Spidertrax 35 Spline Ultimate Unit Bearing 8 on 6-1/2" x 9/16" Studs Side:1 Left & 1 Right This Pro Series Knuckle is

This Pro Series Knuckle is designed to install on a Spider 9 Housings w/ 4" OD tubes

Call with any questions (909) 499-3537

we've developed an all new rotor that exceeds every braking performance category Ultra4 has come to know

lightweight

all black hardware for cool styling and EZ adjusters on the shoulders

Spidertrax 35 Spline Ultimate Unit Bearing 8 on 6-1/2" x 9/16" Studs Side:1 Left & 1 Right This Pro Series Knuckle isBuilt ground up for Ultra4 rock racers, the Spidertrax Ultimate Unit Bearing is truly the reinvention of the unit bearing itself. Genuine Timken bearings, full chromoly heat treated construction, left & right hand threaded spindle nuts, and a fully integrated drive slug makes the Ultimate Unit Bearing the only racing unit bearing of its kind. The Ultimate Unit Bearing, the last bearing you'll ever need. This Ultimate Unit Bearing uses 9 16" 18 studs