BC Racing Coilovers – Deepal Sl03/L07 Extended Range RWD (21+) [C385]

BC Racing Coilovers Deepal Sl03l07 Extended are a direct-fit damper and spring package, sold as a complete four-corner kit. Chassis code C385. Fits 21+ cars. Default spring rates are front 5.5 kg/mm / rear 11 kg/mm.

Because height is adjusted at the lower bracket, dropping the car does not add spring preload. You keep the full damper stroke instead of running out of travel at the bottom.

BC Racing Coilovers Deepal Sl03l07 Extended 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 Deepal Sl03/L07 Extended Range RWD?

• 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 5.5 kg/mm front and 11 kg/mm rear. The stiffer rear is normal on this layout and helps the car rotate on turn-in instead of pushing wide. 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 Deepal Sl03l07 Extended

Work on a flat floor, set the height on the lower brackets, then roll the car forward and back to settle everything before you take a final measurement. Alignment comes after the height is set, not before.

Middle of the range is the sensible starting point. Move a few clicks at a time and keep notes, because chasing damping settings from memory rarely ends well.

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 Deepal Sl03l07 Extended questions

Will BC Racing Coilovers Deepal Sl03l07 Extended fit without modification?

The kit is cut to the Deepal Sl03/L07 Extended Range RWD damper and strut dimensions and uses the standard mounting points on the C385 chassis. No cutting or welding is needed for a standard car.

How low will the Deepal Sl03/L07 Extended Range RWD 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 Deepal Sl03l07 Extended come with?

Front: 5.5 kg/mm / Rear: 11 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.

If you are not sure which configuration suits your car, send us the registration and what the car is used for and we will confirm the right BC Racing Coilovers Deepal Sl03l07 Extended spec before you order.

More from this range: BC Racing coilovers. Other Deepal kits: Deepal Sl03/L07 Battery Electric RWD.