These Rods will require you to use Custom Pistons setup for a 2mm Longer Connecting Rod
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This is Manley's new H-Tuff H-Beam rod. This is a stronger beam construction, allowing you to make more power safely on an H-Beam than before. This H-Beam's construction can handle more power without adding considerable weight to the design. This rod bridges the gap between the previous h-beam design and the turbo-tuff I-Beam design which is considerably more expensive.

This is a great option for someone who is worried about maxing out the hp rating of the h-beam but not looking to step all the way up to an I-Beam.
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These Rods will require you to use Custom Pistons setup for a 2mm Longer Connecting Rod
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Manley "H Tuff" Beam connecting rods are manufactured from 4340 forgings to the same exacting standards developed and approved by our original equipment customers. There is a vast difference in quality between a Manley "H" Beam and the "other" inexpensive H-Beams on the market. Weight matched to +/- 1.5 grams. Perfectly round big and small ends. Bend and twist is tightly controlled.