Product Details
BC Racing BR Series Coilovers for the 2009-2020 Nissan 370Z (Z34) are BC Racing's entry-level coilover and the most popular kit in their entire lineup — they offer the most accessible entry into adjustable coilover suspension without sacrificing performance, comfort, build quality, or handling. 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.
Every BR Series kit is built around a mono-tube damper with simultaneous compression and rebound adjustment at every corner — a wide damping range without the complexity of a race-only setup. Ride height is fully adjustable independent of spring preload, so you set the stance and the ride separately. The off-the-shelf setup from BC Racing is deliberately balanced — spring rates and valving chosen so the kit feels comfortable day-to-day without giving up performance when you push it. Drivers who want a different recipe can spec Swift Springs, custom spring rates, or fully custom valving at checkout; BC will tune the dampers to match, which is a depth of customization most brands only offer on their top-tier 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 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 linear piston and hardened chrome shaft
- 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-BR |
| Part Name | BR 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)