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GP 310 4 Piston Motorcycle Rear Brake Caliper 1984-up Harley Davidson
InfoVehicle Info Needed
WILWOODPART NUMBER: 950-120-7741-P

GP 310 4 Piston Motorcycle Rear Brake Caliper 1984-up Harley Davidson

$39837
ShippingShips on Sep 04, 2026
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GP 310 Rear Disc Brake Caliper
  • 0.25'' Brake Disc Width
    • GP 310 4 Piston Motorcycle Rear Brake Caliper
    • 1984-up Harley Davidson
    • 1.25'' / 1.25'' Piston Bores
    • 11.5'' Rotor Dia.
    • 0.25'' Disc Width
    • Left Hand, Standard 3.50'' Mount Spacing
    • Polished Finish


      Tech Note: Use with Dyna 'Bottom' Bracket p/n 950-250-8252 (Chrome) or p/n 950-250-8252-P (Polished).

      Vehicle Applications
      Driving EnviromentVehicle Sub-TypesApplication Duty
      Motorcycle Heavy Duty
      PowersportsATV, SnowmobilesMedium Duty


      Product Specifications
      Rotor Compatibility
      Rotor Width:0.25'
      Maximum Rotor Width:0.25'
      Minimum Rotor Width:0.18'
      Maximum Rotor Diameter:11.5'
      Minimum Rotor Diameter:9.0'
      Brake Pad Specifications
      Brake Pad Type 1:6208
      Brake Pad Type 2:N/A
      Brake Pad Type 3:N/A
      Total Pad Area (in/sq):3.65'
      Total Pad Volume (in/sq):0.63'
      Piston Specifications
      Piston 1 Bore:1.25'
      Piston 2 Bore:1.25'
      Piston 3 Bore:N/A
      Piston 4 Bore:N/A
      Total Piston Area (in/sq):2.46'
      Mounting Specifications
      Mount Type:Lug
      Mount Side:Left Hand, Standard 3.50' Mount Spacing
      Mount Center:3.50'
      Mount Hole Size:0.39'
      Mount Height:1.55'
    Part TypeDisc Brake Caliper
    BrandWILWOOD
    Package Height3.4
    Package Width4.5
    Package Length6.9
    Weight2.2 PG
    Part CategoryPerformance Parts
    Caliper Piston QuantityFour
    Caliper MaterialAluminum
    Brake Pads IncludedYes
    QuantitySold individually
    Piston Diameter1.25 in (31.8 mm)
    Rotor Thickness0.25 in (6.4 mm)
    Caliper SeriesGP 310
    Caliper LogoWilwood
    Parking Brake ProvisionNo
    Fittings IncludedNo
    Brackets IncludedNo
    Part FitmentSemi Universal
    Caliper FinishPolished
    Vendor Part Number120-7741-P
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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