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The rocker arms that we sell now are guaranteed for life against breaking. We have little to no issue at all with durability. For added insurance when using high spring pressures we suggest buying them from us with the Cryo Treating.

Kevin...That is awesome! My spring pressures aren't crazy and Radar Lechtenberg looked them over when he ported my heads. He thought they were very nice! Thanks for a good product!

Need your rear end checked out? Contact Grizzly!!