The solid input shaft
from Santjer Performance is larger, stronger, and without the inherent lube
port stress concentration weakness of the stock shaft design. It’s able to
deliver these benefits without compromising fluid transfer rate; an issue
common to larger shafts that reduce port diameters for slight strength
increases. Direct hub spline length has also been increased for additional
clutch capacity. Torsion tested in excess of 4000 ft-lbs without failure, the
solid input shaft uses a proprietary heat treatment and ultra-high strength
VAR alloy. Now available in TrackMaster Transmissions, with Solid Shaft ready
Hi5 or ProForce 3D torque converters.

Designed for the transmission builder
Torsion tested in excess of 4000 ft-lbs without failure
High stressed points at fluid ports and sealing ring grooves are
eliminated
1-3/16 diameter 37-tooth involute spline geometry
Cold formed / rolled splines for superior fatigue properties
Uniform material grain flow generated during the forming process
Proprietary heat treatment and ultra-high strength VAR alloy
Increased shaft length for improved torsional dampening
Increased bearing support surface area
Increased direct hub spline length for additional clutch capacity
Ultimate fluid transfer flowrate, to and from the converter with reduced
restrictions common to other large shafts
Comes with pump stator support assembly
Must be used in conjunction with the Hi5 or ProForce 3D multi-disc Solid
Shaft capable converter