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Interesting Facts About the Yamaha XT 660 R

The Yamaha XT660R debuted in 2004 as a standard Enduro model, with the “R” badge indicating its racing‑oriented lineage. It arrived with a fuel‑injected, liquid‑cooled 660 cc single‑cylinder engine, marking Yamaha’s modern relaunch of the historic XT series.

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2004 Launch and the Meaning of “R”

Yamaha introduced the XT660R in 2004, reviving the XT name after decades of evolution. The “R” designation stands for racing, continuing the tradition of performance‑focused XT models.

Fuel Injection and Liquid Cooling Shift

The 2004 XT660R featured a fuel‑injected (FI) system and a liquid‑cooled engine, a clear departure from the older air‑cooled, carbureted XT predecessors. This modern power‑train helped improve reliability and performance across a wide range of riding conditions.

Five‑Valve Engine Heritage

The XT660R uses a five‑valve version of Yamaha’s 660 cc engine, a design choice highlighted in its specifications. This multi‑valve layout contributes to the bike’s smooth power delivery and respectable 47 bhp output.

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Yamaha XT 660 R Parts

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