When done correctly cryogenic tempering boosts tensile strength, toughness and dimensional stability of metals. We have had outstanding success tempering engine components and transmissions to increase life and durability.
"Cryogenic processing is currently in use in every form of racing imaginable. It is seen in virtually every class of NASCAR racing, IRL, CART, NHRA, IHRA, SCCA, IMSA, and ARCA, not to mention tractor pulls, go-carts, motorcycles, boats, and even lawn mower racing. Controlled Thermal Processing (CTP) has even done a fair number of axles for soap box derby cars.
Over half of the cars competing at any given NASCAR Winston Cup race run parts that are cryogenically treated by CTP alone. Cryogenic processing can have a positive affect on virtually every engine, transmission, and drive line part, as well as many chassis parts."
Heat Treating Progress magazine November 2001 Volume 1 Number 6