Quality reproduction engine/exhaust mounting damper for Yamaha motorcycles.
It insulates engine from the frame or in case of XS750 the exhaust from the frame.
Sold individually, but two or four are usually required per motorcycle - please check your manual for details.
1976-80 RD400C /RD400D /RD400E /RD400F /RD400G
1978-79 XS750SE /XS750SF