SC Project 4-1 Stainless steel full Exhaust System, with SC1-M Carbon fibre Exhaust- Honda CBR650R (2019-20)

SC Project 4-1 Stainless steel full Exhaust System, with SC1-M Carbon fibre Exhaust- Honda CBR650R (2019-20)

Upgrade your Honda CBR650R with the SC Project 4-1 Stainless steel full Exhaust System, with SC1-M Carbon fibre Exhaust- Honda CBR650R (2019-20). This complete 4-1 system combines a carbon fibre SC1-M muffler with SAE 304 stainless steel headers. It delivers +1.7 hp at 11500 RPM and +3.7 Nm at 7500 RPM. Moreover, it reduces the exhaust weight by 2.5 kg, from 8.5 kg to only 6 kg. Visit our website for more parts and accessories of Honda.

Complete 4-1 Exhaust System

The system uses a 4-1 full exhaust configuration designed specifically for the Honda CBR650R. SC-Project developed the system through extensive research and development work.

The full system replaces the original exhaust assembly with a complete performance-focused setup. Furthermore, its variable-dimension pipe design helps improve performance across the engine’s operating range.

Performance and Torque Improvement

The SC-Project system delivers a claimed +1.7 hp at 11500 RPM. It also produces +3.7 Nm of torque at 7500 RPM.

The torque gain adds to the system’s performance-focused character. In addition, SC-Project designed the headers with variable dimensions to support improvements in both torque and maximum power.

2.5 kg Weight Reduction

The complete exhaust weighs only 6 kg compared with the stock system’s 8.5 kg.

Therefore, the system saves 2.5 kg of exhaust weight. This lighter construction can also support improved overall rideability by reducing the weight carried by the motorcycle.

SC1-M Carbon Fibre Muffler

The system uses the compact SC1-M carbon fibre muffler. SC-Project developed the SC1-M as a modern evolution of its iconic SC1 design.

Its short and compact shape suits riders who prefer a minimal exhaust profile. Moreover, the carbon fibre construction gives the muffler a sporty appearance that complements the CBR650R.

Carbon Fibre Twill End Cap

The SC1-M features a distinctive carbon fibre Twill end cap. Its sharp design creates a strong visual contrast with the metallic outlet section.

The outlet itself has a metallic finish designed to integrate with the sporty carbon end cap. As a result, the muffler gives the CBR650R a cleaner and more modern appearance.

SAE 304 Stainless Steel Headers

The exhaust uses SAE 304 stainless steel headers. SC-Project designed the pipes with variable dimensions to support the system’s performance characteristics.

Furthermore, the headers form the 4-1 configuration and work with the complete exhaust system. This design helps balance performance, durability, and weight.

Original Lambda Probe Compatibility

The system is designed to accommodate the original lambda probe. This allows the exhaust system to retain the motorcycle’s original lambda sensor.

In addition, the system uses CNC-machined bushings turned from solid material. These components provide precise couplings and help make installation easier.

dB-Killer and Euro 4 Approval

The SC1-M exhaust includes a dB-killer. Therefore, the system combines a sporty exhaust design with controlled sound output.

Most importantly, the complete system carries EC/ECE type approval and is Euro 4 street legal. A type approval certificate is also included.

The kit also includes the catalyst required for Euro 4 homologation. As a result, the system retains its stated road-approved configuration.

MotoGP and SBK Development Experience

SC-Project developed this exhaust using experience from research and development carried out alongside major MotoGP and SBK World Championship teams.

That racing background influences both the technical design and visual character of the system. However, this version combines that racing-inspired development with Euro 4 road approval.

Premium Construction and Easy Fitment

The system uses a dedicated bracket mounting system. CNC-machined bushings provide accurate couplings throughout the exhaust assembly.

Moreover, the complete design focuses on precise fitment and reliable integration with the Honda CBR650R. The result is a complete exhaust upgrade with a clean and purposeful appearance.

A Complete Performance Upgrade for the CBR650R

The SC Project 4-1 Stainless steel full Exhaust System, with SC1-M Carbon fibre Exhaust- Honda CBR650R (2019-20) combines a complete 4-1 layout with a compact carbon fibre SC1-M muffler.

It delivers +1.7 hp and +3.7 Nm, while saving 2.5 kg compared with the stock system. Overall, the system offers a balanced combination of performance, lightweight construction, modern styling, and Euro 4 street-legal approval.

Weight	9 kg
Dimensions	55 × 33 × 25 cm
Country of Origin	Italy