SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CBR650R (21-23)

SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CBR650R (21-23)

The SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CBR650R (21-23), gives the Honda CBR650R a complete performance-focused exhaust upgrade. It combines SAE 304 stainless steel headers with a titanium SC1-R muffler and carbon fibre end cap. The system also includes a catalyst for Euro 5 homologation. Visit our website for more parts and accessories of Honda

4-1 Full Exhaust System

SC-Project developed this complete 4-1 system through research and development with experience from MotoGP and SBK racing teams. The system uses variable-size pipes to support power and torque across the engine’s performance range.

Moreover, its lighter construction can improve the overall rideability of the Honda CBR650R.

Power and Torque Gains

The system delivers +1 hp at 10000 rpm. It also produces +0.7 Nm of torque at 10000 rpm.

Therefore, the SC-Project system provides measurable performance gains while maintaining its Euro 5 road-legal specification.

SC1-R Titanium Muffler

The exhaust features the SC1-R titanium muffler with a carbon fibre end cap. Its sharp, compact design gives the Honda CBR650R a sporty appearance.

In addition, the end cap uses an asymmetric rhomboidal shape. The hydroformed outlet adds another distinctive detail to the SC1-R design.

SAE 304 Stainless Steel Headers

The headers use SAE 304 stainless steel and feature variable dimensions. This design supports the system’s power and torque characteristics.

Furthermore, SC-Project uses TIG welding for the exhaust construction. CNC-machined bushings provide precise connections and help simplify installation.

Euro 5 Catalyst Included

The system includes a catalyst for Euro 5 homologation. Therefore, it meets the stated requirements for road use.

The exhaust carries EC/ECE type approval and comes with a type approval certificate. It is also street legal and Euro 5 compliant.

Original Lambda Probe Compatibility

The full system accommodates the original lambda probe. This keeps the original sensor compatible with the exhaust configuration.

In addition, the dedicated mounting bracket helps secure the complete system during installation.

Lightweight Performance Design

SC-Project designed the system with weight reduction in mind. The lighter construction can improve the bike’s rideability and handling feel.

At the same time, the titanium SC1-R muffler helps maintain a lightweight performance-focused setup.

High-Quality SC1-R Construction

SC-Project uses TIG welding and high-temperature-resistant sound-absorbing material in the SC1-R muffler.

Moreover, CNC-machined insert bushings support accurate component connections. The titanium body also carries a laser-printed SC-Project logo for a clean finish.

Carbon Fibre End Cap

The SC1-R uses a carbon fibre end cap with an asymmetric rhomboidal design. This detail gives the muffler its distinctive appearance.

The hydroformed outlet also adds a clean and precise finish to the exhaust outlet.

Street-Legal CBR650R Upgrade

The SC Project 4-1 Stainless steel full Exhaust System combines racing-inspired SC1-R styling with road-legal engineering.

The catalyst, Euro 5 compliance, EC/ECE approval, and original lambda probe compatibility make it suitable for approved street use.

Performance-Focused Honda CBR650R Upgrade

The SC Project 4-1 Stainless steel full Exhaust System, with SC1-R Titanium Exhaust- Honda CBR650R (21-23), combines a 4-1 layout with stainless steel headers and a titanium SC1-R muffler.

Overall, it delivers +1 hp and +0.7 Nm of torque while retaining Euro 5 street legality. The SC1-R design also adds a distinctive racing-inspired appearance to the Honda CBR650R.

Weight	9 kg
Dimensions	60 × 35 × 25 cm
Preferred Finish	Carbon Fiber, Titanium
Country of Origin	Italy