Feature●NOTE: Some ratios offered at reduced price due to small gear in set not being drilled and/or lightened. See Installation Tips for details●Lightweight design reduces rotating weight which is ideal for limited power such as crate engines●REM polished surface reduces friction and extends gear life●Constructed from high strength 8620 alloy steel which allows the use in high HP cars with bigger tires●Quick change gears have crown shaved profile teeth for maximum contactDescription