Accossato front brake pads AGPA58 for Triumph THUNDERBIRD (2009-2018)
02 · Data & docs

The facts.

Technical data
Part numberAGPA58EV2
CompoundEV2 racing
Dimensions69.8 × 55 × 8.5 mm
Friction coefficientapprox. 0.48 at 50 °C, 0.59 at 350–375 °C, 0.48 at 600 °C (Accossato friction chart)
Contents2 brake pads, one set for one caliper
DescriptionThe whole story▼

AGPA58EV2 is the racing version of Accossato's front pad for the Triumph Thunderbird, listed for 2009 to 2018. A racing compound on a cruiser is an unusual choice, and it is meant only for owners who take their Thunderbird to closed-course events, where the brakes are used at full load for lap after lap. For everyday riding and touring, the Organic or Sintered versions of this pad are the more sensible choices.

Key Features

  • Front pads AGPA58 for the Triumph Thunderbird, 2009 to 2018
  • EV2 racing compound, SKU AGPA58EV2
  • Accossato describes it as a top racing compound
  • Made for sustained hard stops on a closed course
  • Suits timed sessions
  • Not intended for daily road use
  • Same pad in OR, ST and EV1
  • No test documents; racing use only

Construction and Material Quality

Accossato counts EV2 racing among its top competition compounds. It is made for the heavy, repeated loads of timed sessions, where the brake is pushed hard at every marker. Like Accossato's other pads, it is designed to limit heat build-up and to wear evenly across an event.

On a Closed Course

Taking a heavy cruiser onto a circuit places unusual demands on the front brake: a lot of mass to slow, lap after lap, with little time to cool. The EV2 compound is meant for these conditions. Prepare the Thunderbird carefully: fresh high-quality fluid, clean discs, new pads bedded in before the first timed session. Between runs, check lever travel and look at the pads for even wear. If the lever starts to feel different, stop and investigate before going out again. It is also worth riding a few slow laps at the end of the day to let the discs and pads cool down gradually before the bike goes back on the trailer.

Session Notes

Write down lever feel and pad condition after each run; small changes are easier to spot when you keep a record.

Fitment and Compatibility

According to Accossato, AGPA58 fits the front of the 1600 Thunderbird from 2009 through 2018 and the Commander, LT and Nightstorm 1700 models from 2014 through 2018. For the back wheel the maker names AGPA92. A box contains pads for one caliper, so check your Thunderbird's front brake layout before ordering, and always change pads on both sides of the axle together.

Road Approval

There is no ABE and no test certificate available to us for this pad. AGPA58EV2 is sold for racing.

Scope of Delivery

One box with two EV2 racing front pads for one caliper.

Specifications

  • Part number: AGPA58EV2
  • Compound: EV2 racing
  • Dimensions: 69.8 × 55 × 8.5 mm
  • Friction coefficient: approx. 0.48 at 50 °C, 0.59 at 350–375 °C, 0.48 at 600 °C (Accossato friction chart)
  • 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)
07 · Support

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