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aftermarket exhaust

  1. Gen 4: 2011-2015 ZX-10R Stock exhaust question

    The ZX-10R
    Hello All, I don't think my question has been asked before so here it goes. Back Story: Last night I removed that cat on my bike and replaced with a Akrapovic mid pipe and kept the stock exhaust. What's happened is now the bike is loud as s**t. I expected it to be loud but not THAT loud. My...
  2. Werkes USA GP ZX10R Slip-On Exhaust

    Riders Discount
    From the makers of the original fender eliminator kit, Competition Werkes brings you the Werkes USA GP Exhaust. Fabricated entirely from CNC-cut corrosion-resistant 304 stainless steel and precision welded, the Werkes GP exhaust looks like no other slip-on muffler on the market. A tapered...