COILOVERS BR / BC RACING / INFINITI Q45

BC Racing BR Coilovers for Infiniti Q45

This BC Racing Club Sport BR coilover kit is designed to improve the dynamic behaviour of your Infiniti Q45 with effective, adjustable suspension suited to sporty road driving and occasional track days.

Developed from BC Racing’s motorsport experience, the BR range offers an excellent balance of driving precision, versatility and accessibility. It allows ride height and damping firmness to be adjusted to adapt the vehicle to your driving style and setup.

Purpose of the part

Coilovers replace the original suspension components to guide vertical wheel movement, control body movement and absorb road irregularities. They directly contribute to handling, braking stability, traction and steering precision.

The BC Racing threaded body allows vehicle height to be adjusted through the lower damper mount without altering spring preload or reducing useful travel. This design provides correct, effective and consistent adjustment for sporty road or track use.

Symptoms or consequences of worn or unsuitable suspension

• Deteriorated handling and insufficient cornering precision
• Excessive body roll during load transitions
• Instability under braking or at high speed
• Bouncing, wallowing or uneven damping
• Premature or uneven tyre wear
• Uncontrolled ride height or handling poorly suited to sporty driving

Benefits of replacement

• Clear improvement in stability and driving feel
• Precise ride height adjustment for the intended use
• Reduced roll and better vehicle support when cornering
• More direct suspension response during braking, acceleration and changes of direction
• 30-position damping adjustment to adapt the suspension to road, track or mixed use
• Effective solution while retaining useful versatility for daily use

Specifications

• Brand: BC Racing
• Series: Club Sport BR
• Product: coilover kit
• Condition: new product
• Application: Infiniti Q45
• Pressurised monotube design with a floating piston
• 46 mm piston within a 53 mm body for optimised oil capacity
• Height adjustment via the lower mount to preserve suspension travel
• 30-position damping adjustment via a knob
• Simultaneous rebound and compression adjustment
• Spring rates slightly higher than the Street range, suited to enthusiasts of sporty driving and track days
• High-performance oils for good thermal stability and consistent damping
• Special lower bushings for precise body support in the lower damper mount
• Spring rates are always stated in this order: Front / Rear
• Kit supplied with a pair of adjustment spanners, installation instructions and a warranty card

Possible BR range versions

• BR-RS : front and rear rubber mounted top mounts for a balanced compromise between comfort and performance
• BR-RA : pillowball front top mounts for greater precision, with rubber-bushed rear mounts where the configuration permits
• BR-RH : front and rear spherical bearing top mounts for maximum feedback and more performance focused use
• BR-RN : no front top mounts, mounting directly on original rubber bushes, with rubber-bushed rear top mounts where possible

Vehicle compatibility

• Infiniti Q45
• Compatibility must be checked against the vehicle's year, generation, engine and exact configuration
• Designed to replace compatible original suspension components
• A wheel alignment check is strongly recommended after installation

Conclusion

BC Racing BR coilovers for Infiniti Q45 offer an excellent solution to transform vehicle behaviour, improve precision and adjust the suspension to your needs, with new, adjustable equipment designed for sporty driving enthusiasts.