Brake Pistons by JMB Services

Custom Brake Pistons for Classic Heritage Aston Martins


All of our custom brake pistons for Aston Martins are manufactured from EN58 Stainless Steel to eliminate corrosion associated with standard brake pistons. Due to the nature of stainless steel, the heat transfer to the brake fluid is reduced compared to that of the standard brake piston.

To fit DB2/4 MKIII, DB4, DB5, DB6, DBS, V8 & 1994 Vantage Coupe Aston Martins.

Please refer to each product description as to whether it is castellated or non-castellated.
Non-castellated brake pistons are machined as original in appearance & fitment.

The castellated design creates air turbulence in the body of the piston to prevent the transfer of heat to the brake fluid, even further combined with the stainless steel material, virtually eliminating brake fade. All castellated brake pistons do not use dust covers and are suitable for racing applications.



MODEL: Late DB4, DB5, DB6, DBS, AM Vantage 6 cyl

  • FITMENT: Front Axle Set (Caliper 17/3P)
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1001
  • SPECIFICATIONS: 21/4”(57.16mm) x 11/8”(28.56mm) # x2 (6432 5438) + 119/32”(40.48mm) x 11/8”(28.56mm) # x4 (6432 5809)

MODEL: Late DB4, DB5, DB6, DBS, AM Vantage 6 cyl & DBSV8, AMV* to 1977 Chassis 11700?

  • FITMENT: Rear Axle Set (Caliper 12/3HP)
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1002
  • SPECIFICATIONS: 111/16”(42.86mm) x 11/8”(28.56mm) # x2 (6432 5436) + 13/16”(30.15mm) x 11/8”(28.56mm) # x4 (6432 5863)

MODEL: DB4 GT, DB2/4 MKIII (same as V8 large piston)

  • FITMENT: Front Axle Set (Caliper type split ‘C’)
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1003
  • SPECIFICATIONS: 23/8”(60.33mm) x 15/16”(33.34mm) # x4 (6432 0163)

MODEL: DB4 GT, DB2/4 MKIII (same as V8 large piston)

  • FITMENT: Front Axle Set (Caliper type split ‘C’)
  • TYPE: Castellated
  • JMB PART NO: BP-1004
  • SPECIFICATIONS: 23/8”(60.33mm) x 15/16”(33.34mm) # x4

MODEL: DBSV8, AM V8

  • FITMENT: Front Axle Set
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1005
  • SPECIFICATIONS: 23/8”(60.33mm) x 15/16”(33.34mm) # x2 (6432 0163) + 111/16”(42.86mm) x 15/16”(33.34mm) # x4 (6432 5111)

MODEL: AM V8 from 1977

  • FITMENT: Rear Axle Set
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1006
  • SPECIFICATIONS: 111/16”(42.86mm) x 11/8”(28.56) # x4 (6432 1392)

MODEL: AM V8 from 1977

  • FITMENT: Rear Axle Set
  • TYPE: Castellated
  • JMB PART NO: BP-1007
  • SPECIFICATIONS: 111/16”(42.86mm) x 11/8”(28.56) # x4

MODEL: 1994 Vantage Coupé

  • FITMENT: Front Axle Set
  • TYPE: Castellated
  • JMB PART NO: BP-1008
  • SPECIFICATIONS: 1.625” x 1.375” # x4 + 1.750” x 1.375” # x4

MODEL: V8 Lagonda Wedge Shaped 1976 – 1990 & DB7i6

  • FITMENT: Front Caliper Set
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1009
  • SPECIFICATIONS: 48mm x 29mm (96.14762) # x4 (x2 Sets Required Per Axle)

MODEL: V8 Lagonda Wedge Shaped 1976 – 1990 & DB7i6

  • FITMENT: Rear Axle Set
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1010
  • SPECIFICATIONS: 48mm x 29mm (96.14762) # x4

MODEL: DB4 GT

  • FITMENT: Rear Axle Set
  • TYPE: Non-Castellated
  • JMB PART NO: BP-1011
  • SPECIFICATIONS: 111/16”(42.86mm) x 11/8”(28.56mm) # x4 (6432 5436)

MODEL: V8

  • FITMENT: Front Axle Set
  • TYPE: Castellated
  • JMB PART NO: BP-1012
  • SPECIFICATIONS: TBA