Skip to main content Skip to search Skip to main navigation
Fast Shipping
100% Money Back Guarantee
+43 664 20 44 685
info@import-wheels.com

SIMONS Silencer Duo - 63,5mm - LEISE

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

SIMONS Universal Stainless Steel Dual-Flow Muffler – Extremely Quiet & High-Performance

This compact dual-inlet and dual-outlet SIMONS muffler is designed for high-performance exhaust systems requiring symmetrical flow or true duplex layouts. With a 315 mm body and 2×63 mm connections on both inlet and outlet sides, it delivers excellent flow capacity for engines up to approx. 600 HP. The oval housing (190×120 mm) provides outstanding sound damping while maintaining minimal back pressure thanks to its straight-through perforated absorption core. Manufactured entirely in Sweden using premium stainless steel (1.4307), this muffler guarantees long-lasting durability and superior acoustic performance.

Key Features

  • High-grade stainless steel 1.4307
  • Dual inlet & dual outlet: 2×63 mm (slotted, clamp-fit compatible)
  • Extremely quiet – optimized acoustic absorption
  • Oval housing (190×120 mm) for enhanced noise control
  • Straight-through perforated core for maximum flow
  • Suitable for engines up to approx. 600 HP
  • Ideal for true dual systems or symmetrical exhaust layouts
  • Made in Sweden – premium quality manufacturing

Technical Specifications

  • Material: Stainless Steel 1.4307
  • Body Length: 315 mm
  • Diameter / Shape: 190 × 120 mm oval
  • Connections: 2× 63 mm (inlet) & 2× 63 mm (outlet)
  • Outlet Spacing: 14 mm (+/− 2 mm)
  • Performance Range: Up to approx. 600 HP
  • Weight: 4 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 10 dB reduction corresponds to about half perceived loudness.

Legal Notice

No TÜV approval. Motorsport use or individual approval (§21) required.

Anschluss: 63,5 mm

About SIMONS – Premium Exhaust Technology from Sweden

SIMONS is a renowned Swedish manufacturer specializing in high-quality stainless-steel exhaust components. All SIMONS mufflers and exhaust parts are fully produced in Sweden, ensuring consistent quality, precise craftsmanship, and long-lasting durability. Unlike low-cost imports, SIMONS focuses on engineered performance, excellent acoustic control, and premium material selection. SIMONS products are widely used in motorsport, custom exhaust fabrication, high-performance builds, and enthusiast applications where reliability and sound control are essential.

Core Strengths & Philosophy

  • 100% Made in Sweden – no outsourced manufacturing, guaranteeing stable quality standards.
  • High-grade stainless steel (1.4307) for maximum durability and corrosion resistance.
  • Advanced noise reduction – SIMONS mufflers are known to be significantly quieter than many competing brands in comparative tests.
  • Straight-through absorption design – no internal chambers, ensuring very low exhaust backpressure for maximum engine performance.
  • Compatible with high-power applications – depending on the model, suitable for 300–1000+ HP builds.
  • Flexible installation – slotted inlets/outlets allow both clamp mounting and welding.
  • Versatile use – can be installed as front, mid, or rear mufflers thanks to the fully perforated-core layout.

Product Characteristics

  • Stainless steel construction throughout (housing + connections).
  • Optimized muffler shapes: round, oval, split, dual-flow, and T-split configurations.
  • Large body volumes available for exceptional sound reduction.
  • Perforated straight-pipe internals for maximum flow efficiency.
  • Ideal for turbocharged engines, performance modifications, and custom exhaust builds.

Noise Reduction Expertise

SIMONS mufflers are known for producing a very quiet exhaust tone compared to many alternatives. Test results from motorsport workshops (e.g., Boost-Products) have shown superior noise-damping performance while still maintaining optimal flow characteristics. A 10 dB reduction is perceived by the human ear as roughly half the loudness — SIMONS products consistently achieve strong reductions depending on model and configuration.

Legal Information

  • No TÜV approval included.
  • Use in motorsport or with individual inspection/approval (§21) only.
  • Responsibility for road legality depends on regional regulations.

Who is SIMONS suitable for?

  • Performance-oriented vehicle builds
  • Custom dual-exit and multi-pipe exhaust systems
  • Turbo and high-horsepower applications
  • Customers seeking excellent noise reduction without sacrificing power
  • Fabricators requiring robust, weld-friendly stainless components

Summary

SIMONS stands for Swedish precision, robust stainless-steel construction, and outstanding sound dampening. Their universal mufflers and exhaust components provide an ideal balance of performance, acoustics, and longevity — making SIMONS one of the most trusted brands for custom and motorsport-grade exhaust systems.

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.


Quick Contact Widget