YZ450F 2026 RS-12 Stainless Titanium Full Exhaust, w/ Aluminum Muffler - 234850S720

YZ450F 2026 RS-12 Stainless Titanium Full Exhaust, w/ Aluminum Muffler

Designed for riders who want a true performance upgrade without giving up durability, the Yoshimura RS-12 Hybrid Full Exhaust for the 2026 Yamaha YZ450F pairs a stainless steel header with a titanium/aluminum RS-12 muffler. Yoshimura reworked the header connection with a machined joint to make installation and removal significantly easier—especially for racers and frequent tuners—while the resonator-equipped design helps deliver strong, usable power across the rev range.

Product Details

• SKU: 234850S720
• Brand: Yoshimura
• Category: Signature Series Exhaust System

Key Features

• Hybrid construction: stainless steel header for durability with a titanium/aluminum RS-12 muffler to reduce weight versus stock
• Redesigned header pipe connection with a machined joint for easier install and uninstall
• Volume-specific header resonator designed to help place power where it’s needed
• Muffler resonator integrated into the front cap to enhance power characteristics
• Engineered to meet 109 dB sound standards with optional INS-39-K insert (per Yoshimura)
• Sound insert / spark arrester options noted by Yoshimura: INS-32-K (spark arrestor included), INS-39-K, SA-21-K
• Proudly engineered, developed, and built in Chino, California

Fitment & Notes

Fitment: 2026 Yamaha YZ450F (as stated in the product title and source information). Sound level noted: Volume Insert. Optional inserts/spark arrestor options are sold separately unless specified.