Tailshaft Tactics
JB Conversions
The NP 231 Slip-Yoke Eliminator Kit from JB Conversions features a new, heavy-duty, 32-spline mainshaft with an 18-percent-larger spline diameter and a 54 percent increase in torque capacity. The new shaft can accommodate as much as a 1-ton output yoke to match larger rear axle assemblies and is manufactured to New Venture Gear specifications. The kit also includes a custom one-piece rear bearing housing that is chemically pressure-treated to ensure against leaks.
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