OEM part no: 021003-1123 (GP9306) - Please check with your original rotor. The RO5 has 4 'protrusions' on the outside, 3 short and 1 long, (these trigger the pickup coil).
No exchange required.
All products supplied are "Brand New" eliminating the need for customers to send in the old ones and come with a one year's guarantee (6mnths for mx/enduro bikes).
Manufactured here in the UK.