By simply replacing a motorcycle's stock shock linkage with a longer, stronger and lighter DeVol Lowering Linkage, a bike's seat height will be dramatically lower to help give those riders with shorter inseams a more confident and enjoyable ride. High-grade U.S. billet aluminum. Longer linkage dramatically lowers seat height. Hard anodized finish. Applicable models include bearings / seals. Step-by-step instructions. 100% made in the U.S.A. Note: The DeVol Lowering Linkage is NOT recommended for aggressive riders or jumping. Detailed Specifications: Lowers rear end 1-1/2".