1999 Sterling L8500 Helper Springs
- Timbren®SES Rubber Helper Spring KitSterling L8500 / L8501 / L8511 / L8513 1999, SES Rubber Helper Spring Kit by Timbren®. This SES Suspension Upgrade fits the rear suspension truck. Each laser cut piece of steel is precision bent and powder-coated to ensure a quality...Improves ride and handlingEliminates trailer sway and roll$625.17 - $667.05