Campagnolo Super Record ProT with Power Meter 175x50/34 UT crankset carbon MFPN=925-01-329 International Standard 6-bolt disc mount

International Standard 6-bolt disc mount

ODI Bjorn lock-on V2

Aero Chainrings for SRAM 8-Bolt Cranks

Price - for less expensive replacement chainrings

Campagnolo Super Record ProT with Power Meter 175x50/34 UT crankset carbon MFPN=925-01-329 International Standard 6-bolt disc mountThe new Super Record Wireless Cranksets are designed to efficiently transmit every possible watt of power to the road for uncompromising perfomance. Integrated powermeter allows for taking training regiments and rider input to the next level. Excellent stiffness and optimum power tranmission from pedal to drivetrain. USB ceramic bearings for unparalleled smoothness and friction reduction. Optimized design for use with any chainring combination.