Reduces bounce from heavy chop or wake when motor is in stowed position. Attaches between upper and lower arm of mounting bracket. Pivots into vertical position when motor is stowed, rotates into horizontal position along side upper arm when motor is deployed. Saltwater tested and fully resistant to corrosion. 1862012 - MKA-4: Fits any Maxxum Pro, Maxxum, Riptide Pro and Riptide SM mount trolling motor