A continuously variable transmission comprising a rotational input , a shaft coupled to the rotational input, the shaft having an axis of rotation , a variator including a nested endload assembly including two chambers configured to develop a clamping force on components of the variator, the nested endload assembly having: a housing , a backing plate with splines formed in its periphery which are engaged with splines of the housing such that the backing plate is constrained from rotation relative to the housing, a piston positioned adjacent the backing plate and cooperating with the backing plate to define a first chamber for receiving pressurized fluid to act on the piston, and a load plate engaged with the backing plate, and an input race engaged with the piston to be acted upon by the piston when the piston is acted upon by pressurized fluid in the first chamber, the input race cooperating with the load plate to define a second chamber for receiving pressurized fluid to act on the input race, wherein the housing has a first portion having a first diameter and formed to include at least one first spline and a second portion having a second diameter and formed to include at least one second spline , the diameter of the first portion is larger than the diameter of the second portion, and the backing plate includes a plurality of third splines engaged with the at least one second spline such that the backing plate is constrained from rotation relative to the housing. a rotational input , a shaft coupled to the rotational input, the shaft having an axis of rotation , a variator including a nested endload assembly including two chambers configured to develop a clamping force on components of the variator, the nested endload assembly having: a housing , a backing plate with splines formed in its periphery which are engaged with splines of the housing such that the backing plate is constrained from rotation relative to the housing, a piston positioned adjacent the backing plate and cooperating with the backing plate to define a first chamber for receiving pressurized fluid to act on the piston, and a load plate engaged with the backing plate, and an input race engaged with the piston to be acted upon by the piston when the piston is acted upon by pressurized fluid in the first chamber, the input race cooperating with the load plate to define a second chamber for receiving pressurized fluid to act on the input race, wherein a housing , a backing plate with splines formed in its periphery which are engaged with splines of the housing such that the backing plate is constrained from rotation relative to the housing, a piston positioned adjacent the backing plate and cooperating with the backing plate to define a first chamber for receiving pressurized fluid to act on the piston, and a load plate engaged with the backing plate, and an input race engaged with the piston to be acted upon by the piston when the piston is acted upon by pressurized fluid in the first chamber, the input race cooperating with the load plate to define a second chamber for receiving pressurized fluid to act on the input race, the housing has a first portion having a first diameter and formed to include at least one first spline and a second portion having a second diameter and formed to include at least one second spline , the diameter of the first portion is larger than the diameter of the second portion, and the backing plate includes a plurality of third splines engaged with the at least one second spline such that the backing plate is constrained from rotation relative to the housing. <EOS>