Wilwood 200-6633 is a stainless steel cup caliper piston measuring 2.75 in in outside diameter and 1.680 in long. It is formed by a proprietary stamping operation and is designed to prevent oil canning. The thin wall profile has low conduction to limit heat transfer into the caliper. It is made from a high strength proprietary alloy with a bright machined finish.
Notes:
- Pistons are matched by outside diameter and length. Confirm both against the caliper's existing pistons before ordering.
Specifications:
- Brand: Wilwood
- Part Number: 200-6633
- Description: Cup Stainless
- Piston Type: Cup
- Material: Stainless
- Outside Diameter (in): 2.75
- Length (in): 1.680
FAQ
What size is Wilwood piston 200-6633?
It measures 2.75 in in outside diameter and 1.680 in long.
Which calipers does this piston fit?
Fitment is by piston size. Confirm that the caliper's existing pistons measure 2.75 in in diameter and 1.680 in long before ordering.
How is the piston made?
It is a stamped stainless steel cup piston made from a high strength proprietary alloy with a bright machined finish.
What is the advantage of a thin wall cup piston?
The thin wall profile has low conduction, which limits heat transfer from the pads into the caliper, and the design is made to prevent oil canning.

