NEW OEM Harley Nightster RH975 Sportster S Rear Shock Spanner Wrench 14900135NEW OEM Harley Nightster RH975 Sportster S Rear Shock Spanner Wrench 14900135 Description Product Name: Shock Spanner Wrench Tool Part Number (MPN): 14900135 Finish: Coated flat metal finish Function: Used to turn the preload adjustment collar on the rear shock absorber to stiffen or soften the suspension based on rider weight. Storage: On many models, this tool is designed to be stored under the seat for roadside adjustments. Model Fitment This tool