The Stage 1 uses the Power Plus pressure plate with a custom heavy-duty steel back organic friction disc for 70% more holding capacity over a stock clutch assembly. It is specifically designed for extended wear and additional clamping force needed for heavy-duty street use, autocross, and fairly stock street cars participating in open track/driving schools. It feels very much like a stock clutch, with only slightly increased pedal pressure. Expect a bit longer life than stock, and normal clutch feel during engagement and disengagement for a very smooth operation.

The Stage 2 uses the Power Plus pressure plate and a steel backed Kevlar disc for 70% more holding capacity over a stock clutch assembly. This clutch is designed for the medium-modified street car or one that regularly autocrosses /sees driving school/track days. The Stage 2 offers similar torque holding capacity to the Stage 1, however, it's life expectancy is increased 2-3 times with the Kevlar disc. The Kevlar friction material is non-abrasive and doesn't score the mating surfaces. It features only slightly increased pedal pressure, significantly longer life than stock, and normal clutch feel during engagement and disengagement for the smoothest operation of any stage we offer. The downside to this clutch is it must be broken in properly. An improper break-in of a Kevlar clutch will great reduce longevity and clutch hold.

The Stage 3 uses the Power Plus pressure plate with a steel back segmented Kevlar disc for 110% more holding capacity over a stock clutch assembly. This clutch is designed for the highly tuned street cars seeing numerous autocrosses and driving school/track days per year. The Stage 3 features slightly increased pedal pressure, long life disc, and positive engagement and will hold a great deal more power than a standard clutch.
Engagement is slightly more firm than the Stage 2. The downside to a Kevlar clutch is it must be broken in properly. An improper break in of a Kevlar clutch will great reduce longevity and clutch hold.

The Stage 4 uses the Power Plus pressure plate with a custom, extremely durable, ceramic disc for 170% more holding capacity over a stock clutch assembly. This is a great hard street use, forced induction type clutch with a 6-puck configuration. The 4-puck being the more aggressive setup, make a ideal choice for devoted track clutch for drivers who are rulebook limited to stock diameter clutch kit.The disc incorporates a solid hub to work in conjunction with the stock dual mass flywheel design for smooth engagement*, or can be used with a single mass but will make some rattle noise at idle. This disc is designed for long life, outstanding holding capacity, and rapid heat dissipation. Please note: Due to the solid (no Marcel) friction rivet design, the Stage 4 disc engages quickly than stages 1-3 (4-puck engages even harder) and can cause increased wear on the drivetrain if it sees abusive use. With a bit of a learning curve, a 6-puck can be street driven without issue.
These puck configurations may chatter slightly when engaging first and reverse. To help alleviate this problem, ClutchMasters only use premium ceramic friction material.
Ceramic breaks in easy, especially compared to Kevlar making it a great choice for the devoted track car that does not have the ability for an extended break in period.