The quest for the "ultimate" in replacement clutches has brought UUC to
abandoning all commonly-available aftermarket brands, and instead
focussing on a development relationship with the best street and race
clutch manufacturer available.
The result is a level of quality and performance beyond anything else
available.
Stage2 Segmented Kevlar is ideal for street use and track use in cars that make above-average power thanks to supercharging or low-boost turbocharging.
This clutch's engagement characteristics and pedal effort are similar to the BMW OEM clutch, very smooth and easy to modulate.
Big news for 330 owners!
Many E46 owners have experienced mushy clutch feel, inconsistent
engagement, and premature wear of the clutch in their
manual-transmission cars. The reason is quite simple - the original BMW
(LUK-manufactured) clutch in the E46 has a new "SAC" (Self Adjusting
Clutch) design. This new mechanism built into the pressure plate is
supposed to keep the clutch pedal engagement point the same as the
clutch wears... but in all reality, it's a case of "an answer to a
question that nobody was asking." They have added a layer of complexity
and feedback isolation, filling a need that didn't need filling - it is
not too often that anybody notices that their clutch engagement point
as moved 1/2" over 50K miles.
The SAC mechanism itself causes problems; it over- or under-adjusts the
pressure plate and therefore causes the clutch to slip or burn out
prematurely. They are also known to shift, causing the pressure plate
release fingers to slip off the plate, keeping 1/3 of the pressure
plate engaged at all times. Bottom line is that the only fix is a
complete clutch job, and your dealer is likely to claim "driver abuse".
We have seen it happen too many times.
The SAC mechanism may not give a clean release like a standard clutch.
Instead of just two sets of springs, there is an adjuster mechanism
that makes engagement feel mushy or slow.
The UUC clutch eliminates the SAC mechanism and restores traditional
clutch feel with predictable and crisp engagement.
This clutch has several advantages for
the enthusiast driver:
- Direct-fit clutch does not require special flywheel.
- Greater clamping force than standard 3-series clutch.
- Elimination of the SAC mechanism.
