SuperPro SPF4894K Rear Differential Mount Bush Kit for 85-97 Chevrolet Corvette

Vehicle Fitment

• 1985-1997 Chevrolet Corvette (C4 platform, rear axle differential mount)

Features

• Engineering-grade polyurethane bushings designed for the rear differential mount (bat-wing style) on the Chevrolet Corvette C4
• Replaces aged or worn rubber differential mounts which can flex under load and degrade handling precision
• Improves rear-axle stability, reduces unwanted differential movement and helps maintain correct rear geometry under acceleration and cornering
• High durability design - resistant to oil, water, coolant, road-salt and extreme temperatures for long service life
• Direct bolt-in solution with no ride-height change required - ideal for performance or enthusiast use of the Corvette C4 platform
• Maintains factory differential position and mounting integrity, thereby supporting consistent drivetrain alignment and traction feel
• Lifetime warranty from SuperPro ensures high-quality assurance and durability for performance applications
• Installation time estimated at approx. 2.5 hours, typical of rear-mount bush replacements on the C4 chassis

Specifications

• Position: Rear axle - differential "bat-wing" mount bushing kit
• Material: High-density polyurethane bushings with steel tubes/sleeves for correct load-sharing
• Kit includes: 2x bushings + 2x mounting tubes (per vehicle)
• Pedestrian spec: OD 54.5 mm x ID 30 mm x Length 64.5 mm (example bush dimension) :contentReference[oaicite:1]{index=1}
• Fitment confirmed through 1997; coverage for model years beyond 1997 or other vehicle platforms is unconfirmed at time of listing

Included Components

• 2x polyurethane differential mount bushings
• 2x steel inner mounting tubes/sleeves

Product Description

The SuperPro SPF4894K kit is a premium-grade upgrade solution for the rear differential mount "bat-wing" bushing location on the Chevrolet Corvette C4 (1985-1997). Over time, the factory rubber bushes can deteriorate, allowing the differential to shift under torque load, resulting in degraded handling, inconsistent rear traction and uneven tyre wear. This kit replaces those components with high-density polyurethane bushings, restoring rear-axle stability, improving drivetrain feedback and maintaining correct alignment feedback under performance loads.

Installation is straightforward for a qualified technician: support the rear differential assembly, remove the original bushings, insert the new polyurethane units with the steel sleeves, torque to manufacturer specifications, then perform alignment check of the rear axle and mount points. Because this is a direct-fit upgrade and does not alter ride height, it is ideal for both standard and upgraded Corvette C4 vehicles. Naturally, for best results under dynamic driving or track use, further suspension inspection is recommended and a full wheel alignment is advised.

If you're driving a Chevrolet Corvette from the C4 generation and desire enhanced rear-end control, reduced differential movement and longer-lasting mount performance, the SuperPro SPF4894K offers a reliable, engineered upgrade backed by a lifetime warranty. Fitment is confirmed for 1985-1997; beyond that year range or for other vehicles and chassis, coverage remains unconfirmed at the time of this listing.