Yoshimura 228460S520 2025-2026 Honda CRF250R / CRF250RX RS-12 Full Exhaust — Peak Power Gain

Yoshimura — High-Velocity Power Delivery, Uncork the Performance of the New CRF250R

The 2025-2026 Honda CRF250R is built for high-RPM aggression, but the stock exhaust plumbing can often restrict the engine's ability to breathe at the limit. This "choked" feeling translates to a loss of valuable over-rev and throttle response when you're trying to clear high-consequence triples or pull through deep loam. The Yoshimura RS-12 Full System is the ultimate solution, engineered to maximize the volumetric efficiency of the Honda powerplant, delivering a wider powerband and immediate snap off the gate.

Developed through rigorous factory-level testing, the RS-12 utilizes "Factory Quality" precision-machined joints to ensure an airtight 360-degree seal, eliminating the power-robbing leaks common in lower-grade systems. The asymmetrical muffler profile not only manages sound for competition compliance but also provides increased clearance for the rear brake caliper and tire. With its tapered inlet design, the RS-12 shifts the weight of the exhaust forward, complementing the Honda CRF250RX’s nimble handling and making the bike feel lighter and more flickable in technical sections.

• Enhanced Throttle Response: Optimized for the 2025-2026 engine to deliver immediate power delivery and increased over-rev.
• Factory Quality Machined Joints: Precision-engineered connections for a perfect, durable fit and easier maintenance.
• Asymmetrical RS-12 Profile: Maximizes muffler volume while improving ground and brake caliper clearance.
• Matte Carbon Fiber End Cap: Innovative inner-mount design increases durability and simplifies repack intervals.
• PTF Insert System: Patent-pending Precision Taper Fit ring makes it easy to install or remove sound inserts and spark arresters.

Moto-House MX Pro Tip:

The 2025-2026 Honda frame is incredibly precise, and the new exhaust mounting points require exact alignment. When installing your RS-12, do not tighten any bolts fully until the entire system is loosely fitted from the header to the muffler. This allows the "Factory Quality" machined joints to seat perfectly, preventing stress on the exhaust flange and ensuring a leak-free seal for the life of the pipe.

Year	Make	Model
2025 - 2026	Honda	CRF250R
2025 - 2026	Honda	CRF250RX

FAQ Questions

Q) Will this system increase my Honda's horsepower?
A) Yes, the RS-12 is specifically engineered to increase horsepower and torque across the entire RPM range by improving exhaust flow over the stock system.

Q) Does this exhaust include a spark arrester?
A) This system is a closed-course competition exhaust. However, it is compatible with Yoshimura spark arrester inserts (sold separately) via the PTF insert ring.

Q) Is the installation straightforward?
A) Absolutely. Thanks to the precision-machined joints and tapered fitment, the RS-12 is designed for an exact fit on the 2025-2026 Honda chassis with no modifications required.

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