Black Widow Exhausts Motorcycle Exhaust Downpipes Headers Fits : Kawasaki Ninja ZX4-R 2023, 2024, 2025 models Ninja ZX4-RR 2023, 2024, 2025 models - Accepts your original Lambda (O2) sensors keeping your bikes engine management system, so no changes or modifications are required to your bike. - Designed to fit the OEM silencer and our own Black Widow silencer kits - Material : 304 Grade Stainless Steel. - No fault codes will appear when you install our system. - 2 Year Black Widow Unlimited Mileage Warranty.
eBay