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Forged Racing Piston 3.57" (90.68mm)

Forged racing piston for the 6 bolt crank B20/30 engine -73. Virtually indestructible. For the serious engine builder only, these require a .070" overbore to 3.57" (90.68mm). That works out to 2067cc for a B20 and 3100cc for a B30. That's a 80cc increase for the B20 and 120cc increase for the B30 and without using an expensive head gasket. Forged pistons do not have the wrist pin offset like stock pistons do, so they tend to make a little knocking noise at idle, especially when cold. We supply our pistons with super strong lightweight tool steel wrist pins and spiralocks. Rings sold separately.

This product was added to our catalog on Wednesday 08 September, 2010.
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