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Heat treat
Stepping up from the 12 spline stub shaft this is your heavy duty go big or go home set up
Heat Treated 4340 chromoly stub shaft
Why settle for anything less than the INDUSTRY'S BEST
Machined from aircraft grade 7075-T6 material
12 BOLT CHEVY 35 SPLINES BOOT KITS Heat treat12 BOLT CHEVY 35 SPLINES Minimum weight Maximum stiffness Maintenance free Increased traction Improved reliability Heat treated chrome moly steel A spool is essential equipment for every competition vehicle. A summers Brothers spool reduces driveline breakage by eliminating the differential's fragile spider gears and its weak cast iron case. In addition, a pool improves performance by locking together the axles to provide a constant flow of torque to
