1998 Mack DM Series Helper Springs
- Timbren® - Rear SES Rubber Helper Spring KitMack DM600 / DM600K / DM600S / DM600SX / DM600X /... 1998, Rear 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...Improves ride and handlingEliminates trailer sway and roll$733.75 - $1,428.36