1983 Mack Midliner Series Helper Springs
- Timbren®SES Rubber Helper Spring KitMack MS200P Mid-Liner / MS250P Mid-Liner / MS300P... 1983, 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...Improves ride and handlingEliminates trailer sway and roll$496.65 - $1,428.36