The STR-40 is the most versatile caliper in the StopTech lineup. Widely used in StopTech Big Brake Kit offerings, the STR-40’s versatility is optimized through an extensive selection of piston size combinations to provide precise force output for each application. Internal cross-over passages and dust boots further extend the versatility of the STR-40 into uses such as the popular STOR-40 Off-Road caliper.

  • MIL-spec hard anodizing on calipers resists color change or fading
  • Forged and weight-optimized, up to 20 percent lighter than standard calipers
  • Stiffest calipers available with patented strengthening bridge for improved pedal feel and modulation
  • Eliminates pad taper wear and provides consistent, confidence-inspiring performance
  • Calipers and piston sizing specifically matched to each application


Classification

Number of Pistons
4
Weight
7.2 lbs
Max Rotor Outer Diameter
355mm
Rotor Thickness
10mm; 28mm; 32mm; 35mm
Piston Range
26-44mm

Mounting

Radial/Axial
Radial
Mount Spacing
130mm
Hole Size
12.2mm
Offset from Centerline
44.0mm; 53.0mm; 55.0mm; 56.5mm

Compatible Pad Shapes

Pad Shape
Pad Thickness
16.5mm
Pad Volume
70.3cm3
Pad Annulus
50.5mm
Pad Drawing
Notes