Synergy Jeep JK Weld-On Rear Track Bar Bracket to replace the thin and weak factory bracket Fits: 07-18 Jeep Wrangler JK 07-18 Jeep Wrangler Unlimited JK Details: Synergy JK Weld-On Rear Track-Bar Bracket Weld-On rear track-bar bracket designed to replace the weak factory JK track bar bracket Replace the thin factory brackets on a stock axle or use for swapping any axle into a JK Multiple Track-bar holes for suspension adjustments Designed to fit stock JK axle tubes, 3.150 inch diameter Will fit other diameter axle tubes with minor trimming Track bar relocation bolt holes are 2.900 Inch 3.713 Inch and 4.525 inch above the stock track bar mounting location Note: Requires the use of a minimum 3 inch bump stop spacer for clearance with the exhaust. When using a lower relocation bolt hole or aftermarket exhaust, a shorter bump stop spacer may be used7