Track day or racing? In my opinion that's a big difference. I personally wouldn't care much how much slower I'd be behind a racing trim CRF450 or any other racing sumo bike on a nice sunny track day. Track day is about you and your pace, there will always be bikes faster than you and most likely some slower than you. People on different machines ......
If you are planning to race, I wouldn't be putting DRZ into the same sentence, unless it is DRZ only series, which of course doesn't exists.
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