Shimano Ultegra FC-6500 / 6503 Triple Crankset | 30-42-52 Chainrings | 172.5

Description

Shimano Ultegra FC-6500/6503 Triple Crankset | 172.5mm | 52-42-30T | Octalink V1

Notes from MyBikeThing Cold-forged aluminum construction paired with Shimano’s robust Octalink V1 interface delivers exceptional power transfer and durability. This 9-speed era Ultegra crankset represents the peak of Shimano’s square-taper successor system. What sets this apart is the precision-engineered 8-spline interface that provided a significant leap in stiffness over traditional bottom bracket designs.

xcellent overall with minimal wear. Chainrings show very light use with crisp shifting edges and no tooth deformation. Spider arms are pristine with no scratches or damage. Hollowtech arms retain their original luster with only minor scuffs from normal use. Need more detailed photos or specific measurements? I’m Paul – longtime mechanic and restoration specialist. Drop me a line and let’s talk about your build!

Workshop Wisdom Octalink V1 installation requires careful attention to torque specs – 39-49Nm on the crank fixing bolts. Pro tip: The V1 spline pattern is shorter than V2, so be sure to specify V1 when sourcing a compatible BB. Keep the splines completely clean and dry during installation for optimal interface performance.

Tech Specs

• Configuration: Triple 52-42-30T
• Arm Length: 172.5mm
• BCD: 130mm outer/74mm inner
• BB Interface: Octalink V1
• Material: Cold-forged aluminum
• Weight: 698g (verified)
• Includes: Crank bolts, chainring bolts
• Required: Octalink V1 BB (not included)

Value Assessment

• Market Value: $145-185
• Original Retail: $289 Worth it because:
• First-generation Hollowtech technology – lighter and stiffer than solid arms
• Premium Ultegra-grade materials and finish
• Versatile gearing perfect for loaded touring or climbing
• Increasingly collectible early Hollowtech design

You put in the miles, we put in the work! 30 day Guarantee, rest assured of fit, function and condition.