R44 BMW S58 70mm Exhaust Clamping Bush Pipe Sleeve for BMW G80 M3, G82 M4 & G87 M2New 70mm (2. 75") Heavy Duty Stainless Steel Exhaust Clamp Connector Pipe with Clamps. This sleeve is the perfect option when re installing your original exhaust after having previously installed an aftermarket exhaust. Make reverting your car's exhaust system back to standard easy! Check original pipe diameter to ensure it meets the 70MM size of this product. Key BMW models this works great for: BMW G80 M3 Saloon (2021+) BMW G81 M3 Touring (2023+)