This frame is a 6061 aluminum BBR style perimeter unit that has been upgraded with 2 longer tubes, and a one piece rear loop(removable subframe), and a BBR Style Single Sided Swingarm for more wheel travel. Super lighter and super strong the BBR style perimeter frame kit is the ultimate upgrade for your CRF/XR50. It replaces your stock frame to get more wheelbase and better stability and better handling when building your Ultimate Backyard CRF Mini Racer!!!
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