659504 Muffler 3.5cc EFRA 2131 + Manifold S-M - Chrome

FX Royal Racing Engines EFRA 2131 tuned muffler & manifold with chrome coating, produced by machining instead of extrusion like other FX muffler. Provides different power characteristics, with slightly more power at both bottom & top ends.

The chrome coating helps the muffler and manifold stay clean.

EFRA approved and recommended for applications that require more bottom-end power. Specially designed and tuned to work with FX engines. EFRA number engraved.

• Chrome coating
• More bottom power
• More top power
• EFRA approved, EFRA number engraved
• Specially designed & tuned for FX engines