The facts.
| Part number | AGPA29STMX |
|---|---|
| Compound | Off-road sintered (STMX) |
| Dimensions | 93.9 × 36.5 × 7.6 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 |
DescriptionThe whole story▼
Accossato's STMX mixture is its compound for off-road riders, and because the AGPA29 plate is shared with motocross bikes, it is also listed for the Triumph Bonneville Bobber Black from 2018 to 2023 and the Bobber 1200 of 2021 to 2023. On a cruiser this is a niche choice. It suits owners who ride their Bobber on gravel roads, dusty farm tracks or unsealed mountain passes and want a front pad designed for dirt.
Key Features
- AGPA29 front pad for the Triumph Bonneville Bobber, 2018 to 2023
- Bobber Black and later Bobber 1200 per Accossato
- STMX compound for off-road riders, SKU AGPA29STMX
- A niche option for gravel and dusty lanes
- Designed for dirt and contamination
- OR, ST and EV1 as alternatives
- Two pads per box
Construction and Material Quality
Accossato describes STMX simply as its compound for off-road riders, without further details. We keep to that description. The maker's general claims for its pads, limited heating against fade, slow wear and strong braking, apply here too.
Gravel Roads on a Bobber
Some Bobber owners enjoy leaving the tarmac behind: a gravel road to a lake, a dusty track to a remote café, an unsealed pass in the mountains. On those surfaces, dust and small stones reach the brakes constantly. The Off-road sintered STMX compound is designed for riding in dirty conditions. On a Bobber, that makes it an option for owners who regularly ride on unsealed roads. For normal road riding, the OR, ST and EV1 versions of this plate are more appropriate.
After a Dusty Ride
Rinse dust and grit from the front brake after riding on gravel, and check the disc for scoring. Small stones trapped between pad and disc can cause grooves.
An Honest Word
STMX was developed for motocross and enduro. On a heavy cruiser used mainly on tarmac, it offers no advantage, so choose it only if unsealed roads are a regular part of your Bobber's life.
Fitment and Compatibility
Accossato lists AGPA29 for the front of the Bobber Black (2018 to 2023) and the Bobber 1200 (2021 to 2023). The earlier Bobber 1200 (2017 to 2021) takes AGPA72, and both plates are listed for 2021. One box covers one caliper. The rear pad for the Bobber is AGPP89.
Road Approval
We have no ABE or approval documents for AGPA29STMX. It is offered for competition and off-road use.
Scope of Delivery
Two STMX front pads for one caliper of the Bobber.
Specifications
- Part number: AGPA29STMX
- Compound: Off-road sintered (STMX)
- Dimensions: 93.9 × 36.5 × 7.6 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▼
- Triumph BONNEVILLE BOBBER (2018–2023)
- BMW R NINET (2014–2023)
- BMW R NINET PURE (2017–2023)
- BMW R NINET RACER (2017–2020)
- BMW R NINET SCRAMBLER (2016–2023)
- BMW R12 (2024–2026)
- BMW R12 NINET (2024–2026)
- CFMOTO MT 800 (2022–2026)
- CFMOTO NK 800 (2024–2026)
- Ducati DESERT X (2023–2026)
- Ducati MULTISTRADA 1200 S (2015–2017)
- Ducati MULTISTRADA 1260 (2018–2021)
- Ducati MULTISTRADA 1260 S (2018–2021)
- Ducati MULTISTRADA 1260 S D AIR (2018–2019)
- Ducati MULTISTRADA V4 PIKES PEAK (2022–2026)
- GasGas MC 250F (2021–2026)
- GasGas MC 450F (2021–2026)
- Husqvarna FC 250 (2014–2026)
- Husqvarna FC 350 (2014–2026)
- Husqvarna FC 450 (2014–2026)
- Husqvarna FE 250 (2014–2023)
- Husqvarna FE 350 (2014–2023)
- Husqvarna FE 450 (2014–2023)
- Husqvarna FE 501 (2014–2023)
- Husqvarna FX 450 (2017–2020)
- Husqvarna NORDEN 901 (2022–2024)
- Husqvarna TC 125 (2014–2026)
- Husqvarna TC 250 (2014–2022)
- Husqvarna TE 125 (2014–2016)
- Husqvarna TE 250 (2014–2018)
- Husqvarna TE 300 (2014–2023)
- Husqvarna TX 125 (2017–2019)
- KTM 1050 ADVENTURE (2015–2016)
- KTM 1190 ADVENTURE (2013–2016)
- KTM 125SX (1996–2026)
- KTM 1290 SUPER ADVENTURE (2015–2016)
- KTM 1290 SUPER ADVENTURE R (2017–2020)
- KTM 1290 SUPER ADVENTURE S (2017–2023)
- KTM 1290 SUPER ADVENTURE T (2017–2019)
- KTM 150SX (2009–2022)
- KTM 250EXC-F (2006–2023)
- KTM 250SX (1996–2026)
- KTM 250SX-F (2005–2026)
- KTM 250XC (2006–2022)
- KTM 300EXC (1993–2014, 2018–2023)
- KTM 300XC (2006–2022)
- KTM 350EXC-F (2012–2023)
- KTM 350SX-F (2011–2026)
- KTM 450EXC-F (2004–2023)
- KTM 450XC-F (2006–2023)
- KTM 500EXC-F (2012–2024)
- KTM 790 ADVENTURE (2019–2024)
- KTM 790 ADVENTURE R (2019–2020)
- KTM 890 ADVENTURE R (2021–2024)
- KTM 890 ADVENTURE R RALLY (2024)
- KTM 890 SMT (2024)
- Kawasaki KX450 (2024–2026)
- Kawasaki KX450X (2024)
- Moto Guzzi Griso SE 8V 1200 (2007–2019)
- Moto Guzzi NORGE 1200 (2006–2019)
- Moto Guzzi SPORT 8V 1200 (2012–2015)
- Moto Guzzi STELVIO (2009–2019)
- Moto Guzzi V100 MANDELLO (2022–2023)
- Royal Enfield Classic 350 (2023–2025)
- Royal Enfield Classic 500 (2019)
- Royal Enfield HIMALAYAN 411 (2019–2023)
- Royal Enfield METEOR 350 (2021–2025)
- SWM RS 300 R (2015–2020)
- SWM RS 500 R (2015–2020)
- Sherco SE 125 (2017–2019)
- Sherco SE 300 (2014–2019)
- Sherco SEF 250 (2014–2019)
- Sherco SEF 300 (2014–2019)
- Sherco SEF 450 (2014–2019)
- TM Racing MX 125 2T (1996–2025)
- TM Racing MX 250 2T (2001–2025)
- TM Racing MX 250 4T (2001–2025)
- TM Racing MX 300 2T (1998–2025)
- TM Racing MX 450 4T (2003–2019)
- Triumph BONNEVILLE SPEEDMASTER (2018–2025)
- Triumph BONNEVILLE T120 (2021–2023)
- Triumph BONNEVILLE T120 BLACK (2021–2023)
- Triumph SPEEDMASTER (2018–2025)
- Triumph TIGER 800 XCA (2018)
- Triumph TIGER 800 XCX (2018–2020)
- Triumph TIGER 800 XRT (2018)
- Triumph TIGER 800 XRX (2018)
- Triumph TIGER 800 XRX LOW (2018–2020)
- Yamaha MT 15 MT 155 (2018–2021)
- Yamaha TENERE 700 (2019–2026)
- Yamaha TENERE 700 WORLD RAID (2022–2026)
- Yamaha XT660Z TENERE (2008–2015)
- Zero DS (2024)
- Zero DSR (2023)
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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.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
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.
Our team will personally help you choose the right gear or part — around 24h for a reply.