For sale: Quarq Riken powermeter. 130mm BCD, 172.5mm arms, GXP (not BB30). No rings. Unit is in very good condition, I'm the original owner and it's been on my TT bike for the last several years. So maybe an average of 4-5 events per year, plus another 15-20 training rides. Almost certainly less than 1000 miles on it, and it looks it. ANT+ communication, firmware has always been updated via Qalvin.

$450 shipped in the Continental US.