Non-slotted aluminum reduction sleeve (30.7 to 27.2) for 31.7 dia. seat tubes
sku # SHM-ZBSRIDSP27.2
Columbus' aluminum reduction sleeve for reducing the inner diameter (30.7) of a 31.7 seat tube to 27.2. 90mm long.
This shim is a NON-slotted press fit shim and is intended to be bonded into place and slotted at the same time as the seat tube. JB Weld is often used. DP420 is highly recommended. Prep (degreasing) of the tube and shim is key.
37g - Weight is based on a representative shim. Actual weight may vary slightly. Imported.