Js Racing FX-PRO Full Titanium Silencer 60RR EMS Honda Civic EG6. The 70RR is a competition muffler that maximizes the potential of the VTEC engine. Back pressure has been reduced to the limit by expanding the main pipe diameter to 70? , which is the maximum of the J'S RACING muffler, and replacing it from the front part of the catalyst (excluding some vehicle models). By reducing the weight of the muffler, the potential of the entire car is also improved.The 70RS is a competition muffler that maximizes power and takes into account circuit volume restrictions. A silencer is attached to the center pipe while the main pipe diameter is 70? In order to bring out the power. By replacing after the catalyst, the noise reduction effect is improved compared to the RR series. This is a competition muffler that combines power and muffling effect. The 60RS developed for the street has a main pipe of 60? And the silencer part has a straight structure to achieve torque and power up in all areas. Our Customer Service team will endevour to resolve any issues. This applies to all orders with us unless. Products that are ordered in error or that you changed your mind on will be entitled to a credit note at our discretion. This does not affect your statutory rights.