Wheel-A-Matic WA1889 WAM-WA1889 Trailer Kingpin Extension
The WA1889 trailer kingpin extension simplifies and makes fast, accurate measurements from the kingpin center to the trailer tandems. Tt easily adjusts to fit various height trailers. A tape ( not included ) is attached at the bubble to insure more accuracy and consistency. The spring loaded cone assures accurate holding to the kingpin. Tt should be used in conjunction with the WA1888 tandem tracker series or the WA1890 tandem tracker for aluminum wheels which extends the axle centers beyond the wheel rims, eliminating the need to remove the wheel hub covers.
- Maximum height 48"
- 6" adjustment in 2" increments
- 3" spring motion