Motorcycle & Scooter Exhaust Baffles, Exhaust Packing & Exhaust Wool. Exhaust Baffles for Two Stroke & Four Stroke Motorcycles. Exhaust Baffle Wool Exhaust Baffle Packing in Bags or Sheets. Wrap your baffles up in exhaust wool or packing to reduce noise levels. Exhaust Muffler Reducers that will fit header exhaust pipes or downpipes to odd sized silencers or mufflers from 45mm down to 37mm.