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After you place your order on this site, we will contact you to confirm your order details prior to payment being made. All orders will be processed and fulfilled by one of our authorised dealers. Rollies Speed Shop Distribution is a wholesale business and does not sell directly to the general public. For more info see the Purchasing Information page.
Cylinder hold down nuts are an effective way to keep the cylinders in place when the heads are removed from the engine. This is particularly useful when installing the second cylinder over the piston and rings after the first cylinder has been installed. It is also advantageous to have the cylinders secured when rotating the crankshaft for other work. In any case, even a slight rocking of the cylinder can damage the base gasket or cause a cylinder to lift entirely off the cases. These new JI MS® Hold Down Nuts have different threads at each end. One end fits Twin Cam® models, while the other end works with M8™ engines.
MFR PART No: 5809
ROLLIES PART No: JM-5809
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