KellTrac Xtreme Differential Bushing Upgrade Kit; Rubber

Avoid headaches and replace those pesky failure prone OE or aftermarket diff bushing kits with this KellTrac S550 S650 Mustang Differential Bushing Upgrade Kit. This kit includes everything you need to upgrade your S550's Differential bushings to the best engineered kit on the market! This EXTREME kit features a proprietary rubber and billet bushing design with high quality MASSIVE Grade 12.9 fasteners sourced from Italy. This kit presses into the stock IRS subrame like stock and the bolts install without any modifications or fabrication required.

*THIS KIT IS A FULL STOCK REPLACEMENT THAT REQUIRES REMOVING THE IRS SUBFRAME ASSEMBLY FOR INSTALLATION*

Kit Includes: (4) 12.9 High Strength Alloy Steel Bolts, (4) Class 12 nuts, (4) HSS Washers, (1) HSS Drill Bit (4) Rubber+Billet Diff Bushings

FEATURES AND BENEFITS:

• 40% more clamp force than next strongest offering
• Industry's strongest bolts, ASTM A574, 170,000psi Tensile Strength
• High Quality, High Strength Class 12 Nuts
• High Quality HSS Zinc Coated Standard Washers
• Best Engineered Differential Bushings Available
• Lowest NVH of any full diff bushing replacement kit
• Proprietary Rubber+Billet Bushing Design
• Lifetime Warranty

NOTES:

• Due to factory tolerances, shimming or modifying the diff position within the subframe could be needed. If you have issues please contact us.
• Due to the change in fastener diameter, all bushings and differential mounting points will need to be drilled out with provided drill bit
• Due to the change in class/grade strength, ALL (4) FASTENERS REQUIRE A TORQUE OF 185ftlbs.
• We recommend torquing all fasteners with a "dab" of name branded Blue Loc-Tite.
• Bushings press "outside in" like factory - billet machined faces contact differential mounting ears
• All bolts install "outside in" - largest silver washers and bolt heads are all outboard side of IRS subframe and bushings

*Long bolts install on rear mounts / Shorter bolts install on front mounts

**Ensure that arrows on front flange side face left to right when installing bushings. DO NOT INSTALL WITH ARROWS IN ANY OTHER ORIENTATION.

CLICK FOR INSTALLATION

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov