TeraFlex 1958602 SpeedBump Bump Stop Kit Rear 6-Inch Lift

The TeraFlex SpeedBump Bump Stop Kit (Rear, 6" Lift) is an innovative composite bump stop system engineered to outperform factory bump stops, which can deform under hard compression and aggressive suspension movement. Designed specifically for high-performance off-road use, this rear kit is sized for JK Wrangler builds running 6 inches of lift and installs with a straightforward bolt-on process—no welding, no tuning required.

Unlike OEM rubber bump stops, TeraFlex SpeedBumps use performance-tuned, closed-cell nitrogen-charged microcellular polyurethane technology that delivers a true progressive compression response. This means impacts are absorbed gradually rather than abruptly, reducing harshness when bottoming out on the trail or on rough pavement. The material is unaffected by temperature extremes and retains its flexibility in both thermal and sub-zero conditions, making it suitable for year-round, all-terrain use.

The SpeedBump's self-lubricating Delrin acetal resin polymer shaft is built to endure thousands of continuous compression cycles without wear or abrasion. An integrated external shaft seal wipes and cleans the shaft on every stroke, keeping contaminants like mud, sand, and debris from entering the housing—eliminating the need for ongoing maintenance.

Key Features:

• Progressive microcellular polyurethane construction absorbs large impact energy to protect axle housing tubes, suspension components, and fenders
• Self-lubricating Delrin acetal resin polymer shaft withstands thousands of cycles without wear
• External shaft seal keeps contaminants out and prolongs shaft life
• Maintenance-free design — no adjustment or tuning required after installation
• Resistant to mud, salt, sand, dust, and all environmental conditions
• Quiet operation — no pad-slap clunk
• Simple bolt-on rear installation
• Compatible with all suspension systems that retain factory axle and spring mounting locations

Kit Includes:

• SpeedBump Bump Stop Kit - Rear (4" Lift) — Part # 1954760
• 2" Bump Stop Extension Kit - Rear Upper (4–6" Lift) — Part # 1954802