Duo base adds two accessory mounts to Kovee 35mm stemBlendr works with this simple formula: Stem + Base + Mount. Add accessory.Please use the Bontrager/Trek Blendr compatability flowchart to ensure your selection of stem, base and mount are compatible.
This product is covered by Bontrager's Unconditional Guarantee - If for any reason you’re not satisfied with your purchase, return the item within 30 days for an exchange or store credit.
