UK customers - Please note this silencer is not road legal in the UK and will be marked Not for Road Use. Black Widow Exhausts Performance Motorcycle Exhaust Silencer Kit Fits : Kawasaki Ninja ZX4-R 2023, 2024, 2025 models Ninja ZX4-RR 2023, 2024, 2025 models - Designed to fit your standard OEM down pipes and our own Black Widow Downpipes. - See kit photo for included parts. - Silencer Material : 304 Grade Black Stainless Steel - Silencer Body Length excluding tips : 400 mm - Silencer Code : BN40V - Silencer fitted with a removable baffle / DB killer. - See our Silencer Specifications Tab for length noise levels. - 2 Year Black Widow Unlimited Mileage Warranty.
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