A constant velocity joint boot assembly, comprising: a boot can having a first end portion connectable to an outer race and a second end portion cantilevered from said outer race, said second end portion having an angled planar portion extending from said first end portion and a crimp head wherein said crimp head curls under said planar portion to define a hollow portion; a boot having an upper slope region, a concave region and a boot clamp region, each of said regions having a range of thicknesses wherein said range of thicknesses constantly decrease from said upper slope region, through said concave region to said boot clamp region, wherein said boot clamp region is defined by a boot first inside surface planar portion, a boot inside surface first angled transition, a boot second inside surface planar portion, a boot third inside surface planar portion co-planar with said boot second inside surface planar portion, a boot inside surface second angled transition and a boot end portion, wherein said boot comprises a boot stopper in said upper slope region, said boot stopper located in an outside boot surface that is adjacent a boot can straight portion, said boot stopper having a radially inward step that reduces the thickness of the boot; a sleeve having a first end portion connectable to an inner surface of an inner race with complementary splines, and a second end portion extending axially away from said inner race, said second end portion having a sleeve first planar portion complementary to said boot first inside surface planar portion, a sleeve first angled transition complementary to said boot inside surface first angled transition, a sleeve second planar portion complementary to said boot second and third inside surface planar portions (L41, L42), and a sleeve second angled transition complementary to said boot inside surface second angled transition; and a clamp located over said boot clamping region characterized in that a centerline (Y-Y) of said clamp which divides the clamp in the center of its axial length, unequally divides said sleeve second planar portion into two portions complementary to said boot second and third inside surface planar portions (L41, L42). a boot can having a first end portion connectable to an outer race and a second end portion cantilevered from said outer race, said second end portion having an angled planar portion extending from said first end portion and a crimp head wherein said crimp head curls under said planar portion to define a hollow portion; a boot having an upper slope region, a concave region and a boot clamp region, each of said regions having a range of thicknesses wherein said range of thicknesses constantly decrease from said upper slope region, through said concave region to said boot clamp region, wherein said boot clamp region is defined by a boot first inside surface planar portion, a boot inside surface first angled transition, a boot second inside surface planar portion, a boot third inside surface planar portion co-planar with said boot second inside surface planar portion, a boot inside surface second angled transition and a boot end portion, wherein said boot comprises a boot stopper in said upper slope region, said boot stopper located in an outside boot surface that is adjacent a boot can straight portion, said boot stopper having a radially inward step that reduces the thickness of the boot; a sleeve having a first end portion connectable to an inner surface of an inner race with complementary splines, and a second end portion extending axially away from said inner race, said second end portion having a sleeve first planar portion complementary to said boot first inside surface planar portion, a sleeve first angled transition complementary to said boot inside surface first angled transition, a sleeve second planar portion complementary to said boot second and third inside surface planar portions (L41, L42), and a sleeve second angled transition complementary to said boot inside surface second angled transition; and a clamp located over said boot clamping region characterized in that a centerline (Y-Y) of said clamp which divides the clamp in the center of its axial length, unequally divides said sleeve second planar portion into two portions complementary to said boot second and third inside surface planar portions (L41, L42).