Yoshimura has released its AT2 Race Series full exhaust system for Triumph’s 660 platform. The system fits both the Trident 660 (2021–2024) and the Tiger Sport 660 (2022–2024). It replaces the stock exhaust with a lighter, 4.1 kg setup designed for track use.
Dyno testing shows a 6.9% increase in horsepower and a 1.3% torque gain. Those numbers translate to sharper response and a stronger midrange. The stainless steel construction includes a pre-muffler in the collector, shaping a deeper and more aggressive tone from the triple-cylinder engine.
Design cues include sharp, angular lines and Yoshimura’s signature Works Finish, which develops a patina with use. Riders will notice quicker steering thanks to the reduced weight. Yoshimura lists the system at $2,599.95.
Available through A1 Accessory Imports, the AT2 comes as part of Yoshimura’s Race Series range and is intended for closed-course riding. The part number is YO-19660AP520.
Triumph’s 660 platform has become a popular choice among riders stepping into the middleweight segment. With the AT2 system, Yoshimura provides a practical upgrade for those wanting improved performance, sound, and visual appeal without altering the bike’s core handling balance.
My two cents…
Ditch that factory pipe and save a few kilos while pretending you’re on the Isle of Man, not stuck behind a Prius. Track-only, officially. But come on, we all know “closed course” sometimes means “empty Sunday morning.”
Click on the link below for the full article:
https://www.mcnews.com.au/yoshimura-at2-full-system-for-triumph-trident-and-tiger-sport-660/
