Your diaphragm is essential, like many other components of your engine, so it is important to ensure that it is dense and fully functional. With this precisely cut piece of gasket material, you can easily close your diaphragm and drive away with the knowledge that it does not fail prematurely.
This membrane pack fits Aprilia models such as Sonic, SR 50 with horizontal Minarelli engines and all the way around to the Keeway Matrix and Yamaha Jog R. If you drive with the Minarelli block, the odds are that this pack is the case for you - however, we recommend that you ensure Make sure it fits your engine with a guarantee by looking under the "Fits" box, further down the page and confirm that your scooter or its engine is actually mentioned.
According to the scooter manufacturers, one gasket between the block and the diaphragm is enough to close tightly, as both studs and diaphragm are vulcanized and therefore in theory end tightly. We recommend that you add two pieces to the basket as this way you can secure a 100% dense membrane by putting a gasket on both sides of the membrane, or having one lying as a spare, for another good time.