Product Details

BC Racing ZX Series Coilovers for the 1999-2002 Nissan Skyline R34 GTS (ER34) bring the same three-axis adjustability as the race-spec ZR Series with valving tuned for drivers who split time between street and track. Every kit is extensively tested on the Skyline R34 GTS ER34 chassis and refined until it balances ride quality with performance — the reason Skyline R34 GTS coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.

ZX Series kits share the three-axis damper architecture of the race-spec ZR Series, tuned out of the box for drivers who want race-grade adjustability without the ride harshness on the commute home. BC Racing takes pride in choosing spring rates and damper valving that balance comfort and performance — you never end up with the oversprung, harsh-riding kit some brands ship as their only option. Drivers who want to deviate from the factory setup can order Swift Springs, custom spring rates, and custom valving at checkout; BC will re-valve the dampers to match whatever you specify, a level of customization most brands reserve for their top-tier race kits.

BC Racing's reputation in the aftermarket suspension world is built on four things: competitive pricing that beats the rest of the fully-adjustable market, customization depth that rivals the top-tier race brands, long-term reliability earned over 20 years of production, and a rebuildable design that keeps the same set of dampers serving you through multiple builds. These Skyline R34 GTS coilovers arrive tuned for the ER34 chassis and ready to bolt in — no break-in period, no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts — no unit replacement required when it's time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.

Features

  • 30-level rebound adjustment
  • 15-level low-speed compression adjustment
  • 12-level high-speed compression adjustment
  • Inverted mono-tube damper with linear twin-piston design
  • Ride height adjustable independent of spring preload
  • Upper mount hardware varies by chassis — camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.
  • Swift Spring and custom spring rate upgrades available at checkout
  • Custom damper valving paired with custom spring rates on request
  • Fully rebuildable — replacement parts available from BC for the life of the shock
  • 2-year manufacturer warranty against defects
Specifications
Part Number D-18-ZX
Part Name ZX Series Coilovers
Vehicle 1999-2002 Nissan Skyline R34 GTS RWD (ER34) Rear Fork
Drivetrain RWD
Chassis Code ER34
Damping Adjustment 3-Way (30 levels rebound / 15 LSC / 12 HSC)
Ride-Height Adjustable Yes
Spring Rate - Front 8 kg/mm
Spring Rate - Rear 5 kg/mm
Spring Size - Front 62-200-8K
Spring Size - Rear 62-220-5K
Swift Springs - Front 62-203-X
Swift Springs - Rear 62-228-X
Camber Plates - Front Not Applicable
Camber Plates - Rear Not Applicable
Suspension Design - Front True Coilover
Suspension Design - Rear True Coilover
Notes
  • Rear fork lower mount
  • Fits rear-fork chassis variants only (check under-car geometry).
  • The ZX Series is not available in Extreme-Low configuration.
Vehicle Fitment
  • 1999 Nissan Skyline R34 GTS RWD (ER34) Rear Fork
  • 2000 Nissan Skyline R34 GTS RWD (ER34) Rear Fork
  • 2001 Nissan Skyline R34 GTS RWD (ER34) Rear Fork
  • 2002 Nissan Skyline R34 GTS RWD (ER34) Rear Fork

Reviews / Q&A

FAQs

Please read our FAQs page to find out more.

How much will BC Coilovers lower my car?

On average, Standard Drop allows about 1-2 inches of drop range below factory ride height. Extreme Low allows about 2-3 inches of drop.

Can BC Coilovers achieve factory ride height?

No. In most cases, factory ride height cannot be achieved.

What is a custom build vs off-the-shelf kit?

The stock level displayed on our website reflects the availability of standard “off-the-shelf” kits, unless noted otherwise in the product description. Selecting any custom options—such as Extreme Low, custom spring rates, Swift Spring upgrades, or top mount changes—will result in a custom-built kit. Please note: all series except the BR Series are built to order, with the exception of select popular DS Series kits that may be in stock. Also, some popular Extreme Low kits are in stock as well. To identify these, look for "Extreme Low" in the product title.

Will the struts be valved correctly?

Yes! The shocks and/or struts are always valved to match the spring rates you choose during a custom build. There is no additional cost.

Can they be rebuilt?

Yes, all BC Racing Coilovers can be rebuilt by purchasing individual replacement parts. For example, if a strut leaks, you can simply replace the shock cartridge.

Is there rush shipping available?

Rush shipping is not offered, but all in-stock kits ship very fast— most by the next day.

Customizing the coilovers in any way will delay the shipment by a few weeks on average.

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