QC - Lower Shafts & Couplers
Lower shafts and couplers for quick change rear ends, covering the components that connect the input shaft to the quick change gear set. The range includes standard and heat treated lower shafts, swivel spline shafts and conversion kits, internal and external 10-10 couplers, and related hardware like snap rings and swivel ball washers.
Winters and DMI parts here suit different rear end setups: standard steel lower shafts for regular use, heat treated or titanium shafts for extra strength, and swivel spline versions that allow for u-joint style flex. Conversion kits (including 32 spline options) let you change a shaft's spline configuration, while couplers like the 10-10 Standard or Baby Bulldog Internal connect the shaft into open tube or internal coupler style rear ends.
Pick based on your rear end type (open tube or internal coupler), the spline count required, and whether your application needs the added strength of heat treated or titanium components.
Frequently asked questions
What's the difference between a standard and a heat treated lower shaft?
A heat treated lower shaft, like the Winters 5003, has been hardened for extra strength and durability compared to the standard steel version (5003-02), which suits less demanding use.
What does a swivel spline conversion kit do?
A swivel spline conversion kit lets the lower shaft flex like a u-joint, which helps accommodate movement in the drivetrain. Winters offers these in different spline counts, including 32 spline options.
What's the difference between an internal and standard 10-10 coupler?
An internal coupler, such as the DMI Internal 10-10 Coupler, fits inside the tube for a cleaner setup, while a standard coupler like the Winters 5987 is used on open tube quick change rear ends.
Why choose a titanium main shaft over steel?
A titanium shaft, like the Winters 61903T, is used where reducing rotating weight matters, though steel shafts remain the more common standard option.
