| 摘要 |
An adjustment plate(13) comprising two screwed together rotatable discs with holes can by twisting be opened and closed. It is insignificant if the holes are round, oval or angular. The range of application is suitable especially for all Supertrap and original Harley Davidson motorcycle silencers. The device can be used with exhaust systems which have a similar construction of baffle plates. With slight adjustment the device can be used for a wide variety of silencers.
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