1989-1994 Nissan 240SX Fortune Auto 510 Series Adjustable Coilovers

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Fortune Auto 510 Series Coilovers


The ultra wide range of adjustment offered by the CFD piston allows for the convenience of tuning your suspension without having to revalve your dampers. A conventional shock absorber can withstand a 2kg spring rate difference before requiring a revalve, whereas the Concave Flow Digressive Technology has a broad range of 8kg spring rates. This is invaluable for tuning your suspension quickly at the track on race day.


The Concave Flow Digressive Piston allows for a Jekyll and Hyde personality. Lower spring rates can be stiffened up by using the wide damping range as an artificial spring rate, while higher spring rates feel much smoother. The large adjustment range contributes to a comfortable ride on the street and unyielding performance on the track, all with the twist of a single adjustment knob.

  • Amsoil Synthetic Shock Oil

  • Modularity - Upgradeable to 2-Way Canister

  • Aluminum T6 6061 Mounts and Camber Plates

  • Concave Flow Digressive Piston Technology

  • 24 Step Simultaneous Rebound and Compression Adjustable Dampers

  • Rebuildable and Revalveable at our VA Facility

  • Custom Built - Assembly Certificate and Dyno Graph Supplied with all 4 Shocks

  • Monotube Damper with High Pressure Nitrogen

  • 5 Year Limited Manufacturer's Warranty

35% greater range of damping adjustment

Generation 6 models benefit from an upgraded jetting assembly. In previous generations the orifice bleed holes were hand drilled. Generation 6 bleed holes are now CNC machined allowing for more consistent damping adjustments between shocks. Furthermore flow of the orifice bleed holes has increased and a re-designed jetting assembly is used, this yields a 35% increase in damping force adjustment. Providing the user with a shock that has more performance and adjustability.

Revised CNC machined components

New CNC machined adjustment knobs replace the outgoing cast molded knobs. These new machined adjustment knobs are hard anodized and more aesthetically pleasing. Updated shaft end caps are now lighter and showcase a more elegant design.

More upgrade options

Fortune Auto has developed 2 new al la carte options that make Generation 6 systems even more customizable.

A. 7075-T6 Hard anodized aluminum damper bodies now available on motorsports series double wishbone strut applications. Provides for superior heat dissipation and extreme weight savings of up to 2lbs per shock.
B. All new LSP (locking spring perch) no longer requires a locking ring to lock the spring perch in place. This allows more height adjustment on some McPherson applications and is less likely to come loose benefitting motorsports applications that run larger and more aggressive tire compounds.

More Information
Weight0.00 lbs
Parent Product TypeSuspension Upgrades
Product TypesCoilovers
BrandFortune Auto
Year1989, 1990, 1991, 1992, 1993, 1994