Two Brothers S1R Slip-On Exhaust Yamaha R1 / R1M / R1S

The future is here in the form of the Two Brothers S1R Slip-On Exhaust. The business end of this exhaust features an aggressive and lightweight magnesium end cap with a non-stick teflon coating. The exhaust sleeve is made of a 33 million modulus grade carbon fiber which is extremely strong but not overly brittle. Within the muffler body lies TBR’s spiral-wound perforated core technology that produces an exhaust note that Chuck Norris would be proud of. Connecting the S1R exhaust muffler to the OEM exhaust is a connecting pipe made of .035" thick 304 chromium-nickel stainless steel. The high quality of #304 stainless steel can be seen and felt in its lightweight, high rust resistance and a special color transition to a golden amber after a few heat cycles.  All of these features has been track-tested and dyno-tuned to offer you the best overall package for attacking the street and track.

Features:

• Fully-serviceable in the event of damage, routine maintenance or the occasional repack
• Eliminates catalytic converter for increase exhaust flow
• Rubber-lined, natural finished aluminum muffler clamps
• Aerospace high-temp carbon fiber
• Stamped spring-fit inlet
• Optional P1 and PX1 sound inserts available (sold separately)
• Optional anodized bolts kits available (sold separately)
• Made in USA