An assembly (102; 200, 204) comprising: a spring element having a longitudinal axis and extending longitudinally between opposing first and second ends; a first end member disposed in operative engagement with said spring element along said first end; a second end member disposed in operative engagement with said spring element along said second end; a sensing device including an outer surface with a cross-sectional dimension and being secured in a predetermined position along one of said first and second end members (234, 236), said sensing device operative to transmit at least one of sound, pressure, light and electromagnetic waves toward a distal surface and receive said at least one of said sound, pressure, light and electromagnetic waves reflected off of said distal surface to at least partially sense at least one of acceleration, pressure, temperature and height conditions of said assembly (102; 200, 204); and a jounce bumper supported along said one of said first and second end members (234, 236) in spaced relation to said distal surface and at least partially covering said sensing device, said jounce bumper including a bumper body (286; 286'; 286") including a mounting end, a distal end, and an outer surface extending peripherally about said bumper body (286; 286'; 286") between said mounting and distal ends (288, 290), and said bumper body (286; 286'; 286") including a sensing passage surface (300; 300'; 300"; 300A) that at least partially defines a sensing passage (302; 302'; 302"; 302A) extending through said bumper body (286; 286'; 286") between said mounting and distal ends (288, 290) such that said sensing device transmits said at least one of said sound, pressure, light and electromagnetic waves and receives said reflection of said at least one of said sound, pressure, light and electromagnetic waves through said sensing passage (302; 302'; 302"; 302A), at least a portion of said sensing passage (302; 302'; 302"; 302A) having a cross-sectional dimension greater than said cross-sectional dimension of said sensing device such that said sensing device is at least partially disposed within said sensing passage (302; 302'; 302"; 302A) and such that said outer surface of said sensing device abuttingly engages said sensing passage surface (300; 300'; 300", 300A) thereby indexing and retaining said jounce bumper in a substantially-fixed rotational position about said longitudinal axis relative to said sensing device. a spring element having a longitudinal axis and extending longitudinally between opposing first and second ends; a first end member disposed in operative engagement with said spring element along said first end; a second end member disposed in operative engagement with said spring element along said second end; a sensing device including an outer surface with a cross-sectional dimension and being secured in a predetermined position along one of said first and second end members (234, 236), said sensing device operative to transmit at least one of sound, pressure, light and electromagnetic waves toward a distal surface and receive said at least one of said sound, pressure, light and electromagnetic waves reflected off of said distal surface to at least partially sense at least one of acceleration, pressure, temperature and height conditions of said assembly (102; 200, 204); and a jounce bumper supported along said one of said first and second end members (234, 236) in spaced relation to said distal surface and at least partially covering said sensing device, said jounce bumper including a bumper body (286; 286'; 286") including a mounting end, a distal end, and an outer surface extending peripherally about said bumper body (286; 286'; 286") between said mounting and distal ends (288, 290), and said bumper body (286; 286'; 286") including a sensing passage surface (300; 300'; 300"; 300A) that at least partially defines a sensing passage (302; 302'; 302"; 302A) extending through said bumper body (286; 286'; 286") between said mounting and distal ends (288, 290) such that said sensing device transmits said at least one of said sound, pressure, light and electromagnetic waves and receives said reflection of said at least one of said sound, pressure, light and electromagnetic waves through said sensing passage (302; 302'; 302"; 302A), at least a portion of said sensing passage (302; 302'; 302"; 302A) having a cross-sectional dimension greater than said cross-sectional dimension of said sensing device such that said sensing device is at least partially disposed within said sensing passage (302; 302'; 302"; 302A) and such that said outer surface of said sensing device abuttingly engages said sensing passage surface (300; 300'; 300", 300A) thereby indexing and retaining said jounce bumper in a substantially-fixed rotational position about said longitudinal axis relative to said sensing device.