Less than a year old and ridden very little. This version of the Fuel has a carbon main with an aluminum rear end. It is also a mix of slx and xt components. The bike retailed for $4000 and the wheelset carries an msrp of $999.99. With the little use, this bike is in great shape with no scratches. Asking $2000. Let me know if you have any questions. Call, text or email. 651-353-4459 or klei2fast@yahoo.com Thanks, -Ryan