Accossato organic brake pads, front, AGPA58OR for Triumph THUNDERBIRD (2009-2018) — placeholder, product photo coming soon
02 · Data & docs

The facts.

Technical data
Part numberAGPA58OR
CompoundOrganic (OR)
Dimensions69.8 × 55 × 8.5 mm
MaterialOrganic compound: organic resins, aramid fibres, graphite and metal powders
Friction coefficient0.41 average (0.36 minimum, 0.46 maximum), Ranzi test to European regulation
Density2.60 g/cm³ at 20 °C (+0.10 / −0.05)
Hardness100 HRR (± 10 HRR, Rockwell HRR scale)
Temperature resistance250 °C working, 400 °C maximum peak
Minimum shear strength20 kg/cm²
Contents2 brake pads, one set for one caliper
DescriptionThe whole story▼

The Triumph Thunderbird is a big parallel-twin cruiser, and much of its life is spent at relaxed speeds: boulevard rides, trips to a meeting, slow miles through villages. Accossato lists its front pad AGPA58 for the Thunderbird family from 2009 to 2018, and AGPA58OR is the Organic version. It is a smooth, quiet compound that engages gently and spares the front discs, a good fit for a heavy bike ridden at an easy pace.

Key Features

  • Front pads AGPA58 for the Triumph Thunderbird range, 2009 to 2018
  • Organic compound, SKU AGPA58OR
  • Accossato: longer performance with limited disc wear
  • Progressive bite that suits a heavy cruiser
  • Quiet during slow riding in town
  • Helps the front discs last
  • Also on this pad: ST, EV1 and EV2
  • No approval documents on file; for competition use

Construction and Material Quality

Accossato describes its Organic compound as one that provides long-lasting performance while keeping disc wear to a minimum. On a cruiser as substantial as the Thunderbird, where the front discs work hard to slow a lot of mass, that disc protection has real value. Accossato's general design goals apply too: limited heat build-up to hold off fading, and strong stopping.

Cruising Pace

A Thunderbird is rarely ridden in a hurry. It rolls through town, idles in a queue at the lights and cruises along coastal roads. In that kind of use a front brake that bites smoothly and predictably is more pleasant than one that grabs, especially when turning at walking pace with the bars on full lock. Organic pads also tend to be quiet, which suits the character of a big, laid-back cruiser. Riders who are new to a heavy machine often appreciate a front brake that is easy to feed in.

Heavy Bike, Careful Maintenance

Weight means more work for the front brake. Check pad thickness regularly, look for scoring on the discs and replace the fluid at the recommended intervals.

Fitment and Compatibility

Accossato lists AGPA58 for the front brake of the Thunderbird 1600 from 2009 to 2018 and of the Thunderbird 1700 Commander, LT and Nightstorm from 2014 to 2018. For the rear, the maker offers AGPA92 over the same period. A box contains one set for one caliper, so check how many calipers your Thunderbird has at the front and order accordingly. Replace pads per axle and bed them in with a series of moderate stops.

Road Approval

There is no German ABE or test mark available to us for AGPA58OR. We sell it for competition use.

Scope of Delivery

Two Organic front pads for a single caliper.

Specifications

  • Part number: AGPA58OR
  • Compound: Organic (OR)
  • Dimensions: 69.8 × 55 × 8.5 mm
  • Material: Organic compound: organic resins, aramid fibres, graphite and metal powders
  • Friction coefficient: 0.41 average (0.36 minimum, 0.46 maximum), Ranzi test to European regulation
  • Density: 2.60 g/cm³ at 20 °C (+0.10 / −0.05)
  • Hardness: 100 HRR (± 10 HRR, Rockwell HRR scale)
  • Temperature resistance: 250 °C working, 400 °C maximum peak
  • Minimum shear strength: 20 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▼
  • Triumph THUNDERBIRD (2009–2018)
  • Triumph ROCKET III ROADSTER (2010–2018)
  • Triumph SPRINT GT 1050 (2010–2015)
  • Triumph THUNDERBIRD STORM (2011–2018)
  • Triumph TIGER EXPLORER (2012–2015)
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08 · Paddock

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