SC-Project Full Exhaust System 4-1 for Honda CB650R (2021-2023) – Performance & Style Upgrade
Enhance your Honda CB650R with the SC-Project Full Exhaust System 4-1 featuring the SC1-S Carbon Fiber Muffler. Engineered for superior performance, lightweight design, and aggressive aesthetics, it’s the ultimate upgrade for street-legal rides.

Performance Boost & Design Excellence

• Full Exhaust System 4-1 – Optimized for power and torque across the rev range.

• Headers Material – Premium Stainless Steel AISI 304 for durability and corrosion resistance.

• Body Material – Carbon Fiber / Titanium for a lightweight, high-performance build.

• End Cap Material – Carbon Fiber with Twill finish for sporty aesthetics.

• Frame Attachment – Precision bracket for secure installation.

• Lambda Probe – Fully compatible with original system.

• Street Legal – EC & TUV approved, EURO 5 homologated.

• Weight Reduction – SC System 6 kg vs Stock 9.65 kg for improved rideability.

• Power & Torque Gains – +1.2 hp @ 10,500 rpm, +0.8 Nm @ 10,500 rpm.

Kit Includes

• Full 4-1 exhaust system with stainless steel AISI 304 pipes

• SC1-S Slip-On Muffler (Carbon or Titanium edition)

• Springs and mounting screws

• SC-Project Stickers

• 24-Month Official SC-Project Warranty

• Homologation Card

Engineering & Technology
Developed with MotoGP and SBK World Championship teams, the SC-Project full exhaust system ensures top-tier performance and style. CNC-machined bushings allow precise coupling, easy installation, and optimal system efficiency. Pipes of variable dimensions provide enhanced torque and maximum power throughout the rev range.

SC1-S Muffler

• Compact and modern design for a minimalistic look.

• Carbon Fiber Twill end cap with strong character, seamlessly matching Honda CB650R’s sporty profile.

• Metallic exit section designed for aesthetic integration.

• Euro 5 homologated for street legality.