Keith Black 390 hypereutectic piston set is .005 oversize and is for 3.438 bore. Pistons have a compression of 9.0:1.
**Note:Run engine at moderate speeds for at least 500 miles avoiding excessive running in lower gears in order to properly break-in new pistons and rings.
Fits:
FL 1941-1977
Fx 1971-1977
UOM: SET
Country Of Origin: MEXICO
Accessory Items:
16-0622 – Ring-O-Matic Ring Compressor Tool Kit
16-0029 – Connecting Rod Clamping Tool
60-0167 – Cylinder Boring Service
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Our policy lasts for thirty days. If it's been more 30 days since you've purchased your item, we unfortunately can't give you a full exchange or refund.
You are able to return a product in the event that it is not used and in the same condition the day you received it. The item must be in the original packaging.
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