Shims used in the top assembly of Cane Creek IS41 and Italian IS42 drop-in headsets, for fine custom spacing of the top dust cover against the frame. Sold in 10-packs.

What it's for

This is not a steerer spacer — it only adjusts how the dust cover sits relative to the head tube. A 0.25mm shim is also how Cane Creek adapts some IS41 top assemblies to a 42mm (Italian) head tube bore.

Compatibility & fit

Fits Cane Creek IS41 and Italian IS42 drop-in style headsets, 28.6mm bore.

Options

SizeWhat differs
0.25mmThinner shim, 10 per pack
0.50mmThicker shim, 10 per pack
Cane Creek's warranty matrix lists small parts at 1 year from purchase, against defects in materials and workmanship. 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.
  • 28.6mm bore
  • For IS41 and Italian IS42 drop-in headsets
  • 10 shims per pack
Bore28.6mm
FitsIS41 & Italian IS42 drop-in headsets
Pack size10
Sizes0.25mm, 0.50mm
SKU DTW-CKS-HSTISSHIM-PAR
Brand Cane Creek
Shipping Weight 0.1200kg