BY REFERENCE RC RACING
Manufacturers
BY REFERENCE RC RACING
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ET46W-GN
New product
Known as the "IRESA silencer", here you will find the RC RACING and46W-GN stainless steel exhaust silencer, manufactured in Spain, for which NSB CONCEPT has been an official distributor since 2009
RC RACING and46W-GN Stainless Steel Exhaust Silencer
The RC RACING and46W-GN silencer, like all our other exhausts, has been manufactured in our Spanish workshop since the 1980s.
All components of the RC RACING and46W-GN exhaust silencer are made of 304 stainless steel.
The pipes are available in standard diameters:
- 40mm
- 45mm
- 50mm
- 55mm
- 60mm
The largest diameter is always used to achieve optimal performance before being reduced by hydraulic press to the diameter of your intermediate pipe. Original:

The soundproofing section of the and46W-GN RC RACING stainless steel silencer is made of 4 elements:
- Perforated 304 stainless steel tube, 1.6-2mm thick
- Steel wool to prevent the soundproofing material from passing through the perforated tube
- Soundproofing material molded to the silencer body
- 304 stainless steel silencer body, 1.6mm thick, 90mm outer diameter for Group N and external diameter 127mm for the road

The elements of the and46W-GN silencer are welded together using MIG (stainless steel wire with gas) on a pedal lathe for regularity of the weld and a significant thickness guaranteeing the solidity of the and46W-GN RC RACING silencer:

The final assembly of the and46W-GN exhaust silencer is done on a welding jig such as this and326:

This ensures that 100% of the and46W-GN silencers leaving the workshops are compliant, free of any defects, and fit perfectly in place of the original.
