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SIMONS Silencer Slim - 63,5mm - LEISE

"SIMONS Silencer Slim - 63,5mm - LEISE"

SIMONS Universal Stainless Steel Muffler – Compact, Quiet & Performance-Friendly

This compact SIMONS universal muffler offers excellent noise reduction in a space-saving round design. Fully made in Sweden from high-grade stainless steel (1.4307), it provides reliable performance and longevity even in demanding setups. The straight-through absorption core ensures minimal back pressure for engines up to approx. 350 HP, while still delivering a noticeably quiet exhaust note. Ideal for custom builds, restorations, turbo conversions, or motorsport configurations.

Key Features

  • Made of stainless steel 1.4307
  • Very quiet – superior sound damping compared to many competitor brands
  • Straight-through perforated core, no chambers
  • Round 125 mm body – compact and versatile
  • Suitable up to approx. 350 HP
  • Can be used as front, mid, or rear muffler
  • Made in Sweden – no low-cost imports

Technical Specifications

  • Material: Stainless Steel 1.4307
  • Body Length: 420 mm
  • Body Diameter: 125 mm round
  • Inlet Size: 63.5 mm (inner diameter, slotted)
  • Performance Range: Up to approx. 350 HP
  • Weight: 3.3 kg

Noise Reduction Comparison

Measured values (idle & 2000 rpm, vs. no muffler):
  • 76 mm Split: −5 dB*
  • 76 mm Turbex: −7 dB*
  • 76 mm Turbo: −8 dB*
  • 76 mm Turbolight: −7 dB*
  • 76 mm Turbonett: −2 dB*
  • 76 mm Turbotight: −3 dB*

*Approximate values. A reduction of 10 dB equals roughly half the perceived loudness.

Legal Notice

No TÜV approval. Motorsport or individual approval (§21) only.

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