Note: Though the picture of this filter is round and is to be flexed into a oval to fit within other K&N assemblies such as the following:

56-1010, 56-1020, 56-1130, 56-1140, 56-1150,56-1190, 56-1200,  56-1210, 56-1220, 56-1230, 56-1255, 56-1330, 56-1360, 56-1650, 56-1651, 56-1652, 56-1660, 56-1693, 56-1720, 56-9004, 56-9005, 56-9006, 56-9013, 56-9019, 56-9032, 56-9037, 56-9049, 56-9059, 56-9060, 56-9073, 56-9074, 56-9075, 56-9079, 56-9108, 56-9109, 56-9111, 56-9150, 56-9250, 56-9252, 56-9272, RC-9000,

Because this filter is only 54mm High the centre bracket  of your original assemblies may need to be lowered or raised depending on the assembly you have.

See Here to see full list

Specifications
Height    2.5 in (64 mm)
Inside Diameter    6.75 in (171 mm)
Outside Diameter    7.75 in (197 mm)
Package Contents    1 Air Filter
Weight    0.7 lb (0.3 kg)

Product Box Height    8.63 in (219 mm)
Product Box Length    8.5 in (216 mm)
Product Box Width    3.63 in (92 mm)