Sonnax Premium gears sets are a big step up from standard case-hardened and tempered gears. Our top-quality racing gear material (SAE9310) combined with a freeze-tempering process (-150ÁF) result in gears with improved grain structure and stability which are tougher and more wear resistant. Each gear set includes a flanged sun gear and a ring gear. The flange is machined from billet, not a stamped piece. The flange is broached and matched to the sun gear for a precise press fit that does not require welding.

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