Proven 30-spline Marlin Crawler Design: 2-time National Formula Toy Champion and World-Record 6-time King Of the Hammers Top 25 finisher!
Kit includes everything you need to convert your rear output shaft to our massively oversized 30-spline Chromoly shaft:
Includes everything needed to install: Bored & oversized transfer case tail housing, oil pump, and speedometer gear, new front output drive hub, oversized bearing, “4-30” HD 30-spline flange, and chromoly 30-spline output shaft with matching flange nut. It fits any style RF1A gear drive transfer case, top or forward shift, 21- or 23-spline, stock gears or aftermarket gears.
This product requires a refundable core charge on your stock tail-housing.