Would only need the P2M spider if I stuck with 3D24. Any real upsides to 3D+? Such wattage, etc.
No. If you've got the 3D24 cranks already, stick with them.
@Brommers started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
Would only need the P2M spider if I stuck with 3D24. Any real upsides to 3D+? Such wattage, etc.