X-Core 3 Spoke Wheels

Anybody try or own a pair of X-Core 3 spoke wheelchair wheels? They look pretty cool..... despite the fact they are carbon fiber wheels I hear they add 4.6lbs. per wheel onto the total weight of your chair. Priced at $430 compared to Spinergy at $625, worth checking out?

http://ift.tt/1SOM6IZ

http://ift.tt/1SOM6J1

Thanks.

X-Core 3 Spoke Wheels