Description
Will this work?
- Shimano 105 BB-5500, sealed cartridge
- Octalink V1 spline (5mm deep)
- 68mm English thread, BC 1.37×24
- 118.5mm spindle — triple cranksets
- Fits FC-5500/5503, 6500/6503, 7700/7703
- Includes: BB unit, both cups
Condition: Excellent condition. Threads are clean, splines are sharp, cartridge spins smooth. Lots of miles left.
Notes from MyBikeThing: Octalink V1 is discontinued, and anyone running a 9-speed-era 105, Ultegra, or Dura-Ace crank needs exactly this to keep it alive. Sealed cartridge, fit and forget — these routinely outlast the bikes they’re installed on.
Workshop Wisdom: Don’t confuse Octalink V1 (5mm splines, road) with V2 (9mm, MTB) — cranks and BBs don’t cross over. If your crank is FC-5500/6500/7700 family, this is your unit.
Guarantee: You put in the miles, we put in the work! 30 day Guarantee, rest assured of fit, function and condition 🙂
Keywords: Shimano BB-5500, 105 bottom bracket, Octalink V1, 118.5, 68mm English, triple bottom bracket, sealed cartridge, 9 speed, FC-5500, FC-6500, vintage Shimano, road bike









