Exhaust pipes (expansion chambers) for YAMAHA two-strokes: YZ 65, YZ 85, YZ 125, YZ 250, WR and DT, as well as the FANTIC XX and XE that share their engine base. Available brands are PRO CIRCUIT, SCALVINI, FRESCO and ATHENA.
On a two-stroke engine, the exhaust pipe shapes the power curve: its volume and cones set the RPM range where the engine pulls hardest. A performance pipe brings, depending on the model, more low-end or more over-rev, and is a worthwhile replacement for a dented stock pipe, which costs power.
FRESCO references cover the DT 125 LC and DTR 125 in particular. Check your bike's year in the product title, and remember the silencer and connecting seals when replacing the pipe.
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