Its a Wing support for the 2017 Javelin, for those that want to install the 2017 cages on older Javelin.
Kyosho Javelin roll bar wing support mount set
$29.00Price
Please allow 1 - 3 business days for order processing after payment. Item(s) will be send via Regular Airmail. 7 - 14 business days for shipping to the U.S. 14 - 21 business days to most European Country 30 - 40 business days to Italy and France