Rev9 Hyper-Street II comes up in almost every budget coilover thread for the Civic. Here's what they actually are, what you get for the money, and where they fall short compared to pricier options.
Rev9 makes coilover kits in the budget-to-mid range, and the Hyper-Street II is their most popular offering for the 10th gen Civic. It's a mono-tube coilover with 32 clicks of damping adjustment, front camber plates, and a ride height adjustment range that gives you roughly 1 to 2 inches of drop depending on how you set it up.
They're made in Taiwan, assembled to spec, and sold at a price point that undercuts most name-brand alternatives significantly. That's both their appeal and their limitation — the materials and tolerances reflect the price, and if you go in knowing that, you're less likely to be disappointed.
Rev9 coilovers make the most sense for a specific type of Civic owner. If your budget caps out around $600-700 and you want adjustable ride height and damping without shopping for lowering springs and separate shocks, they fill that gap. They also make sense as a first coilover purchase on a car you're still learning on — the risk of making a setup mistake on a $600 kit is a lot easier to stomach than on a $1,500 one.
They're less ideal if you're planning to track the car more than a couple of times a year. The damping internals are functional but not built for sustained heat cycles, and owners who push them hard on track days frequently report fade and inconsistency that doesn't show up in street driving at all.
This is where most Rev9 discussions end up, and the truth is messier than either the enthusiastic reviews or the harsh critics suggest. Out of the box, most owners find them noticeably firmer than stock, which is expected. Set at the softer end of the damping range, they're liveable on a daily driver with decent roads. Set too stiff — which most people do on install because they're excited — they're uncomfortable on broken pavement.
The damping adjustment range works, but it's not as precise as pricier kits. The difference between clicks 1 and 32 is real, but the sweet spot for most street setups ends up somewhere in the middle, and finding it takes a few weeks of driving and adjusting rather than a single session. This is true of budget coilovers generally, not a Rev9-specific criticism.
One thing worth knowing: the ride quality on a lowered Civic is heavily influenced by how low you actually go. Owners who run Rev9s at a moderate 1 to 1.2 inch drop tend to report a much better street experience than those who go all the way to 2 inches. The kit can go that low, but the ride quality suffers noticeably and the CV axle angle starts getting into territory that accelerates wear.
Before you buy: Rev9 coilovers ship with very little documentation. Watch a fitment video for the 10th gen Civic before your install day, not after. The front camber plate adjustment is straightforward once you know it's there, but easy to overlook if you're installing blind.
| Kit | Price | Damping | Rebuild Option | Track Use |
|---|---|---|---|---|
| Rev9 Hyper-Street II | ~$600 | 32-way | No | Occasional only |
| BC Racing BR | ~$900 | 30-way | Yes | Regular |
| Fortune Auto 500 | ~$1,200 | 16-way | Yes | Regular |
| KW Variant 3 | ~$2,000 | Independent | Yes | Frequent |
Rev9 makes Hyper-Street II kits for the 10th gen Civic (2016-2021) across the sedan, coupe, and hatchback body styles, including the Si. The FK8 Type R uses a different kit due to its wider track and different suspension geometry — don't order a standard Civic kit for a Type R.
The 11th gen Civic (2022+) fitment is less established for Rev9 specifically. If you're on an 11th gen, double-check current availability and read recent owner installs before ordering since the parts catalog for that generation is still maturing across most coilover brands.
Two things come up repeatedly in post-install feedback. First, people set the ride height too aggressively on day one. Go 1 to 1.2 inches lower than stock on your first setup, drive it for a couple weeks, and then decide if you want to go further. Going straight to the lowest possible setting before you've driven on it is how you end up with a harsh ride and a realignment bill two weeks after install.
Second, the alignment needs to happen after installation, not before. Some owners try to save money by skipping it. Within 2,000 miles of driving on misaligned coilovers you'll see uneven tire wear that costs more than the alignment would have. Budget $100-150 for a proper four-wheel alignment as part of the total cost of this kit.
When the kit arrives, resist the urge to go as low as possible immediately. Start at 1 to 1.2 inches below stock ride height and drive on that setting for at least two weeks. You'll get a realistic picture of how the ride feels before committing to a more aggressive drop, and you'll find out quickly whether your daily route has clearance issues at moderate drop before discovering them the hard way at maximum lowering.
On the damping adjustment, start at clicks 10-12 from full soft for street use. Most owners who report harsh rides with Rev9 are running clicks 20-25 or higher — that range works on smooth pavement but becomes punishing on urban roads with potholes and expansion joints. Work your way up from the softer settings rather than down from the stiffest ones.
Front camber plates need attention too. The kit comes with camber adjustment built into the top mount, but it ships set to zero adjustment. After you've set your ride height and had an alignment, ask the alignment shop to dial in around -1 to -1.5 degrees of front camber if you want a sportier setup, or leave it close to stock if you're keeping this primarily as a daily driver.
The most frequently reported issue with Rev9 coilovers on the Civic is the height adjustment collar seizing from road grime and rust if the car lives in a salt-belt state. Spraying the threads with anti-seize during install and doing a light re-application annually keeps this from becoming a problem. Skip this and a year later you'll find the collar won't budge when you want to adjust height.
The second common issue is damping knobs that become stiff or stop clicking cleanly after a few months of exposure to road spray. A light application of silicone spray on the adjustment mechanism during install and after each winter helps maintain smooth operation. Neither of these is a quality failure exactly — they're maintenance items that budget coilover brands don't tend to mention prominently in their marketing materials.
A lot of Civic owners treat the alignment as an afterthought — something to do eventually after they've been driving on the new coilovers for a few weeks. Don't do this. Driving on misaligned suspension, especially with a camber change from the coilovers, accelerates tire wear in ways that become obvious within a couple thousand miles and cost more to fix than the alignment would have. Book the alignment appointment before the coilover install date, not after you've noticed uneven wear.
The other thing worth knowing: not every shop does a good job with lowered Civic alignments. A generic tire shop that runs the standard alignment program may simply try to return everything to factory spec, which isn't appropriate once you've changed the ride height and added front camber plates. Find a shop that works with lowered cars regularly, or at minimum communicate explicitly that you want the alignment set for a lowered ride height rather than factory spec. The difference in how the car drives afterward is significant.
For the Si specifically, ask about rear camber correction if you're dropping more than 1.5 inches. The rear subframe geometry is less adjustable than the front, and significant negative rear camber from lowering accelerates inner tire wear more than most owners expect before they've experienced it. Rear camber arms or adjustable rear control arms address this but add cost — factor it into your total budget for the modification before you commit to ride height rather than discovering the need afterward.
Are Rev9 coilovers good for a Honda Civic daily driver? At moderate drop settings and with damping dialed toward the softer end, yes — they're liveable daily. Set too aggressively they're uncomfortable. The key is not going too low too fast on your first setup.
Do Rev9 coilovers come with camber plates? Yes — front camber plates are included on the Civic application, which is one of the things that sets them apart from other budget options at this price point.
How long do Rev9 coilovers last? With normal street use and moderate settings, 3-5 years or 40,000-60,000 miles is realistic before the damping starts feeling noticeably degraded. Hard use and aggressive settings accelerate wear.
Can I track my Civic on Rev9 coilovers? Occasionally, yes. Regular track days, no — the internals aren't built for sustained heat cycling and fade is a known complaint from owners who push them hard.
Do I need an alignment after installing Rev9 coilovers? Yes, always. Any ride height change requires a four-wheel alignment. Budget for this as part of the total install cost.