These carbon wheels are built to race, and strong!! 1,650g for the set (per e*Thirteen website). Front is 110mm x 15mm boost. Rear is 148mm Boost x 12mm. I am selling them mounted with brand new e*Thirteen TRS Race tires (never ridden). Retail is $1,798 without the tires. Rear hub is SRAM 11sp or 12sp compatible.