The facts.
| 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 |
DescriptionThe whole story▼
Wet rock is the surface that catches people out. A Beta RR 300 2T climbing a streambed in November meets slabs polished by water, moss on the edges of every step, and a front disc that has been soaked continuously since the first crossing. Accossato's Sintered (ST) material is built to keep its grip level steady in precisely those circumstances, hot or cold, wet or dry, and it fills the AGPA51 shape listed for the front wheel of the RR 300 from 2013 to 2019.
Key Features
- Front pads for the Beta RR 300 2T, 2013 to 2019
- Article number AGPA51ST: the AGPA51 shape in the Sintered (ST) material
- Accossato names a high, constant grip level in cold and heat and on a wet disc
- For streambeds, winter woodland and riding through every season
- Each box holds two pads, the pair one caliper works with
- Accossato also presses this shape in the OR, STMX and EV1 materials
- Rear of this Beta: AGPP106, 2013 to 2019, with the DK017 disc in the same catalogue
- No German ABE documented; for competition and off-road use
Construction and Material Quality
Steadiness is what Accossato sells with the Sintered (ST) mixture. The grip is meant to stay at a similar high level across the temperature range and to survive a soaking without changing its mind, which is a very different promise from raw power. Technical riding depends on it. A rider picking a line up a wet step is applying the front brake in tiny amounts with one finger, and the whole manoeuvre falls apart if the same finger movement produces a different result on the second attempt. The material fills the AGPA51 outline for this caliper.
Streambeds and Polished Stone
The 300 has torque enough to climb almost anything, which means its rider is often somewhere that demands equal precision on the way back down. Coming off a wet rock step is a matter of releasing the front brake at the instant the wheel drops and catching the bike again immediately afterwards, and between those two moments the disc has been rinsed by the stream. Water on steel behaves like a film that has to be pushed away before anything bites, and how quickly that happens decides whether the descent feels controlled or alarming.
A bike used this way is never dry for long. Let it drain and dry properly rather than parking it wet, and if it has been standing for a fortnight expect a little surface rust on the disc that the first few applications will clear. Check the fluid before a hard weekend, since a brake that has been worked all day gets hot even on a slow section. Look at the pads often enough to know their rate of loss, and clean the caliper pistons before pushing them back rather than forcing grit past the seals.
Fitment and Compatibility
Accossato covers the Beta RR 300 across seven seasons here, 2013 to 2019 inclusive, with the AGPA51 at the front wheel. A caliper takes two pads, they wear as a pair and they are renewed as a pair, which is what the box contains. The rear wheel of the RR 300 2T is looked after by the AGPP106 over the same years, and the DK017 disc is listed for this model too, for the day the original one has given all it has.
Road Approval
The AGPA51ST reaches us without a German ABE and without test paperwork. It belongs with our competition parts, for enduro events and closed ground.
Scope of Delivery
One box with two AGPA51 pads in the Sintered (ST) material, a single caliper's set.
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▼
- Beta RR 300 2T (2013–2019)
- Beta RR 125 2T (2018–2019)
- 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)
- Yamaha WR450F (2003–2015)
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
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