1999 Kenworth W900 Helper Springs
- Timbren®Rear SES Rubber Helper Spring KitKenworth W900 / W900S 1999, 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 ensure a quality fit. Engineered...Improves ride and handlingEliminates trailer sway and roll$1,034.08 - $1,428.36