluminum flywheel includes a replaceable heat shield. Steel flywheels are also available on select applications.

725 SERIES – (7.25” Twin Disc)
The 725 series is a smaller diameter assembly, which creates less rotating mass and offering quicker, and smoother shifting with much better throttle response.
“Street and Race” (TD6.5) – 1 sprung ceramic disc, and 1 fiber tuff rigid disc 

• Components can be purchased separately for economical repair.
• Positive release for ease of high RPM staging and shifting.
• Most have experienced better 4/10's times and averaged hundreds of passes without complications or repair

All twin disc systems include:

• Cover Assembly with attached Diaphragm
• Pressure Plate Ring
• Two Discs
• One Mid Plate
• Billet Aluminum Flywheel*
• Release Bearing
• Throw Out Bearing
• Pressure Plate Bolts

Does not fit the 2.2 or 2.4 without a custom flywheel that we do offer, contact us for more details.

We highly recommend measuring the actual finger height of the assembled stock clutch versus the clutch masters, if the finger height is lower with the Clutch Master Clutch, then we recommend also purchasing our Throw Out Bearing Spacer. See video below on how to measure. 

Stage 3, Stage 4, and Stage 5 clutch assemblies include the upgraded LSJ throw out bearing.