For more information on Hispec Calipers, please call 01322 286850.

Extreme 4 range

Typical application:

● Matching rear caliper for extreme 8


● Classic tried and tested design allows for confident braking

● Billet aluminium body (6082 T6)

● New curved design allows for maximum wheel clearance

● Low maintenance, high performance calipers

● Billet aluminium pistons (6082 T6)

Technical specifications:

Piston size (surface area)

option 8  ¦ 4x 34.6mm (37.61cm2)







Piston material

Hard anodised billet aluminium (6082 T6)

Caliper colour

Powdercoat (Black¦ Blue¦ Red¦ Silver¦ Yellow)

anodised (Black¦ Silver)

Body material

6082 T6 billet aluminium

Weight no pads


Hydraulic Thread

 M10 x 1.0

Mounting offset (to rear of disc)


To suit disc diameter (Width)

280mm - 325mm  (10mm - 35mm)


Mount type

Piston depth

Part number

Anodised price exc. VAT

Powdercoated price exc. VAT

Extreme 4 radial 310

Radial 152.4mm ctrs.


4PX                  310



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Pad specifications:

(Pad 2)

Pad type

Billet 310

Pad surface area

43.67 cm2

Pad thickness

10.6mm material /   16.1mm total

Pad volume

46.29 cm3