Trail Safe Knuckle Ball Wiper Seals. Tired of wiping big clumps of dirty sandy grease off of your knuckle balls after every trip? So are we.

We asked our engineering department to look at the problems with the OEM design along with what was currently offered on the market and they came up with a one-piece, high grade polyurethane seal that is durable and will give you a lifetime of dependability.

Trail Safe Knuckle Ball Wiper Seals are without a doubt the best in the industry. No other design is comparable in performance and quality.

  • Double sided seal that keeps grease in and dirt out
  • Eliminates the use of the OEM felt and rubber
  • Made from seal-grade polyurethane, not UHMW
  • Seal is pliable enough to stretch over the knuckle ball during installation
  • No need to cut the seal for installation which could cause water to enter the knuckle ball and for grease to escape
  • Trail Safe Knuckle Ball Wiper Seals are sold in pairs with our legendary Rock Rings
  • One kit will complete one axle

Kit Includes:

  • 2x Trail Safe Knuckle Ball Seal Wipers
  • 1x Rock Ring Kit
  • 16x Rock Ring Bolts
  • 16x M6 Lock Washers


  • Warranty: 12 Month Limited Warranty
  • Sold As: Kit
  • Material: Polyurethane
  • Finish: Bare
  • Color: Grey
  • Fits: 1979-1995 Toyota Pickup and 1985-1995 Toyota 4Runner

Additional information

Weight 2 lbs
Dimensions 11 × 6 × 4 in