✨Yoshimura RS-12 Exhaust 225850S321 Honda CRF450R/RX 21-24 Full System
The Yoshimura RS-12 Stainless Full Exhaust System (225850S321) is the premier performance upgrade for the 2021–2024 Honda CRF450R and CRF450RX. Developed alongside championship-winning riders, this RS-12 full exhaust delivers race-proven power gains, smoother throttle response, and unmatched durability. Designed with proprietary resonator technology and a precision stainless cast manifold, the RS-12 exhaust system transforms the CRF450R/RX into a sharper, faster, and more controllable motorcycle built for competition.
Trusted by Supercross and Motocross champions, the Yoshimura RS-12 Full Exhaust System increases maximum horsepower by 5% and delivers up to 6.5% more torque across the rpm range. With smoother power delivery that allows riders to stay in a higher gear and reduce fatigue, this system provides a performance advantage on any track. Crafted in the USA, the Yoshimura RS-12 exhaust system brings factory-level engineering and race-winning performance directly to your Honda CRF450R or CRF450RX.
✅ FITMENT
• 2021–2024 Honda CRF450R
• 2021–2024 Honda CRF450RX
➡️ TOP FEATURES
• Proven race-winning RS-12 design used by Sexton & Lawrence
• 5% max horsepower gain & 6.5% torque increase
• One-piece stainless manifold with reinforced 3× stronger flange
• Dual resonator technology for smoother, broader power
• Reduced rider fatigue thanks to improved power delivery
• Designed, developed & manufactured in the USA
• Complete full exhaust system with hardware
❓ FAQ
Does this RS-12 system fit both CRF450R and CRF450RX?
Yes — it is engineered specifically for the 2021–2024 CRF450R and CRF450RX.
Is installation difficult?
No — the system includes full mounting hardware and instructions for a straightforward install.
Does the RS-12 include a spark arrestor?
It does not. This is a race system, but Yoshimura offers optional spark arrestors.
🚀 Experience championship-level exhaust performance and transform your Honda CRF450R/RX with the system trusted by the fastest riders in the world.
Moto-House MX – Choice of Champions – located in Clermont/Montverde, FL. The best motocross shop in Central Florida.
