Sonnax Premium gear 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 (-150°F) 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.
I run a Sonnax 1.80 straight cut gear set and have had no problems or issues, plan on purchasing another real soon for another car we are putting together. Thanks Sonnax for the reliability and durability in your product.R. Merrill
Brooklyn Park, MN
Contact a Sonnax Parts Distributor.