Accossato front brake pads AGPA109ST, sintered (st) compound, for Kawasaki ZX-4 RR
02 · Data & docs

The facts.

Technical data
Part numberAGPA109ST
CompoundSintered (ST)
Dimensions71.6 × 50.3 × 7.5 mm
MaterialSintered copper friction material with abrasives and carbon
Friction coefficient0.46 average, 0.52 maximum (dyno test to JASO standard)
Density4.50 g/cm³ at 20 °C (+0.10 / −0.05)
Hardness90 HRR (± 10 HRR, Rockwell HRR scale)
Temperature resistance450 °C working, 600 °C maximum peak
Minimum shear strength30 kg/cm²
Contents2 brake pads, one set for one caliper
DescriptionThe whole story▼

The Kawasaki ZX-4 RR, sold from 2023 to 2026, is the better-equipped version of Kawasaki's four-cylinder 400 sports bike. Although it is built with the track in mind, many owners ride it mostly on country roads, from the first mild weekend in March to the last dry day in November. Accossato's AGPA109 front pad in the Sintered mixture is meant for that long season, when the air is cool and the tarmac can still be damp in the shade.

Key Features

  • Front pads AGPA109 for the Kawasaki ZX-4 RR, 2023 to 2026
  • Sintered mixture, SKU AGPA109ST
  • Accossato cites high, constant grip at low and high temperatures
  • Keeps its bite on damp tarmac
  • No warm-up needed for the first stop
  • Suits a long riding season
  • EV1, EV2 and ZXC are also made on this plate
  • No ABE on file; for track use

Construction and Material Quality

Accossato's description of the Sintered compound focuses on consistency: the grip level stays high and barely changes with temperature, and the pad still grips when the disc is wet. On a ZX-4 RR ridden in spring and autumn, that removes the need to think about whether the brakes are warm. The company further says its pads wear slowly, hold back heat to resist fade and brake strongly.

Spring and Autumn Riding

Early and late in the year, a sports bike like the ZX-4 RR spends many miles on roads that are cold, patchy and occasionally wet. Leaves collect in corners, the shade keeps some bends damp and the tyres take longer to warm. A front pad that does not need heat to work adds a margin of safety in exactly these conditions. The Sintered set provides the same lever response on the first cold bend as on a sunny afternoon.

After the winter break, check the pads and discs before the first ride. Moisture in the fluid lowers its boiling point, so change the fluid if it looks dark or has not been replaced for a long time.

Keeping the Front Brake Clean

Wash the calipers gently with water after wet rides and let them dry. Avoid high-pressure cleaners close to the seals and never spray chain lube or polish near the discs.

Fitment and Compatibility

Accossato lists AGPA109 for the front of the ZX-4 RR from 2023 to 2026. The Accossato disc for this bike is DKS080. No separate Accossato rear pad is catalogued for the ZX-4 RR in this listing. A box covers one caliper, so check how many your bike carries.

Road Approval

We hold no ABE or German approval documents for AGPA109ST. It is supplied for racing and circuit use.

Scope of Delivery

Two Sintered front pads, one caliper set.

Specifications

  • Part number: AGPA109ST
  • Compound: Sintered (ST)
  • Dimensions: 71.6 × 50.3 × 7.5 mm
  • Material: Sintered copper friction material with abrasives and carbon
  • Friction coefficient: 0.46 average, 0.52 maximum (dyno test to JASO standard)
  • Density: 4.50 g/cm³ at 20 °C (+0.10 / −0.05)
  • Hardness: 90 HRR (± 10 HRR, Rockwell HRR scale)
  • Temperature resistance: 450 °C working, 600 °C maximum peak
  • Minimum shear strength: 30 kg/cm²
  • Contents: 2 brake pads, one set for one caliper
What's includedEverything in the box▼
  • 1x Accossato brake pad set (2 pads)
DownloadsData sheet▼
FitmentWhich bikes this fits▼
  • Kawasaki ZX-4 RR (2023–2026)
  • Kawasaki NINJA 1000 SX (2020–2024)
  • Kawasaki VERSYS 1000 (2019–2024)
  • Kawasaki VERSYS 1000 S (2021–2024)
  • Kawasaki VERSYS 1000 SE (2019–2024)
  • Kawasaki Z1000 (2010–2019)
  • Kawasaki Z1000 SE (2014–2016)
  • Kawasaki Z1000SX (2011–2023)
  • Kawasaki Z900RS (2018–2026)
  • Kawasaki Z900RS CAFE (2018–2021)
  • Kawasaki ZX-10 R (2008–2015)
  • Kawasaki ZX-25R (2020–2023)
  • Kawasaki ZX-4R 400 (2023–2026)
  • Kawasaki ZX1000 Ninja H2 (2018–2026)
  • Suzuki DL1000 V-STROM (2014–2019)
  • Suzuki DL1050 V-STROM (2020–2026)
  • Suzuki GSX-S950 (2022–2026)
  • Suzuki M1800R INTRUDER (2006–2016)
07 · Support

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08 · Paddock

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