





This BC Racing coilover is made-to-order. Please expect 5-7 weeks for build time.
Customize your BC Racing coilovers with custom spring rates and upgraded springs.
Swift Springs are not available for this kit.
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BC Racing DS Series coilovers for the 2002-2004 Infiniti M35/M45 with spindle Y34. This vehicle-specific kit uses BC Racing's digressive piston design in a monotube damper, aimed at giving the chassis more support during braking, turn-in, roll, and quick transitions without making higher-speed damper movement feel abruptly harsh.
For a Y34 that sees more than straight-line commuting, the DS Series focuses on the part you actually notice from the driver's seat: better feedback as the car settles, brakes, and changes direction. No more tying ride height directly to spring compression. BC Racing also offers custom spring rates, custom valving, and compatible Swift spring upgrades for applicable DS configurations.
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