BMW 3-series E90 05-13 2-Way Adjustable Circuit Racing Coilovers (Inverted)
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Estimated Delivery:Jan 14 - Jan 18
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All Street & Track Series coilovers are assembled to order
BMW 3-series E90 05-13 2-Way Adjustable Circuit Racing Coilovers (Inverted)
DESCRIPTION
Supashock 2-Way Circuit Racing coilovers are designed specifically for circuit racing. Toughened inverted struts can be found on most Circuit Racing models, ideal for punishing track conditions and competitive racing.
FEATURES AND SPECIFICATIONS
- Monotube Coilover Design.
- Inverted Strut Design on most models (check the Configuration Options).
- 33 clicks of adjustable damping (2-way), separate adjustment dials for compression and rebound.
- Remote reservoir canister for greater oil capacity (increases cooling and damping performance).
- Camber adjustable (where applicable) via camber plate or slotted strut foot.
- Fully threaded body for full-length height adjustment via the strut foot.
- Upper mounts as optioned, vehicle-model specific (pillowball, aluminium, rubber or OEM).
- Forged aluminium, adjustable spring seat and locking collar.
- 55mm steel shock body on inverted coilover designs.
- 'Wave' alloy steel thrust washer on inverted coilover designs.
- Fully serviceable/rebuildable.
- Ready to install.
KIT INCLUDES
- 2x Front Struts (including springs)
- 2x Rear Struts (including springs)
- 2x C Spanners
Some kits include other accessories such as sway bar end links or separate damping adjustment dials, if they are required. Please contact us to confirm if your kit includes any additional accessories.
Please note:
- Upper mounts are supplied as noted in the Upper Mount Type option. Pillowball upper mounts add greater road feel for increased handling and accuracy but can result in torsional spring noise occasionally. There is no detriment to the function or safety of the coilovers. Returns under warranty for noises associated with the pillow ball upper mounts will not be considered. For investigative work related to coilover noise, workshop rates will apply if products are found to have no issues.
- Pictured with optional Camber + Caster adjustable front mounts. Please contact us if you would like this option (available on select models).
- For some vehicle model set-ups, the spring will be separate from the damper. For this type of setup, vehicle height can be modified via a supplied adjustable spring seat.
- Photos shown are inverted monotube design front and rear coilovers. Actual product will vary depending on vehicle model and coilover configuration chosen (check the Configuration Options).
Unique Progressive-Digressive Damper Curve
Supashock’s unique progressive-to-digressive damping curve offers significant benefits by transitioning from progressive damping in soft settings to digressive damping in stiffer settings.
Enhanced Comfort in Soft Settings
Progressive damping provides smoother resistance at lower speeds, effectively absorbing small bumps and irregularities, ensuring a comfortable ride when you want it.
Improved Performance and Control in Stiff Settings
Digressive damping at higher stiffness settings delivers strong force at low shaft speeds, enhancing control for body roll, braking, and cornering. The damping force plateaus, preventing excessive harshness and allowing quick suspension reactions.
Ride Height Adjustment
Supashock Street & Track Coilovers feature fully-threaded damper bodies.
This allows you to adjust your overall damper length via the strut foot, and adjust your ride height via the spring perch.
Adjusting the spring perch alters the pre-load on the spring, however does not alter the spring rate which is determined by the design of the spring itself.
Monotube Damper Design
Supashock's advanced monotube damper gives you damping technology derived from nearly two-decades of V8 Supercars development.
Monotube damping separates the damper oil from the high-pressure nitrogen gas. If the two were able to mix (as they do in twin-tube dampers), the gas will cavitate within the oil causing 'damper fade,' severely impacting performance.
For ultimate performance, choose Supashock's Inverted Monotube damper option (pictured), available on selected vehicle models.
The inverted strut increases the rigidity of the unit, giving greater stength and performance.
Your satisfaction is important to us!
All Supashock Street & Track Series Coilovers come with a 12-month limited warranty. For more information, visit our Warranty Policy page.