Tein Street Flex Coilovers - Infiniti Q50

Regular price $1,450.00 USD $1,297.42 USD

Ready To Ship! Special Order! Ships in 10+ weeks

Part # teinGSK54-51SS4

Tein Street Flex dampers are the evolution of Tein's popular Type Flex coilover. Developed to provide the ultimate balance of comfort and performance with the new Advance Needle technology, the Street Flex gives the driver a much more noticeable feel in damping force control. The shortened shell case design provides optimum damper stroke at lower than standard vehicle ride heights. While the full-length adjustability offers separate spring preload and ride height adjustment. Updated internal components and external coatings increase durability and product life.

Selectable spring rate only availalbe on Swift Spring upgrade

  • Infiniti Q50 [V37 RWD] (2014, 2015, 2016)


Steel Twin Tube Internal Construction
Full-Length Adjustable via Threaded Body and Spring Seat/Seat Locks
16-Way Damping Adjustable (simultaneous compression and rebound)
New Damper Valving Specifications for Improved Street Comfort
Incorporated Advance Needle Design (200% improvement)
Reinforced Rubber Upper Mounts for increased steering feedback
Larger Piston Diameter (22mm O.D.) for Strut Type
EDFC (Electronic Damping Force Controller)/EDFC Active Compatible
Powder-coated Brackets and ZT Coated Shell-case for Rust Prevention
Spring Rates (front / rear): 12.0 / 5.0 [in kgf/mm]
Drop Range (front / rear): +0.6 to -3.9 / +0.0 to -5.7 [inches]
Swift Spring Upgradable

Extended Information

Shock Absorber x 4
Bump Rubber x 4
Main Spring x 4
Hook Spanner x 2
Seat Lock x 8
Dust Cover x 4* (some applications)
Spring Seats x 4
Delrin Thrust Washer x 4
Instruction Manual x 1
Upper Mount x 4
Chassis Code: V35
Warranty: 1 Year Warranty

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In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.