Product Details
BC Racing DS Series Coilovers for the 2009-2020 Nissan 370Z (Z34) blend street-tuned ride quality with track-ready adjustability, giving you more body control than any OEM damper without the harshness of a pure race kit. Every kit is extensively tested on the 370Z Z34 chassis and refined until it balances ride quality with performance — the reason 370Z coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.
DS Series kits pair a mono-tube damper with BC's proprietary digressive piston design — increased low-speed damping for flat corner entry, compliant high-speed response over expansion joints and potholes. The finished shock body is silver, visually distinct from the BR Series, and ride height is adjustable independent of spring preload. Where BC Racing separates itself is tuning philosophy: every off-the-shelf spring rate and damper setup is chosen to stay comfortable on daily roads while still delivering real performance at the track. If you want something different, Swift Springs, custom rates, and custom valving are all options at checkout — BC will match the valving of the dampers to whatever springs you pick, something most brands don't offer outside their flagship race lineup.
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 370Z coilovers arrive tuned for the Z34 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 simultaneous compression/rebound damping adjuster
- Mono-tube damper with BC's proprietary digressive piston
- Silver satin-chrome finished shock body (visually distinct from the BR Series)
- 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-121-DS |
| Part Name | DS Series Coilovers |
| Vehicle | 2009-2020 Nissan 370Z RWD (Z34) |
| Drivetrain | RWD |
| Chassis Code | Z34 |
| Damping Adjustment | 1-Way (30 levels) |
| Ride-Height Adjustable | Yes |
| Spring Rate - Front | 9 kg/mm |
| Spring Rate - Rear | 5 kg/mm |
| Spring Size - Front | 62-220-9K |
| Spring Size - Rear | 62-200-5K |
| Swift Springs - Front | 62-203-X |
| Swift Springs - Rear | 62-203-X |
| Camber Plates - Front | Not Applicable |
| Camber Plates - Rear | Not Applicable |
| Suspension Design - Front | True Coilover |
| Suspension Design - Rear | True Coilover |
| Notes | True-Rear coilover conversion replaces the factory divorced shock-and-spring with a single coilover unit. |
Vehicle Fitment
- 2009 Nissan 370Z RWD (Z34)
- 2010 Nissan 370Z RWD (Z34)
- 2011 Nissan 370Z RWD (Z34)
- 2012 Nissan 370Z RWD (Z34)
- 2013 Nissan 370Z RWD (Z34)
- 2014 Nissan 370Z RWD (Z34)
- 2015 Nissan 370Z RWD (Z34)
- 2016 Nissan 370Z RWD (Z34)
- 2017 Nissan 370Z RWD (Z34)
- 2018 Nissan 370Z RWD (Z34)
- 2019 Nissan 370Z RWD (Z34)
- 2020 Nissan 370Z RWD (Z34)