Accossato front brake pads AGPA51 for Yamaha WR450F (2003-2015)
02 · Data & docs

The facts.

Technical data
Part numberAGPA51ST
CompoundSintered (ST)
Dimensions94 × 34.2 × 7.2 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▼

Winter trail days on an earlier Yamaha WR450F mean cold hands, wet leaves and stones glistening with rain. For the WR450F of 2003 to 2015, Accossato lists its AGPA51 front pad, and this listing covers the Sintered (ST) compound. It is designed for riders who keep their big enduro bike running through the colder months and want a front brake that behaves predictably in the wet and cold rather than one tuned for dry summer racing.

Key Features

  • AGPA51 front pad, Sintered (ST) compound
  • Listed for the WR450F, 2003 to 2015
  • Stable grip across the temperature range
  • Good wet performance, per Accossato
  • Suited to winter trail riding
  • One set per box, front caliper
  • OR, STMX and EV1 also available

Construction and Material Quality

What Accossato highlights about ST is that its grip stays strong and even from a cold start to a hot, hard-used brake, and that it keeps a firm hold in the rain. On winter trails, where the front disc is often both cold and wet, that is the combination that matters.

Cold Months on a Big Enduro

On a frosty morning, the front brake of a WR450F must work from the first pull, before anything has warmed up. A sintered pad offers that, and it stays consistent as the day goes on. On wet leaves and stones, the rider relies on precise, measured braking, and a pad that responds promptly on a wet disc makes this easier. The strength of the 450 means speed builds quickly on descents, so predictable braking is essential in slippery conditions.

Winter Care

Salted roads between trails and wet mud both attack the brakes. Clean the caliper after each ride, dry it, and check the pistons for corrosion. Fresh fluid before winter is a good habit.

Fitment and Compatibility

AGPA51 is Accossato's front pad for the WR450F of 2003 to 2015. For 2020 to 2022, AGPA288 is listed at the front; for the 2016 to 2019 bikes there is no Accossato front pad in our data. At the rear, AGPP106 covers 2003 to 2022. A single front caliper needs one box. Accossato's disc list for the model includes DK111, DK168, DK268 and DK269. After fitting, press the lever until it is firm and bed in the pads with a few steady stops.

Road Approval

We hold no German ABE or test mark. This pad is offered for off-road competition use.

Scope of Delivery

Two AGPA51 Sintered (ST) pads for the front caliper.

Specifications

  • Part number: AGPA51ST
  • Compound: Sintered (ST)
  • Dimensions: 94 × 34.2 × 7.2 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▼
  • Yamaha WR450F (2003–2015)
  • Beta RR 125 2T (2018–2019)
  • Beta RR 300 2T (2013–2019)
  • Beta RR 390 4T (2015–2021)
  • Beta RR 430 4T (2015–2021)
  • Beta RR 480 4T (2015–2019)
  • GasGas EC 200 (2000–2017)
  • Honda CRF150F (2003–2021)
  • Honda CRF230F (2003–2021)
  • Honda CRF250F (2019–2024)
  • Honda CRF250R (2004–2026)
  • Honda CRF250X (2004–2019)
  • Honda CRF450R (2002–2026)
  • Honda CRF450RX (2017–2026)
  • Honda CRF450X (2005–2024)
  • Kawasaki KLX 450R (2007–2024)
  • Kawasaki KX250F (2004–2022)
  • Kawasaki KX450 (2019–2023)
  • Kawasaki KX450F (2006–2022)
  • Kawasaki KX450X (2021–2023)
  • Suzuki DR-Z400S (2000–2023)
  • Suzuki RM-Z 250 (2004–2026)
  • Suzuki RM-Z 450 (2005–2020)
  • Suzuki RMX450Z (2010–2018)
  • Yamaha WR250F (2003–2018)
  • Yamaha WR250R (2008–2020)
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08 · Paddock

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