The facts.
| Part number | AGPP91ST |
|---|---|
| Compound | Sintered (ST) |
| Dimensions | 78 × 41.3 × 9 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▼
There is a moment on every tour that has nothing to do with riding: the loaded bike standing on a wet slope, front wheel pointing uphill, waiting for a barrier or a ferry ramp, one foot down and the rear brake holding the weight. Accossato's Sintered (ST) material on the AGPP91 rear pad is chosen by people who put the BMW F 850 GS of 2018 to 2023 into situations like that in every kind of weather.
Key Features
- Rear pads in the Sintered (ST) compound, article number AGPP91ST
- For the BMW F 850 GS, model years 2018 to 2023
- Accossato describes an unchanging grip level hot or cold, and no loss of it on a wet disc
- Aimed at wet, slow-speed work with a loaded machine
- One rear caliper, one box, two pads
- OR and STMX materials are offered on the same plate
- Front of this bike: AGPA92 across the same years
- Nothing on file documents it for the road; competition part
Construction and Material Quality
Accossato's account of the sintered material comes down to staying the same. It offers one grip level whether cold or hot, and a wet disc does not reduce it. At the rear of a travel enduro the wet half of that promise matters most, because the rear disc is showered by the tyre all day and is rarely dry for long in poor weather. A pad that needs a revolution or two to clear the water before it answers is a nuisance at low speed, and low speed is where the rear brake does most of its work. The plate is the widely used AGPP91; two pads fill the one rear caliper.
Holding Still on a Wet Slope
Low-speed work with a loaded bike is a matter of confidence, and confidence comes from knowing what a control will do before you use it. Holding an F 850 GS still on a wet incline, walking it backwards into a space between two cars, or creeping down a slippery boat ramp all depend on the rear brake behaving exactly as it did the previous hundred times. So does the moment when you set off again on that same slope, releasing the pedal against the clutch without letting the bike roll back onto your foot. None of this generates any heat whatsoever, but all of it happens in the wet, in the dirt, and usually with somebody watching. It is also a good reason to keep the rear caliper clean, since a piston reluctant to move will make the pedal vague long before the material has run out.
Fitment and Compatibility
Accossato's catalogue puts the AGPP91 at the rear of the BMW F 850 GS between 2018 and 2023, matching the years it gives for the front. There is a single caliper behind, so one box is all the bike needs, and the two pads in it are fitted as a pair. The same plate carries the OR and STMX materials as well, the front of the F 850 GS runs the AGPA92 over the same span, and Accossato also lists the DK006 disc for this machine.
Road Approval
Accossato supplies the AGPP91ST with no German ABE, and no approval certificate for it exists in our records. It is therefore intended for competition and for closed-circuit riding.
Scope of Delivery
Two AGPP91 pads in the Sintered (ST) compound, the set for one rear caliper.
Specifications
- Part number: AGPP91ST
- Compound: Sintered (ST)
- Dimensions: 78 × 41.3 × 9 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▼
- BMW F850GS (2018–2023)
- Aprilia CAPONORD 1200 (2013–2019)
- Aprilia CAPONORD 1200 RALLY (2015–2019)
- Aprilia DORSODURO 750 (2008–2018)
- Aprilia DORSODURO 900 (2018–2020)
- Aprilia RS 457 (2024–2025)
- Aprilia SHIVER 750 (2007–2018)
- Aprilia SHIVER 900 (2018–2020)
- Aprilia TUAREG 660 (2022–2025)
- Aprilia TUAREG 660 RALLY (2025)
- BMW F700GS (2013–2016)
- BMW F750GS (2018–2024)
- BMW F800GS (2008–2018)
- BMW F800GT (2013–2020)
- BMW F800R (2009–2018)
- BMW F900GS (2024–2026)
- BMW F900GS ADVENTURE (2024–2026)
- BMW F900R (2020–2026)
- BMW F900XR (2020–2026)
- BMW G310GS (2017–2026)
- BMW G310R (2016–2026)
- BMW G650GS (2009–2015)
- BMW M1000R (2023–2026)
- BMW S1000R (2013–2024)
- BMW S1000RR (2009–2024)
- Benelli TRK 702 (2024)
- Benelli TRK 702 X (2023–2025)
- CFMOTO 700MT (2024–2025)
- CFMOTO MT 450 (2024–2026)
- Ducati HYPERMOTARD 698 Mono (2024–2026)
- Ducati MONSTER 797 (2017–2021)
- Ducati SCRAMBLER 1100 (2018–2024)
- Ducati SCRAMBLER 1100 SPECIAL (2018–2019)
- Ducati SCRAMBLER 1100 SPORT (2018–2024)
- Ducati SCRAMBLER 800 (2017–2025)
- Ducati SCRAMBLER CLASSIC (2015–2019)
- Ducati SCRAMBLER ICON (2015–2026)
- Ducati SCRAMBLER SIXTY2 (2016–2020)
- Fantic Motor Caballero 500 (2017, 2022–2023)
- Husqvarna ENDURO 701 (2017–2024)
- Husqvarna SUPERMOTO 701 (2015–2024)
- Husqvarna SVARTPILEN 125 (2021–2025)
- Husqvarna SVARTPILEN 401 (2017–2025)
- Husqvarna SVARTPILEN 701 (2019–2020)
- Husqvarna SVARTPILEN 801 (2025)
- Husqvarna VITPILEN 125 (2021–2025)
- Husqvarna VITPILEN 401 (2017–2025)
- Husqvarna VITPILEN 701 (2018–2020)
- Husqvarna VITPILEN 801 (2025)
- Husqvarna VITPILEN 801 CUSTOM (2025)
- Indian SCOUT BOBBER (2017–2024)
- KTM 125 DUKE (2011–2019)
- KTM 200 DUKE (2012–2017)
- KTM 250 DUKE (2014–2015)
- KTM 390 ADVENTURE (2020–2023)
- KTM 390 ADVENTURE SW (2023)
- KTM 390 DUKE (2013–2023)
- KTM 690 DUKE (2008–2019)
- KTM 690 DUKE R (2010–2017)
- KTM 690 ENDURO R (2009–2023)
- KTM 690 SMC R (2007–2011, 2014–2024)
- KTM 790 DUKE (2018–2020)
- KTM 890 DUKE R (2020–2023)
- KTM 990RC R (2025–2026)
- KTM RC 125 (2014–2024)
- KTM RC 200 (2014–2024)
- KTM RC 250 (2014–2015)
- KTM RC 390 (2014–2025)
- KTM RC4R 250 (2020)
- Royal Enfield CONTINENTAL GT 650 (2020–2025)
- Royal Enfield Classic 350 (2023–2025)
- Royal Enfield Classic 500 (2019)
- Royal Enfield HIMALAYAN 411 (2019–2023)
- Royal Enfield Interceptor 650 (2019–2023)
- Royal Enfield METEOR 350 (2021–2025)
- SWM SUPERDUAL T (2015–2018)
- Triumph Daytona 675 (2013–2018)
- Triumph Daytona 675 R (2013–2018)
- Triumph Daytona 765 Moto 2 (2020–2022)
- Triumph SCRAMBLER 400X (2024–2026)
- Triumph SPEED 400 (2024)
- Triumph STREET TRIPLE 660 S (2017–2020)
- Triumph STREET TRIPLE 675 (2013–2016)
- Triumph STREET TRIPLE 675 R (2013–2018)
- Triumph STREET TRIPLE 675 RX (2015–2016)
- Triumph STREET TRIPLE 765 R LOW (2017–2023)
- Triumph STREET TRIPLE 765 S (2017–2020)
- Triumph Street Triple 765 R (2017–2023)
- Triumph Street Triple 765 RS (2017–2025)
- Triumph TIGER 1200 GT (2022–2025)
- Triumph TIGER 1200 GT EXPLORER (2022–2023)
- Triumph TIGER 1200 GT PRO (2022–2025)
- Triumph TIGER 900 (2020–2023)
- Triumph TIGER 900 GT (2020–2025)
- Triumph TIGER 900 GT LOW (2020–2025)
- Triumph TIGER 900 GT PRO (2020–2025)
- Triumph TIGER 900 RALLY (2020–2025)
- Triumph TIGER 900 RALLY PRO (2025)
- Triumph TIGER SPORT 800 (2025)
- Triumph TIGER SPORT 850 (2021–2023)
- Voge 900DSX (2024–2026)
- Yamaha TENERE 700 (2019–2026)
- Yamaha TENERE 700 WORLD RAID (2022–2026)
- Yamaha WR 125R (2009–2016)
- Yamaha XT660Z TENERE (2008–2015)
- Zero DS (2014–2017)
- Zero DSR (2016–2017)
- Zero FXE (2022)
- Zero FXS (2016–2022)
- Zero S (2014–2017, 2024)
- Zero SR (2014–2017, 2019–2021, 2024)
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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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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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