Fit a clamp-on front derailleur sized for a larger seat tube onto a narrower frame with the correct shim.

Highlights

  • Adapts a wider derailleur clamp band to a narrower seat tube
  • Two size ranges to cover common diameter drops

Sizes & options

OptionWhat differs
1-1/8"–1"Steps a 1-1/8-inch clamp down to a 1-inch seat tube
1-1/8"–1-1/4"Steps a 1-1/8-inch clamp down to a 1-1/4-inch seat tube

Compatibility & fit

Match the shim to your derailleur's clamp size and your frame's actual seat tube diameter at the front derailleur mount. Confirm both before ordering.

Wheels Manufacturing covers this product against manufacturing defects; contact us and we'll sort any issue quickly. This is in addition to your rights under Australian Consumer Law. For warranty support, return the product to Tune Cycles and we'll manage the claim with Wheels Manufacturing's Australian distributor.
  • Front derailleur clamp shim
  • Two diameter-reduction options
Options1-1/8" to 1", 1-1/8" to 1-1/4"
SKU SCV-P-10905
Brand Wheels MFG