1. Introducció
This document provides essential information for the proper installation, operation, and maintenance of your Yoshimura Slip-On Exhaust System. This system is designed to offer powerful response and a deep sound, while complying with new exhaust gas regulations due to an integrated catalyst in the tailpipe. Please read this manual thoroughly before installation and use to ensure safety and optimal performance.
2. Informació de seguretat
Always prioritize safety during installation and operation. This product is a government-certified muffler. Adhere to all local regulations regarding vehicle modifications.
- Ensure the engine is cool before beginning installation to prevent burns.
- Utilitzeu equips de protecció individual adequats, inclosos guants i protecció ocular.
- Perform all work in a well-ventilated area.
- Refer to your motorcycle's service manual for specific torque specifications and procedures.
- After installation, check for any exhaust leaks and ensure all fasteners are securely tightened.
Nota important: The use of the genuine optional center stand is possible with this product.
3. Producte acabatview i Característiques
The Yoshimura Slip-On Exhaust System is engineered to enhance your motorcycle's performance and acoustic profileLes característiques principals inclouen:
- Rendiment millorat: Designed for powerful engine response.
- Distinctive Sound: Delivers a deep and resonant exhaust note.
- Government Certified: Complies with exhaust gas regulations, including a catalyst in the tailpipe.
- Material: Constructed with durable stainless steel for the tailpipe and silencer.
- Compatibilitat: Compatible with Honda CB400SF/SB Revo models from 2008-2013 and CB400SF/SB models from 2014-2022.

Figure 3.1: Yoshimura Slip-On Exhaust System (Stainless Steel) installed on a Honda CB400SF.

Figure 3.2: Detail of the exhaust pipe, featuring "High Flow Magic" engraving, indicating advanced flow design.

Figure 3.3: The Yoshimura Slip-On exhaust silencer, showcasing la seva construcció i disseny d'acer inoxidable.
4. Instal·lació
The Yoshimura Slip-On Exhaust System is designed for straightforward installation. It replaces only the rear section of the exhaust, making the process simpler than a full system replacement.
4.1 Comprovacions prèvies a la instal·lació
- Verifiqueu que tots els components siguin presents i no estiguin danyats segons la llista d'embalatge.
- Ensure your motorcycle is on a stable stand and the engine is completely cool.
- Gather necessary tools (wrenches, sockets, torque wrench, etc.).
4.2 Passos d'instal·lació
- Loosen and remove the bolts securing the stock muffler to the exhaust pipe and the hanger bracket.
- Carefully remove the stock muffler.
- Position the new Yoshimura slip-on muffler, aligning it with the existing exhaust pipe and hanger bracket.
- Secure the slip-on muffler to the exhaust pipe and the hanger bracket using the provided hardware. Do not fully tighten yet.
- Adjust the muffler's position for optimal alignment and clearance.
- Once aligned, tighten all bolts to the manufacturer's specified torque settings.
- Nota: A gasket is not required for this installation.
4.3 Comprovació posterior a la instal·lació
- Start the engine and check for any exhaust leaks, especially at the connection points.
- Listen for any unusual noises.
- Allow the engine to reach operating temperature, then shut it off and re-check all fasteners for tightness after the system has cooled.
5. Característiques de funcionament
The Yoshimura Slip-On Exhaust System is designed to provide a noticeable improvement in both sound and engine response. The deep, rich tone is a characteristic of Yoshimura's engineering. The system is government-certified, ensuring compliance with noise and emission standards for street use.

Figure 5.1: Dyno test results for Honda CB400SF (2018 model) comparing Yoshimura Cyclone exhaust performance against the standard (STD) exhaust, showing power (PS) and torque (kg-m) across RPM range.
6. Manteniment
Proper maintenance will ensure the longevity and continued performance of your Yoshimura exhaust system.
- Neteja regular: Clean the exhaust system regularly with mild soap and water to remove dirt, grime, and road salt. Avoid abrasive cleaners or harsh chemicals that can damage the finish.
- Inspecció: Periodically inspect the exhaust system for any signs of damage, cracks, loose fasteners, or discoloration. Address any issues promptly.
- Comprovació de fixació: Re-check the tightness of all mounting bolts and clamps periodically, especially after the first few rides, as heat cycles can cause fasteners to loosen.
- Canvis d'oli i filtre: This exhaust system allows for both oil and oil filter changes without removal.
7. Solució De Problemes
If you encounter any issues with your Yoshimura Slip-On Exhaust System, consider the following common troubleshooting steps:
- Fuites d'escapament: If you detect exhaust leaks (often indicated by a puffing sound or black soot around joints), re-check the tightness of all clamps and bolts. Ensure the connection points are clean and properly seated.
- Sorolls inusuals: Rattling or buzzing sounds may indicate loose components. Inspect all mounting hardware and ensure nothing is vibrating against the exhaust system or motorcycle frame.
- Problemes de rendiment: While unlikely with a slip-on, if you experience significant performance degradation, ensure the installation is correct and there are no leaks. Consult a qualified mechanic if issues persist.
For further assistance, please contact Yoshimura customer support.
8. Especificacions
| Nom del model | 110-458-5450 |
| Marca | Yoshimura |
| Model de vehicle | EBL-NC42 ('08-'13) / 2BL-NC42 (CB400SB: '14-'22, CB400SF: '14-'22) |
| Model de motor | NC42E |
| Exhaust Pipe / Collector | - (Slip-on system, uses stock collector) |
| Tailpipe Material | Acer inoxidable |
| Silencer Material | Acer inoxidable |
| Government Certified | Yes (Exhaust Gas Test Result Certificate Included) |
| Proximity Exhaust Noise | 91 dB |
| Acceleration Noise | 81 dB |
| Gasket Required | No |
| Oil Change Possible | Sí |
| Oil Filter Change Possible | Sí |
| Pes del producte | 3.42 kg (7.54 lliures) |
| Dimensions del paquet | 68.8 x 18 x 15.1 cm |
9. Garantia i Suport
Yoshimura Muffler 2-Year Warranty: All JMCA compliant Yoshimura exhaust systems (excluding racing cyclons) come with a quality warranty. If a defect occurs within two years of purchase under normal use, following the precautions in the instruction manual, repairs will be performed free of charge.
Important: Warranty service will not be provided for mufflers that have been illegally modified.
For customer support or warranty claims, please contact your authorized Yoshimura dealer or visit the official Yoshimura weblloc per obtenir informació de contacte.
Official Yoshimura Japan Weblloc: www.yoshimura-jp.com