ION #25 Billet Sprockets


ION #25 Billet Sprockets are compatible with the REV ION System and designed for use with #25 chain. #25 Billet Sprockets are machined from billet 6061 aluminum and feature integrated stiffening geometry that allows them to transfer significantly more torque than traditional flat plate sprockets through their MAXSpline centers.

The #25 Billet Sprockets also feature a 2in bolt circle that patterns outward radially and in conjunction with the thickness of the integrated stiffening geometry, this allows you to mount the sprocket directly to a flat surface (like the side of a MAXTube) while maintaining enough clearance to avoid additional spacers.


  • Single piece machined construction
  • Integrated spacer for easy mounting to MAXTube
  • Compatible with MAXHubs


  • Weight:
    • 40T: 72g (0.16lb)
    • 48T: 95g (0.21lb)
    • 56T: 113g (0.25lb)
    • 64T: 127g (0.28lb)
    • 72T: 145g (0.32lb)
  • Material: Aluminum 6061-T6
  • Finish: Black Anodized
  • Bore: MAXSpline
  • Hole Size: #10 clearance


Product Options

 REV-21-3370   #25 Billet Sprocket - 40T   STEP FILE ONSHAPE DRAWING
 REV-21-3374   #25 Billet Sprocket - 48T   STEP FILE ONSHAPE DRAWING
 REV-21-3378   #25 Billet Sprocket - 56T   STEP FILE ONSHAPE DRAWING
 REV-21-3382   #25 Billet Sprocket - 64T   STEP FILE ONSHAPE DRAWING
 REV-21-3386   #25 Billet Sprocket - 72T   STEP FILE ONSHAPE DRAWING