YCW Suspension

After countless hours of research into the various coilover setups currently available on the market, we noticed that there is a gap in the market for a budget setup that is:

1) Designed and Engineered in the United Kingdom by British Engineers
2) Offers a large choice of Linear Spring Rates, from 4K-34K
3) Utilises premium quality service components (i.e Valving, Oil Seals, Damper Fluid and Springs)
4) Offers local (North American, European and Asian) facilities for rebuild and servicing
5) Fully upgradeable to our more competition-orientated 2-Way and 3-Way Coilover Kits

The target market segment for our Aeris Series Coilovers are the everyday street car that may occasionally see some track time. We basically took our Reference Series coilovers and removed specialist services and/or components that were deemed unnecessary for the everyday street car, hence making them more budget-friendly. At only marginally more cost than the multitude of Taiwanese budget coilovers currently available on the market, you get a higher quality, better performing, British-Engineered coilover solution with an industry-leading warranty, unparalleled after-sales technical support and multi-national product servicing. Due to the nature of a customised product, we currently have a 1-2 week assembly lead time. None of the coilover kits we supply are off-the-shelf.
YCW Aeris Series Coilovers
- Spec'd for Superior Performance
- Priced for Affordability
- Over-Engineered for Comfort & Safety
- Proud to be British

Limited Lifetime Warranty on Hard Parts
- Warrantied against Manufacturers Defects
- Non-Transferable. Registration and Proof-of-Purchase Required
- Hard Parts include: Upper/Lower Mounts, Spring Perches, Locking Collars, Shock Body and Piston Rod

Limited 1 Year Warranty on Wear Parts
- Warrantied against Manufacturers Defects
- Non-Transferable. Registration and Proof-of-Purchase Required
- Wear Parts include: Bearings, Seals, Shock Internals and Springs (SWIFT do provide a Lifetime Warranty against Spring Sag)

Local Assembly
- All North American Coilovers are assembled at our San Dimas (California) facility
- All European Coilovers are assembled at our Leyland (UK) facility
- All Rest-of-world Coilovers are assembled at our Hong Kong facility

Multi-national Service Facilities
- North America: San Dimas, USA. Warranty Claims, Rebuild Services and Re-valving Services
- Europe: Leyland, United Kingdom. Warranty Claims, Rebuild Services, Re-valving Services and Corner-Weighing/Alignment Services
- Asia-Pacific: Hong Kong. Warranty Claims, Rebuild Services, Re-valving Services and Corner-Weighing/Alignment Services

  • Forged 6061-T6 Hard Anodised Aluminium Front Upper Mounts
  • - Strong and Lightweight, our Forged Upper Mounts are Hard Anodised for superior Corrosion Resistance
  • Forged 6061-T6 Hard Anodised Aluminium Rear Upper Mounts (Where Applicable)
  • - Strong and Lightweight, our Forged Upper Mounts are Hard Anodised for superior Corrosion Resistance
  • High-Tensile Carbon Steel Front Camber Plate with Anti-Slip Coating
  • - CNC-Machined High-Tensile Carbon Steel supports more load than lesser-quality mounts
    - Camber Angles can be adjusted precisely to your driving needs (MacPherson)
  • Forged 6061-T6 Hard Anodised Aluminium Upper Spring Perch
  • - Strong and Lightweight, our Forged Upper Spring Perches are Hard Anodised for superior Corrosion Resistance
  • 65mm ID Cold-Wound Japanese HS5.TW Steel Linear Springs from SWIFT
  • - Made in Japan by Tohatsu Spring Company, SWIFT Springs are made from the highest quality Japanese-grade spring steel, using proprietary manufacturing processes. These are the #1 Performance Coilover Spring on the market, providing an industry leading +/- 3% deviance from rated load over the entire stroke, and are backed by SWIFT's Lifetime Warranty against Spring Sag
    - Not all springs are manufactured the same. Lesser-quality, Taiwanese-manufactured springs offer inferior performance and durability
    - Although more expensive, we believe the increase in performance more than offsets the marginal increase in manufacturing costs
  • OEM-Balanced Spring Rates
  • - The majority of budget coilovers currently on the market offer default spring rates that deviate from the oem-balanced spring rates
    - By not accounting for Motion Ratio Calculations and just replicating race-car setups, this results in a very unbalanced and uncomfortable ride on a Street Car
    - All Aeris Series Coilovers are supplied with oem-balanced spring rates, offering you increased performance without sacrificing ride comfort
  • 52mm OD Cold-Drawn Japanese SAE 1020 Seamless Carbon Steel Shock Body
  • - Offers superior physical properties and strength-to-weight ratio over lesser manufacturing processes
  • Black-Zinc Plated Fully-Threaded Shock Body with 250hrs of Salt-Spray Testing
  • - Offers superior corrosion-resistance
    - All coilovers include a Salt-Spray Test Certificate
  • Forged SAE 4140 Chromoly Steel Piston Rod
  • - Monotube shocks, although offering increased performance over Twintube shocks, have an inherent weakness; a load-bearing Piston Rod
    - Our over-engineered solution to the problem, with only a marginal increase in manufacturing costs, is our proprietary Chromoly Steel Piston Rod. We are the only company to manufacture this type of Piston Rod, and is currently used by several high-end European brands under a "transfer-of-technology" agreement
    - Offering a substantial increase in tensile strength over lesser-quality rods, not only does this keep costs down, it significantly increases product safety
  • 4mm Rebound Adjustment
  • - Our Aeris Series Coilovers allow up to 4mm of Rebound Bleed Adjustment, allowing you to fine-tune your vehicle comfort and handling
    - Proprietary Bleed Needles and Jet Valves from the USA are used which significantly increases fluid control sensitivity between adjustments
    - Unlike the majority of coilovers on the market, we do not determine our adjustment range by "number of clicks" but rather, how much bleed is used i.e 4mm bleed = minimum Rebound Force. 0mm bleed = maximum Rebound Force. Typically, it takes at least 0.5mm of bleed to "feel the difference" between adjustments
  • Sandvik 20C Carbon Steel Shims
  • - Only the finest Swedish Sandvik 20C Carbon Steel Shims are used, which are specifically designed for use in shock absorber valving
    - Offers superior fatigue strength over the cheaper Taiwanese spring steel shims which lose their elasticity after only 12 months of normal use
    - Offers superior surface finish and dimensional tolerances, increasing fluid control sensitivity and smoothness
    - Although 10 times the cost of the cheaper Taiwanese spring steel shims, these premium shims ensure the consistency of our valving over extended periods
  • Silkolene PRO RSF 2.5 Damper Oil
  • - A proprietary formula providing consistent damping over a wide temperature range and superior anti-stiction/anti-friction properties. This British lubricant is the best performing damper fluid on the market today, as used standard by both Penske and Ohlins
  • Viton Performance O-Rings
  • - Upgraded O-Rings offering better performance and durability than lesser-quality Rubber O-Rings
  • Nitrogen Pressure Schrader Valve
  • - Allows convenient loss-free fine-tuning of Nitrogen Pressure
    - Gone are the days of using a Nitrogen Needle + Self-Healing Rubber, which are prone to leaking
  • Forged 6061-T6 Hard Anodised Aluminium Lower Spring Perch Locking Collar
  • - Strong and Lightweight, our Forged Locking Collars are hard anodised for superior Corrosion Resistance
    - 1pc Locking Collars, providing secure and hassle-free adjustments
  • Fully-Threaded Forged 6061-T6 Hard Anodised or High-Tensile Carbon Steel Lower Mount
  • - Threaded Lower Mounts allow you to precisely set the amount of required bump travel according to your vehicle modifications
    - Ride Height is not adjusted by the lower mount; it is adjusted by the spring perch
    - As Swift Linear springs are used, spring rates do not change when pre-loading the spring; that only applies to non-linear springs
  • Fully Rebuildable
  • - Our Aeris Series Coilovers are fully rebuildable, with spare parts always in stock and available for purchase directly from one of our local service facilities
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Due to the nature of For Race Use Only products, YCW Suspension will provide a limited lifetime warranty on all Hard Parts and a limited 1 year warranty on all Wear Parts to be free of defects in materials and workmanship upon receipt of product and time of professional installation. It is the sole responsibility of the buyer/installer to verify the suitability for installation. Parts returned must be determined by YCW Suspension to be defective before any warranty credit or replacement is issued

YCW Suspension obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges

Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. YCW Suspension shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor

YCW Suspension shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty

There are no other warranties expressed or implied extending beyond those set forth above

IMPORTANT: When ordering, please include your chosen Spring Rates (choose from 4K-34K) in the PayPal Notes. If you require assistance in choosing suitable Spring Rates for your application, please feel free to use our Spring Rate Calculator or Contact Us
Aeris Series Coilovers

Part No.: YCW-AER-FB
Fitment: Honda Civic Si (USDM FB 2012-2013)
MSRP: US$1,499.95 US$1,099.98
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