The throwout bearing which is provided has clips to hold it in place.
The chrome-moly steel flywheel is 11.3 lbs vs the 19 lbs stock part. This is decently light. With Subarus, too light of a flywheel can trigger misfire check engine lights so this weight is a good compromise.
Although they look bolted on the lugs are CNC machined into the flywheel for strength.
The flywheel has lightning holes machined into the center and on its outer perimeter for less inertia.
With nearly double the torque capacity of the OEM clutch and its smooth and quiet action with a light pedal, the XClutch is going to be a winner for our Project STI! Stay tuned for installation and driving impressions once we start putting it all together.