The Mittler Bros. Inner Lineup Blocks (Dana 60) are precision-machined round tube alignment rings used in rear-end narrowing applications. Designed for Dana 60 housing ends, these inner blocks slip over the jig shaft and seat inside of the trimmed rear-end housing to ensure accurate, square, and true reinstallation of the housing ends.
Sold as a pair, these 3.812″ inner blocks are included in both Mittler Bros. Rear-End Narrowing Kits and are also available here separately for builders who need replacements or are assembling a custom narrowing setup. Made in the USA.
