Full Exhaust Muffler RPM-67Racing Stainless φ67×300 CB400SF STD

【RPM 2638S-01 Full Exhaust Muffler RPM-67Racing Stainless Steel φ67×300 CB400SF STD Road Legal Roku-Nana Racing Motorcycle RPM】
■Product Description
The RPM-67Racing is an exhaust system born from approximately 300 meticulous handmade processes and TQC (Total Quality Control). It was launched in 1998 as an original muffler brand, a replica model of the F-TYPE, with no major changes made to the appearance of the RPM-4in2in1 F-TYPE (manufactured until 1989) or the internal structure of the silencer, which is crucial for sound quality.

■Detailed Description
●Exhaust Pipe
The adopted 4in2in1 manifold system provides a higher exhaust synergistic effect in 4-cylinder engines than the 4in1 manifold system, and greatly contributes to generating high-quality sound.
The material used is steel (STKM11A carbon steel pipe for machine structural purposes). Each component is carefully polished by hand by skilled craftsmen, then given high-quality plating treatment to achieve excellent aesthetics and weather resistance.
●Silencer
The φ67×300 silencer, which produces a unique and exhilarating racing sound, has a complete double-layer internal structure, allowing for maximum sound reduction with minimal exhaust resistance.
Furthermore, its lightweight and compact body possesses high rigidity and excellent resistance to vibrations caused by harsh operating conditions.
●Silencer Outer Cover Lineup
The outer cover material is available in the following three types:
・Aluminum alloy A6063S
・Stainless steel SUS304/mirror finish
・Titanium TP270
●Component Structure
This is a full exhaust muffler consisting of a total of five parts: "four front exhaust pipes (from the engine to the manifold)" and "one tail ASSY (from the manifold including the silencer)."
●Mounting Condition
It is fixed to the vehicle body at two points: the engine exhaust port and the tail stay.
When mounting to the engine exhaust port, use the free flange (exhaust holder) included with this product.
※Exhaust gaskets are not included, so you will need to prepare them separately.
●Regarding Silencer Structural Requirements
The RPM-4in2in1 F-TYPE allowed for the attachment and detachment of the inner silencer built into the silencer for race use and repair purposes. However, many users would drive with the inner silencer removed on public roads, which went against the original intention. Therefore, RPM now welds and fixes the inner silencer in place.
※Sound volume adjustment and back pressure adjustment are not possible in the new shipping state.

■Compatible Models
HONDA
CB400SF STD (NC31)
※Not compatible with Ver.R and Ver.S

■Specifications
Silencer Cover: Stainless Steel
Exhaust Pipe: Steel Plating
Fitting Type: Full Exhaust
Silencer Size: φ67×300
Oil Change: 〇
Oil Filter Change: ×
Tandem: 〇
Center Stand: ×
Road Legal: 〇
Proximity Exhaust Noise Value: 99db

■Notes
※Only the muffler is for sale. The vehicle in the image is for installation reference.
※Images are for illustration purposes only. May include products of different sizes or colors.
※Product design and specifications are subject to change without notice. Thank you for your understanding.
※As this product is made to order, cancellations after ordering are not possible.
※As this is a made-to-order product, it may take some time for delivery. Also, the manufacturer may discontinue or change specifications without prior notice. Please be aware of this in advance.