Confident, consistent stopping for flat-bar road bikes. The SRAM S-300 is a hydraulic disc brake built around SRAM's DirectLink lever and a flat-mount caliper, delivering a solid lever feel and a predictable bite point so you can brake later and with more control. This is the front caliper half-system with a right-hand lever and a 950 mm hose sized for the shorter front run.

Highlights

  • Hydraulic disc brake for flat-bar road bikes
  • Flat-mount caliper with 20 mm offset
  • DirectLink lever for a solid, positive feel
  • Stamped aluminium lever blade with tooled reach adjust
  • Steel-backed organic brake pads fitted
  • 950 mm hydraulic hose suited to the front caliper

Smooth, repeatable power

SRAM's timing-port closure system pairs durable seals with an ultra-smooth cylinder bore for dependable power and a consistent bite point lap after lap. The DirectLink lever translates effort into braking force without vagueness, giving you precise modulation on descents and in traffic.

Set up to fit your hands

The stamped aluminium lever blade keeps weight down, while tooled reach adjustment lets you dial the blade closer for smaller hands or comfort. Steel-backed organic pads come installed, and the brake runs on DOT brake fluid.

Compatibility & fit

Designed for flat-mount road frames and forks using a 20 mm caliper offset. Supplied as a complete lever-and-caliper assembly with hose and pads; the rotor is sold separately, so choose a SRAM-compatible disc rotor in your preferred size and mount standard. As set up here, the right-hand lever operates this front caliper, matching the common Australian convention of right lever to front brake.

SRAM warrants this product to be free from defects in materials and workmanship for two years from the original date of purchase, in line with SRAM's standard warranty terms and your rights under Australian Consumer Law. The warranty covers manufacturing defects and does not cover normal wear (including brake pads), improper installation, crash damage, or modification.

For any warranty claim or support, please return the item to Tune Cycles and we will assist you and manage the process on your behalf.

  • Front caliper with right-hand lever assembly
  • Hydraulic disc brake for flat-bar road use
  • Flat-mount caliper, 20 mm offset
  • SRAM DirectLink lever for a solid, positive feel
  • Stamped aluminium lever blade
  • Tooled reach adjustment
  • Steel-backed organic brake pads (fitted)
  • 950 mm hydraulic hose
  • DOT hydraulic brake fluid
  • Rotor sold separately
BrandSRAM
ModelS-300 (DB-S300-A1)
TypeHydraulic disc brake
PositionFront caliper
Lever sideRight
Caliper mountFlat mount, 20 mm offset
LeverDirectLink, stamped aluminium blade
Reach adjustTooled
Lever pivotBushing
Brake padsSteel-backed organic
Hydraulic fluidDOT
Hose length950 mm
ApplicationRoad (flat bar)
ColourBlack
RotorSold separately
SKU PSI-SR005018227000
Model # 005.018.227.000
Barcode # 710845886874
Brand SRAM