The Eibach Pro-Kit 4089.140 is a four-spring lowering set for the 3.5L V6 Honda Accord sedan. It replaces the factory coil springs with progressive-rate springs. The manufacturer positions the kit around lowering the center of gravity, which reduces squat under acceleration, body roll in corners, and nose-dive under braking, while keeping the ride comfortable enough for daily driving. Compared with stock, it gives the car a more planted stance and sharper turn-in. Compared with a generic drop spring, it is engineered as a matched set, so the front and rear heights and spring rates are designed to work together.
This kit is designed for front-wheel-drive Accord V6 sedans. The product title references 2013 to 2014, but several sources list 2013 through 2017 V6 sedans, so confirm your year with the manufacturer. The published drop is roughly 1.3 inches front and rear, though figures vary, so verify before ordering. The manufacturer's Pro-Kit installation sheets say to keep the factory isolators and dampers and to mark the orientation of the upper strut perch before disassembly. Owners on user forums report a DIY job of roughly 2 to 4 hours with a lift, and one owner finished in about 3.5 hours on jack stands. Owners also suggest a rear camber kit is likely needed on the V6 to prevent tire wear and fender rubbing, especially with wheel spacers. Searchers looking for 2013 Accord V6 lowering springs, Pro-Kit vs Sportline Accord, or 4089.140 install guide will find the details here.
Yes. The manufacturer's Pro-Kit installation sheets direct you to retain the original isolators and dampers, and owners on user forums run the set with stock shocks.
Owners on user forums commonly suggest one for the V6, since the larger drop can add negative camber and cause uneven tire wear. Have an alignment check after installation to confirm your setup.
For the front struts, owner install guides call for spring compressors. One owner reported that the rear springs went in without compressing them.
This is an intermediate-level job. Owners on user forums suggest using a hoist or drive-on lift for the most comfortable access, though jack stands work. Typical tools include 10, 12, 14, and 17 mm sockets and wrenches, a torque wrench, and front spring compressors. Per the manufacturer's Pro-Kit install sheets, always support the vehicle on safety stands, avoid impact tools on shock piston and rod nuts, and install each spring with the Eibach logo right side up. Mark the upper strut perch before disassembly so it goes back in the same orientation, which the manufacturer notes is important. Owners on user forums mention that the rear bump-stop trim step is optional, and that the rear top damper nuts are accessible through a panel in the trunk. After installation, the manufacturer recommends checking wheel alignment, tire and fender clearance, brake line clearance, and ABS sensor positioning.
