This chainring spider bolts onto an 8-Bolt Cane Creek eeWings crank and lets it run Shimano Ultegra 8100 chainrings, matching Ultegra's own offset so chain line stays correct.

Highlights

  • Fits 8-Bolt eeWings cranks only — not the earlier 3-Bolt eeWings interface
  • 110mm x 4-bolt BCD for Shimano Ultegra 8100 chainrings
  • CNC machined from 7075 aluminium
  • 7.5mm offset, producing a 44.5mm chainline to match an Ultegra 8100 crank
  • 78g

Matched to Ultegra 8100

The spider reproduces the chainline an Ultegra 8100 crank itself would give, so Ultegra chainrings sit where Shimano designed them to when mounted to an eeWings crank.

Compatibility & fit

Fits 8-Bolt direct mount Cane Creek eeWings cranks (the current eeWings generation) only — check which generation crank you have before ordering. Designed around Shimano Ultegra R8100-series chainrings. Tune's workshop can confirm fit and install it.

Cane Creek's eeWings accessories — chainring spiders and spindle bolt kits — carry a 1-year limited warranty against defects in materials and workmanship, verified on Cane Creek's warranty page (the eeWings crank itself carries separate, longer cover). For warranty support, return the product to Tune Cycles and we'll manage the claim with Cane Creek's Australian distributor. This is in addition to your rights under the Australian Consumer Law — keep your proof of purchase.
  • 8-Bolt eeWings direct mount interface
  • 110mm x 4-bolt BCD for Shimano Ultegra 8100
  • CNC machined 7075 aluminium
  • 7.5mm offset, 44.5mm Ultegra-matched chainline
  • 78g
Crank interface8-Bolt eeWings direct mount
BCD110mm x 4-bolt
Groupset fitShimano Ultegra 8100 chainrings
MaterialCNC machined 7075 aluminium
Offset7.5mm (44.5mm chainline)
Weight78g
SKU DTW-CKG-BAI0383
Barcode # 840226070698
Brand eeCycleworks