b16a pistons or b18c5 pistons which is better?
they are close, but i would choose b18c5 simply because of the ceramic coating that they have to reduce friction. but if your on a budget, the b16 pistons will work just as well.
The b16a pistons have a slightly larger dome than B18c5 (US ITR) pistons. But the ITR pistons have a moly coating on the skirt to reduce friction. You can always get the B16a pistons coated as well. SWAIN does this I believe.
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