Piston Spring - 300-12995

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Piston Spring
Prod #: 300-12995
Price: $3.39

Wilwood Piston Spring Wilwood Piston Spring Zoom Image

Caliper Replacement Parts

Caliper Piston Knock Back Springs. Used in low brake pedal situations due to piston knock back caused by vibration, mount or spindle flex. Part # 300-12995 (.72” diameter) is used with all Wilwood Thermlock pistons and Wilwood’s conventional stainless steel pistons from 1.00” to 1.38” diameter. Spring use in stainless pistons require a relief cut not present in earlier versions of pistons. Please check your application before ordering.

Piston Spring Description
Type Piston Spring
Material Stainless
Weight (oz)
Thread Size
Thread Size
Pin Size
Cap Thread
UPC Number
UPC 889545025491
Desc 1 SPRING,TAPERED,PISTON,.37/.72 ODx1.00
Cautionary Info
Cautionary Info  
Product Data Sheets
Data Sheet

Piston Spring Dimensions

 Drawing Drawing
Pedal Set
Pedal Type
Pedal Direction
Pedal Ratio
Pedal Length (in)
Pivot Length (in)
P Pin Dia
C Pin Dia
B Pin Dia
Parking Brake Cable
Length (in)
Width (in)
Slot Width (in)
B Pin Dia

Additional Notes

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Version: 3.05 June 23, 2023