UK stockist of BC Racing Suspension

BC Racing ZR Series coilovers

BC Racing ZR Series Coilovers

External Reservoir and 3-way Adjustment for track use

BC Racing's ZR Series models bring a 3-way adjustable track ready coilover system to racers at an affordable price that's never been seen in the industry. Each ZR series coilover system offers independent low speed / high speed compression damping adjustments and separate rebound adjustment. They also offer full height adjustability independant of piston travel and spring preload. On cars with McPherson struts the ZR Series comes with an inverted mono-tube damper with the steel braided teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or trunk. Cars with double wishbone suspension come with upright dampers with steel braided Teflon coated lines or solid stem that exit the damper at the bottom and lead to the external reservoir that can be mounted under the chassis or on the shock body itself. they offer 30-clicks of rebound adjustment, 15 clicks of low speed compression and 12 clicks of high speed compression adjustment.

  • Mono-tube damper with 3 way adjustable damping
  • Inverted damper design (depending on models)
  • 30 clicks of rebound adjustment
  • 12 clicks of high speed compression adjustment
  • 15 clicks of low speed compression adjustment
  • height adjustment via shock body - not spring
  • Choice of spring rate
  • 1 year limited warranty against manufacturer defects
  • fully rebuildable with all parts available for purchase

BC Racing ZR Series Features

Mono-tube inverted dampers (Cars with McPherson struts only):

Reduced Damper Flex

The BC Racing ZR Coilovers use large 42mm inverted monotube dampers. This inverted style allows both the inner and outer tubes to take all of the side loads encountered when cornering. This reduced flex of the BC Racing ZR series gives a more predictable steering feel and improved responsive handling. It also improves the life of the BC Racing damper seals.

Reduced unsprung weight

The mono-tube inverted damper design on the BC Racing ZR series coilovers has a number of advantages, including reducing unsprung weight by moving the oil and gas reservoir way from the hub and attaching it to the shell.

Reduced heat transfer

Also by inverting the coilover damper the oil and gas is moved away from the hub assembly. This means that less heat is transferred to the oil under braking which makes for more consistent damping.

External Reservoirs

These BC Racing ZR series coilovers The external reservoirs hold much more oil than conventional coilovers, allowing the unit to operate for much longer before overheating.

3-way adjustable Damping - Separate Rebound and High / Low Speed Compression Adjustment

The external reservoirs also house a secondary piston, which allows for separate adjustment of rebound and high / low speed compression damping. Rebound damping is adjusted on the top of shock and compression damping is adjusted on the external reservoir.

Standard Features of all BC Racing Coilovers

Ride Height Adjustment

BC Racing Coilovers alter ride height using an adjustable bottom mount. As ride height is set by this bottom mount rather than the spring platform your BC Racing Coilover retains full damper travel no matter what your ride height. This also allows the BC Racing Coilover spring pre-load to be set independently.

Nitrogen pressurised Monotube Coilovers

The BC Racing coilover kits use Nitrogen pressurised Monotube dampers with a large diameter pistons and bodies. Mono-tube pistons are much larger than twin-tube coilover dampers. This allows it to be more sensitive to small suspension movements . The larger outer shafts are stronger so they cope with higher side loads. Nitrogen pressurised Monotube coilover dampers give a more consistent damping performance and do not suffer from aeration or performance fade in comparison to a twin tube BC Racing Suspensiondamper design.

Corner weight adjustment

The lower spring platforms of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.

The car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.

Corrosion protection

The BC Racing Coilover damper units are black chromed steel to give superb durability against the weather and road salt in winter.
The aluminium components are anodised and the steel lower mounts go through an electrocoating process followed by powder coating.

Top mounts included on most kits

Many of the BC Racing coilover kits come with complete with replacement top mounts. These BC Racing top mounts are either rose jointed (pillowball) top mounts or rubber top mounts. The anodised alloy top mounts eliminate any flex or play associated with the standard rubber top mounts, improving response and handling. In addition some of the BC Racing coilover kits also allow for camber / castor adjustment through the solid top mounts to give additional tuning flexibility.

Optional BC Racing Damping Extenders

The BC Racing coilover kits are available to be purchased with rear damping extender cables. If chosen these allow you to adjust the 30 way damping from a more convenient position on the car. Three lengths are available and these can be cut down to size.

Custom spring rates at no extra cost

Kam Racing are able to supply the BC Racing coilover kits with spring rates of your choice at no extra cost. Simply contact our sales team and we will arrange this for you..

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