Our Clip-on Load Adjusting Mechanism (CLAM, for short) provides a quick way to adjust load with no tools required. It’s so easy you can even do it on the water.

Each CLAM provides 1 cm of inboard and is a convenient alternative to moving buttons if your crews are sharing oars between an eight and a four, you’d like to quickly test different loadings with your crews, or you find yourself in a headwind after a long row. They also provide a great wear surface between the collar and the oarlock.

CLAMs are included with every new oar purchase and can also be purchased separately.

Use one or two clams per oar for a 1 cm or 2 cm change in inboard. Use of more than two CLAMs per oar is not recommended.

Important: CLAMs are designed for use with current production Concept2 sleeves only and may not fit properly on other sleeves. Use orange CLAMs (part number 606—this item) if the sleeves on your oars are green or black. If the sleeves on your oars are white with replaceable wear plates, order blue CLAMs, (part number 600).