Fox 2.5 Factory Series 2.5" Internal Bypass Bump Stop, Stem Mount (981-25-040)

The Fox 2.5 Factory Series Internal Bypass Bump Stop provides sophisticated bottom-out control for off-road vehicles. Utilizing patented internal bypass technology, this bump stop delivers position-sensitive damping that allows for a smooth ride through the initial travel while generating significant pressure at the end of the stroke to prevent harsh metal-on-metal bottoming. This design provides a progressive cushion that supports the vehicle's suspension during high-velocity impacts.

Built to withstand extreme environments, these bump stops feature 2.5-inch aluminum bodies protected by a proprietary Cerakote ceramic coating over a zinc-plated basecoat for superior corrosion resistance. The 7/8-inch shafts are constructed from hard chrome-plated 4130 chromoly steel to ensure durability and resistance to pitting. These units are fully owner-serviceable and rebuildable, allowing for long-term performance and custom tuning.

• Series: 2.5 Factory Series
• Travel: 2.5 inches
• Mounting Type: Stem Mount
• Internal bypass technology for position-sensitive damping
• Proprietary Cerakote protective ceramic coating over zinc-plated basecoat
• JM92 MIL-SPEC oil developed for off-road racing
• Black anodized CNC-machined aluminum components
• 7/8" hard chrome plated 4130 chromoly steel shaft
• Fully owner-serviceable and rebuildable
• Manufacturer Part Number: 981-25-040