SpeedFactory Racing Heavy Duty K-Series Shift Selector - SF-05-005SpeedFactory Heavy Duty K Series Shift Selector The new SpeedFactory K Series Shift Selector is the long awaited solution to the weak cast factory piece. K Series racers worldwide have had to deal with this piece breaking for years, often costing them a race and transmission damage. SpeedFactory has analyzed the failure points and re engineered this part for racing use precision machined from high strength tool steel, treated with our proven heat