You'd be smart to buy this rack. The 17" x 11" platform will improve your bike by infinite leaps, evolving your two-wheeler into a powerful and superior workhorse.
Any person looking upon you and your 7-rail will be overcome with awe, profound inspiration, and maybe even sexual desire. True story.
Platform dimensions: 17" x 11"
Max weight: 60ish lbs.
Compatibility: Fits bikes with average handlebar height. Measure the distance between top of front tire and handlebar center. If it's over 12", let me know. I can customize your rack for free.