I'd just hit reputation 1 with SRL, and opened the kit which you're rewarded (I'm not sure which it was, I was too excited to open it to check if it was a sparrow or racer kit).
Interacted with the item to open it, but there was no item reward.
Logging out and back in again hasn't refreshed the reward.
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Each time you rank up you'll get a racers kit. If you open it but have no room for the item it should go directly to your mailbox.