Description
Nissan S13 Silvia 240SX (89-94) BC Racing DS coilover kit 6/4 kg/mm
The BC Racing DS coilover kit S13 (part number D-12-DS-DA) is a coilover kit adjustable in height and damping, also simply called a coilover, for the Nissan Silvia, 180SX, 200SX and 240SX on the S13 platform, model years 1989 to 1994. The spring rate is 6 kg/mm front and 4 kg/mm rear.
With this kit you turn your S13 into a car that is ready for the track and for drifting, and that you can still drive in a sporty way on the road. Where the BR series is BC Racing’s all-rounder, the DS puts the emphasis on control in track use.
The DS series is BC Racing’s track-focused monotube range with a digressive piston. It provides extra damping force at low piston speeds of 0 to 50 mm/s, exactly where body roll, dive and squat under acceleration occur. Fast impacts from kerbs and joints, on the other hand, come through less harshly.
The spring rate is 6/4 kg/mm and you adjust the damping in 30 clicks. You set the ride height via the damper body, independently of the spring preload. According to BC Racing, the kit also fits the A31.
Key benefits
- Digressive piston: extra damping between 0 and 50 mm/s for a flat S13 in corners.
- 30-click adjustable: compression and rebound in one go per damper.
- Height independent of preload: run low without giving up damper stroke.
- Pillowball top mounts at the front: direct steering via the pillowball top mount or camber plate at the front; rubber or original top mounts at the rear.
- Concave lower lock ring: a recognisable DS detail for firmly locking the height.
- Satin chrome damper body: the typical DS finish.
- Spring rate 6/4 kg/mm: a good basis for the light S13.
- Rebuildable: the dampers can be rebuilt.
Suitable for
Nissan Silvia, 180SX, 200SX and 240SX on the S13 platform, model years 1989 to 1994
- Drifting and track days
- Sporty road use where control takes priority over comfort
- S13 projects built mainly for track and drifting
Technical specifications
- Manufacturer: BC Racing
- Part number: D-12-DS-DA
- Series: DS, digressive, track-focused
- Spring rate front/rear: 6/4 kg/mm
- Damper design: monotube with digressive piston
- Damping: 30 clicks, compression and rebound simultaneously
- Ride height: adjustable via the damper body, independent of the spring preload
- Top mounts: pillowball top mount or camber plate at the front, rubber or original top mount at the rear (code DA)
- Contents: dampers and springs front and rear, lower mounts, top mounts where applicable, adjustment spanners and warranty card with serial number
- Warranty: 1 year on manufacturing defects. Noise from track use is not covered by the warranty
Fitting and delivery
The kit replaces the original struts and dampers all round. We recommend having it fitted by an experienced mechanic. On some cars the pillowball top mount requires a small modification to the upper mounting point; if in doubt, contact us. First set the ride height and then have the wheel alignment done, because camber and toe change as well. The delivery time is 1 to 2 weeks as long as the manufacturer has stock. If the manufacturer is temporarily out of stock, you can still order and we will keep you informed of the delivery date.
BC Racing’s DS series combines a digressive piston with 30-click damping adjustment and a ride height that is adjustable independently of the spring preload.
Why choose this DS coilover kit S13?
Because the S13 is light and responsive, but on the original suspension it leans heavily in corners and dives under hard braking. The digressive damping of this kit keeps the body calm on turn-in, under braking and under acceleration, and you can feel better what the rear axle is doing. If you mainly drive on the road with the occasional track day, the BR in the table below is the more logical choice.
BC Racing coilover kits for the Nissan S13
Overview of the BC Racing series for the Nissan S13 supplied by Race4DriftParts, with the BC Racing part number. Spring rates in kg/mm, front/rear.
| Series | Part number | Springs f/r | Damping | Intended for |
|---|---|---|---|---|
| BR | D-12-BR-RA | 6/4 | 30 clicks, linear | Road with the occasional track day |
| DS (this kit) | D-12-DS-DA | 6/4 | 30 clicks, digressive | Track-focused, sporty road use |
| RM | D-12-RM-MA, inverted | 10/8 | 30 clicks, digressive, synthetic oil | Track days, hill climbs, tarmac rally |
| ER | D-12-ER, camber/caster top mounts | 8/6 | 2-way, 30 clicks per direction, external reservoir | Serious track and competition use |
| ZX | D-12-ZX | 6/4 | 3-way (20/12/30 clicks), external reservoir | Competition, long sessions, drift |
| ZR | D-12-ZR | 6/4 | 3-way (20/12/30 clicks), external reservoir | Competitive motorsport |
Frequently asked questions
What is the difference between the BC Racing DS and BR for the Nissan S13?
The DS has a digressive piston that responds more tightly to slow body movements and is more track-focused. The BR uses the same basis with a linear piston and is the better choice if the car is mainly driven on the road.
Is the BC Racing DS coilover kit S13 suitable for a Nissan 180SX?
Yes. The DS coilover kit S13 is intended for the Silvia, 180SX, 200SX and 240SX on the S13 platform from 1989 to 1994, and according to BC Racing it also fits the A31.
Can I drive on the road with the BC Racing DS coilover kit for the Nissan S13?
Yes. The DS is track-focused but also intended for sporty road use, and BC Racing recommends the RM and ZR series less for road use than the DS, among others. If you are mainly looking for everyday comfort, the BR is a better fit.
What is the delivery time of this BC Racing DS coilover kit for the Nissan S13?
The delivery time is normally 1 to 2 weeks as long as the manufacturer has stock. If it is temporarily sold out, you can still order and we will let you know when it arrives.
Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.
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