Quarq SRAM S975 GXP 130 BCD (53/39T)

Title says, for sale is a lightly used SRAM S975 Quarq power meter for GXP bottom brackets. The chain rings are 53/39T and are in good shape. The crank was only used for one full season of racing (2 halfs and a full) and has been very lightly used since, all and all in excellent condition.

$950 shipped takes it. Will consider serious offers but am in no particular rush to sell so lowballs will be respectfully declined.

http://i.imgur.com/RRS5CHc.jpg

http://i.imgur.com/vLg1NhC.jpg

what length are the crank arms?

Crank arm length is 172.5mm.

Thanks