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    • Home / Products / M4 Exhaust 2015-2026 Yamaha R1 Black RM1 Half System
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator
    M4 Exhaust 2020 Yamaha R1 Blk RM1 CAT Eliminator

    M4 Exhaust

    YA9942-CE

    M4 Exhaust 2015-2026 Yamaha R1 Black RM1 Half System

    $ 680.00

    • Black RM1 Half System

      • Stainless Steel, Ceramic Coated Black Catalytic Converter Eliminator
      • Stainless Steel, Ceramic Coated Black RM1 Canister
      • Carbon Fiber End Cap
      • Saves 12 lbs Compared to Stock
      • Q7 Quiet Insert Available but Sold Separate

      Note: ECU re-flash required when removing the catalytic converter on 2015-2026 R1.

      Does not meet emission requirements for street or highway use.

    Because One Upgrade Is Never Enough