The H&R 51856 is a sport lowering spring set for the eighth-generation Honda Accord V6 two-door coupe, covering model years 2008 through 2012. Owners on user forums have run H&R springs on V6 coupes, and the setup is aimed at drivers who want the lower stance without going to a full coilover system. For a buyer who wants a fender-gap change and a little less body roll, this is a sensible, low-commitment upgrade over stock.
The trade-off is shock life. Owners on user forums consistently warn that lowering springs on factory dampers wear them out faster, and the bigger the drop, the shorter that life gets. If you plan to drive the car hard or lower it further later, budget for replacement dampers or go straight to coilovers. For a street car that mostly stays on the factory shocks, these springs are a reasonable middle ground. Plan on a wheel alignment after installation, since the 8th-generation Accord's front suspension offers limited camber adjustment and owners have needed camber kits after lowering.
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Owners on user forums report that factory dampers can work with lowering springs on mild drops, but they wear faster than stock and wear faster still with larger drops. Expect to replace the shocks sooner if you run these on stock dampers.
User forums recommend a professional alignment after installation to confirm the setup is correct. Some owners who lowered their V6 coupes needed a camber kit to straighten the wheels, so check alignment before assuming the stock geometry will be fine.
Published listings disagree on which body style each number covers, so confirm the correct part number with the manufacturer before ordering.
This is an intermediate job. Owners on user forums describe the spring swap as manageable for a mechanically inclined DIYer, but the spring removal is the hardest part and the one where people get hurt if they rush. Use a proper spring compressor on the old springs, support the car on jack stands, and keep the strut assembly stable as you lower the jack. Owners also note that a helper makes reinstalling the strut assembly much easier. Finish with an alignment, since the car's geometry changes with the new ride height.
