Disc Brake Calipers



I was looking at the specifications on different brake calipers for some projects, and it occurred to me that the data would be of interest to others.

As far as I could tell these were total weights, including pads. Weights were taken from the catalogs indicated, except the Nissin caliper which was weighed by a friend.

If anyone has dimensions for a brake I've not listed send it to me and I'll add that to the list.

Price comparisons are up to you and your FLD (friendly local dealer).

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Brake Caliper Comparison Data

Performance Machine (1993 catalog)

# Pistons          Piston OD (MM)                        Weight (oz)          Part no/description
2                              31.7                              13	         125X2
4                              31.7                              24              125X4R
4                              28.5/35                           31              137X4      
6                              28.5/31.7/35                      47              137X6
2                              41.2                              40              162X2

Grimeca  (96 Storz catalog)
2                              30                                15              1000T
2                              41                                35              1025
2                              41                                36              1050(LOCKHEED)
4                              ?/?                               32              70782
6                              25                                36              70911

ISR (95 Slater Bros catalog - weight converted from grams)
4                              34                                31.4            22-025-OA
4                              34                                32.1            22-025-OG
2                              34                                18.7            22-027-OA
2                              43                                31              22-030-OE
6                              30                                28.9            22-032-OA
6                              25                                20.6            22-034-OA
2                              25                                 8.1            22-036-OA (rear)


NISSIN -  early 1990s GSXR
4		               ?		                 41.8		 ?

BREMBO (Slater Bros - Weights from 1984 catalog - Gold line)
2                              32                                14              F04
2                              32                                19              F05
2                              38                                38              F08
2                              48                                48              F09
4                              32                                28              MK1GP - QD
4                              30/34                             ?               MK2/3GP

From the 4 Oct 00 issue of MCN(UK):

Pretech 6 piston - 235 ea, 633g
Nissin 6 piston - 175 ea, 780g
Braking rim disk caliper - 1200 including rim and rotors, 673g/caliper
PFM 6 piston - 999 for dual discs/calipers/hoses, 640g
Brembo P4 - 120, no weight
AP Racing radial mount monobloc 6 piston - 879,  652g
Harrison 6 piston - 245.60. 564g
Harris GP Rear 2 piston - 128, 264g

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