YZ250F 24-26 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler - 231030S320

Yoshimura YZ250F 24-26 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler

Built specifically around what the 2024 YZ250F was capable of, this Yoshimura RS-12 Signature Series full system is a stainless full exhaust paired with an aluminum muffler designed to optimize the updated platform. Yoshimura’s R&D team revised the spec based on dyno and track testing, delivering a purpose-developed system with an aggressive RS-12 profile, smart packaging, and easy sound insert serviceability.

Product Details

• SKU: 231030S320
• Brand: Yoshimura
• Category: Signature Series Exhaust System

Key Features

• Revised RS-12 Signature Series full system developed for the updated 2024 YZ250F platform
• Dyno-tested gains over stock: 2.5% max HP and 2.8% max torque (as tested by Yoshimura)
• Aggressive, asymmetrical RS-12 muffler profile designed to maximize muffler volume for sound management, added clearance, and performance-focused packaging
• Optimized muffler shape with added volume and brake caliper clearance
• Precision machined joints for a superior 360° contact surface to better secure sealing surfaces and support fit, performance, and system life
• Works-look matte carbon fiber end cap with an inner-cap mounted design for improved durability and easier servicing versus common sandwich-mount designs
• Patent-pending Precision Taper Fit (PTF) insert ring for easier installation and removal of sound inserts and spark arresters
• Tapered muffler body inlet design allows the system to be pushed forward to aid weight centralization without sacrificing performance
• Sound level: Volume Insert
• Designed, developed, and manufactured in Chino, California
• Repack kits, optional inserts, and spark arresters available (sold separately)

Fitment & Notes

Fitment: Yamaha YZ250F (model years 2024–2026) as stated in the product title. Sound insert / spark arrester options referenced by Yoshimura include INS-31-K, INS-30-K, and SA-19-K (availability and inclusion vary; sold separately unless noted).