The JK’s output shaft on the steering box is weak. The internal bearings that support the shaft are poorly positioned and are low quality, causing them to wear out very quickly. Some indicators include a noticeable “clunk” noise and excessive play in the steering wheel. Another problem is the sector shaft can twist or even break during hard use. Since the OE steering box is not serviceable, the only option is to replace the entire assembly. JKS’s track bar and sector shaft brace kit includes a reinforced track bar frame bracket and a sector shaft stabilizer with brace that goes across to the other frame rail. Our weak OE steering box is protected now. The JKS track bar uses OE Clevite bushings for quiet operation. Synergy coils are progressive and the perfect rate for the JK.