KW Coilover Kit V3 – BMW 330i (G20)

OVERVIEW

The KW 352200CJ Variant 3 coilover kit is the upgrade for G20 owners who want more than ride height out of a coilover. KW's engineers developed a sporty but refined baseline and then made compression and rebound damping adjustable independently of each other, which is what lets you influence turn-in, tracking stability, tire grip and behavior at the limit separately rather than as a package deal.

Rebound damping is adjustable in 16 clicks via an integrated adjustment wheel or the included twist tool; rebound controls how quickly the piston rod extends and therefore how fast the spring returns, so more rebound force reduces pitch and roll and adds stability at higher cornering speeds, while less rebound increases comfort. Low-speed compression damping is adjustable by hand in 12 precise clicks through KW's patented adjuster; opening the compression valves makes the outside struts react faster in a corner, closing them makes the car more stable and the steering more precise. High-speed compression damping is fixed, because it is critical to safety.

The kit runs progressive-rate front springs, which stay soft over small road imperfections and stiffen under hard braking and cornering, and linear-rate rear springs for consistent feedback and control. KW manufactures the Variant 3 in Germany under ISO 9001 certification with TÜV approval.

SPECS

• Front lowering range: 1.6 in – 2.4 in
• Rear lowering range: 1.6 in – 2.4 in
• Rebound damping: independently adjustable, 16 clicks
• Compression damping: independently adjustable low-speed range, 12 clicks; high-speed compression fixed
• Front springs: progressive rate
• Rear springs: linear rate
• Strut housings: stainless steel with dirt-resistant trapezoidal threads for high load tolerance
• Adjuster collars: composite polyamide with stainless steel inserts
• Springs: cold-coiled oil-tempered chrome-silicon (CrSi) and chrome-silicon-vanadium (CrSiV) spring steel; tempered, shot peened, preset, phosphated and powder coated
• Manufactured in Germany, ISO 9001 certified, TÜV approved

PARTS INCLUDED

• Complete KW Variant 3 "inox-line" coilover kit as supplied by KW.
• Rebound twist-adjustment tool.
• KW installation documentation and parts certificate.
• See the KW installation instructions supplied with the kit for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• Non-EDC cars only — KW releases 352200CJ for the G20 330i without Electronic Damper Control. Confirm your car is not EDC equipped before ordering.
• Four-wheel alignment — a full four-wheel alignment is mandatory after installation and after any subsequent ride-height change.
• Professional installation — KW specifies fitment by a qualified suspension shop; installation at a KW specialist dealer is also what qualifies the kit for KW's extended warranty coverage.
• Tire-to-strut and fender clearance check — verify clearance at full lock and full compression, particularly with aftermarket wheel and tire packages.
• Ride-height sensor handling — cars fitted with headlight-leveling or adaptive-damper ride-height sensors require the sensor links to be relocated or adapted to the new ride height per KW's instructions.
• Driver-assistance recalibration — camera- and radar-based driver-assistance systems must be recalibrated after the vehicle is lowered.
• Installer-supplied tools: spring compressor, torque wrench, and the standard BMW suspension service tools.

Installation

• KW Variant 3 rebound and compression damper setup manual (KW document 685 77 044): Download PDF
• KW supplies vehicle-specific printed installation instructions in the box with every kit. Speed Logic could not confirm a downloadable KW installation PDF for order number 352200CJ; contact us if you need a copy before purchase.

Notes

• KW's own fitment data lists order number 352200CJ (non-EDC) against several additional G2x chassis beyond the G20 330i — the G42 230i, G22 430i, G20 M340i and G22 M440i, all without EDC. Confirm your exact model and damper equipment with Speed Logic before ordering.

PART NUMBER

• 352200CJ

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