Wearing parts for motorcycles: Greater safety, greater biking fun. A huge choice of wearing parts for motorcycles are available in the Louis Online Shop, from replacement pistons through to spark plugs: Gaskets, batteries, filters, chain and sprocket kits, clutch sets, brake discs and pads, seat covers, engine and chassis parts. In fact, everything, except tyres, that one day has to be replaced on your motorbike, scooter or quad. Do your trusty machine a big favour and give it new parts when it needs them. You're sure to reap the benefit in terms of improved performance, long service and high resale value. The Louis Bike Database shows you which wearing parts are suitable for your machine.