BC Racing Coilovers – Nissan Sentra (Torsion Beam) (20+) [B18]

BC Racing Coilovers Nissan Sentra (Torsion Beam) are a direct-fit damper and spring package, sold as a complete four-corner kit. Chassis code B18. Fits 20+ cars. Default spring rates are front 6 kg/mm / rear 4 kg/mm.

Height and preload are adjusted separately. Lowering the car on the bracket leaves the spring seat where it is, so you are not trading ride quality for ride height.

BC Racing Coilovers Nissan Sentra (Torsion Beam) specification

Available kit configurations

Each configuration is the same damper and spring package with a different top mount arrangement. The kit code is the BC Racing part number for that build.

Which series for the Nissan Sentra (Torsion Beam)?

• BR Series gives you 30-way rebound adjustment and full height adjustment independent of spring preload.

Spring rates and what is in the box

This kit ships at 6 kg/mm front and 4 kg/mm rear. The rates are matched front to rear for a balanced setup on the road. Rates are chosen by BC Racing per application, so they suit a fast road and occasional track car as supplied. If the car is built for something more specific, a track weapon or a car carrying a lot of aero, the rates can be changed without replacing the dampers.

The kit covers all four corners and includes the dampers, springs, lower brackets, locking collars and the adjuster spanners. Top mounts depend on the configuration you pick from the table above. Anything that is worn on the car already, drop links, bushes, top mount bearings, is worth checking while the suspension is apart.

Fitting and setting up BC Racing Coilovers Nissan Sentra (Torsion Beam)

Set the height first, settle the suspension by rolling the car, measure, then adjust. Only book the alignment once the ride height is final, because camber and toe both move as the car comes down.

Start with the damping adjusters in the middle of their range and work from there. Wind towards firm for track work and back off for road use, changing one end of the car at a time so you can feel what each change did.

These are serviceable units. Spring rates can be swapped and the dampers rebuilt, so the kit can be re-specced as the car changes rather than replaced.

Worth reading if you are new to this: how a coilover works and why height and preload are separate adjustments.

BC Racing Coilovers Nissan Sentra (Torsion Beam) questions

Will BC Racing Coilovers Nissan Sentra (Torsion Beam) fit without modification?

The kit is cut to the Nissan Sentra (Torsion Beam) damper and strut dimensions and uses the standard mounting points on the B18 chassis. No cutting or welding is needed for a standard car.

How low will the Nissan Sentra (Torsion Beam) go on these?

Height is adjustable across the full range of the lower bracket. How low you can usefully run depends on your wheel and tyre size and how the car is used, so set it to suit how the car is actually used.

What spring rates do BC Racing Coilovers Nissan Sentra (Torsion Beam) come with?

Front: 6 kg/mm / Rear: 4 kg/mm as standard. The springs are a standard ID, so rates can be changed later without replacing the dampers.

Do I need an alignment afterwards?

Yes. Camber and toe both move as the car comes down, so book the alignment once the ride height is set and the suspension has settled.

Are these road legal?

Adjustable suspension is legal for road use in the UK. Keep the ride height sensible, make sure nothing fouls at full lock or full compression, and tell your insurer the car has been modified.

Not sure which top mount option you need? Send us the reg and how the car gets used and we will confirm the BC Racing Coilovers Nissan Sentra (Torsion Beam) spec.

More from this range: BC Racing coilovers. Other Nissan kits: Nissan Ariya AWD, Nissan Fairlady Z (Rear Integrated) (RWD), Nissan Serena AWD.