Accossato rear brake pads AGPP106 for Yamaha YZ250 (2003-2026)
02 · Data & docs

The facts.

Technical data
Part numberAGPP106STMX
CompoundOff-road sintered (STMX)
Dimensions66.9 × 36 × 9.3 mm
MaterialSintered copper friction material with abrasives and carbon, for off-road use
Friction coefficient0.65 average (0.58 minimum, 0.72 maximum), JASO regulation
Density4.50 g/cm³ at 20 °C (+0.10 / −0.05)
Temperature resistance450 °C working, 600 °C maximum
Contents2 brake pads, one set for one caliper
DescriptionThe whole story▼

Soft, churned-up ground is where a Yamaha YZ250 ridden in races or hard training asks the most of its rear brake. It works hard there, dragged into ruts and leaned on over rough downhills while mud clogs everything around it. For the YZ250 from 2003 to 2026, Accossato makes the rear pad AGPP106 in its Off-road sintered compound, SKU AGPP106STMX, for people who race and train where water, sand and grit are the normal state of affairs.

Key Features

  • STMX rear pad for dirt racing, SKU AGPP106STMX
  • Yamaha YZ250, 2003 to 2026
  • Made for mud, sand, water and grit
  • For racing and hard training
  • Rear pad for dirt use
  • One set for the rear caliper
  • Front pads AGPA110 and AGPA288, discs DK111 and DK168 listed

Construction and Material Quality

STMX is the compound Accossato builds for the dirt, and this is how AGPP106 is supplied for riders who put their YZ250 through wet, abrasive races. Across its range the company names slow wear, fade kept in check by limited heating and a strong stopping effect. Beyond that we make no claim about what goes into the pad.

Until the Flag

In a long, muddy race, the rear brake is used on every corner entry and every downhill, and it is covered in dirt almost from the start. The STMX rear pad is chosen so that it keeps working through all of that on the YZ250. After the race, wash the rear caliper with low pressure, let it dry and check the pad thickness before the next event. Riders who race regularly should keep a spare set in the van. For dry, relaxed riding, OR is gentler; for all-season trail use, ST. Check the rear disc guard as well, since a bent guard can rub on the disc and upset the pedal feel.

Fitment and Compatibility

Accossato lists this STMX version of AGPP106 for the rear of the Yamaha YZ250 over 2003 to 2026. The single rear caliper takes one box. The front of the YZ250 uses AGPA110 (2008 to 2021) or AGPA288 (2021 to 2026), both available in STMX, and the discs DK111 and DK168 are listed. Remove dried mud from the caliper before pushing the piston back, and make sure the piston moves freely before bedding the new pads.

Road Approval

There is no ABE or approval certificate for this pad in our records. It is offered for racing and competition use.

Scope of Delivery

Two rear pads in one box, one set for the rear caliper.

Specifications

  • Part number: AGPP106STMX
  • Compound: Off-road sintered (STMX)
  • Dimensions: 66.9 × 36 × 9.3 mm
  • Material: Sintered copper friction material with abrasives and carbon, for off-road use
  • Friction coefficient: 0.65 average (0.58 minimum, 0.72 maximum), JASO regulation
  • Density: 4.50 g/cm³ at 20 °C (+0.10 / −0.05)
  • Temperature resistance: 450 °C working, 600 °C maximum
  • 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 YZ250 (2003–2026)
  • Beta RR 125 2T (2018–2019)
  • Beta RR 300 2T (2013–2019)
  • Beta RR 390 4T (2015–2019)
  • Beta RR 430 4T (2015–2019)
  • Beta RR 480 4T (2015–2019)
  • GasGas EC 200 (2017)
  • GasGas EC 250 (2012–2020)
  • GasGas EC 300 (2012–2020)
  • Kawasaki KLX 450R (2007–2024)
  • Kawasaki KX250F (2004–2018, 2020)
  • Kawasaki KX450 (2019–2026)
  • Kawasaki KX450F (2006–2018)
  • Kawasaki KX450X (2021–2024)
  • Suzuki RM-Z 250 (2004–2026)
  • Suzuki RM-Z 450 (2005–2020)
  • Suzuki RMX450Z (2010–2018)
  • TM Racing MX 125 2T (2005–2025)
  • TM Racing MX 250 2T (2005–2025)
  • TM Racing MX 250 4T (2005–2025)
  • TM Racing MX 300 2T (2005–2025)
  • TM Racing MX 450 4T (2005–2019)
  • Yamaha WR 250 X (2008–2016)
  • Yamaha WR250F (2003–2013, 2015–2024)
  • Yamaha WR250R (2008–2020)
  • Yamaha WR450F (2003–2022)
  • Yamaha YZ125 (2003–2026)
  • Yamaha YZ250F (2003–2026)
  • Yamaha YZ250FX (2015–2021)
  • Yamaha YZ450F (2003–2022)
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08 · Paddock

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