Best Progressive Spring Rate

Eibach Pro-Kit Performance Spring 35145.140 Set of 4 Compatible with Ford Mustang 2015-Up

  • High performance handling and aggressive good looks.
  • Stop quicker, corner faster and get better MPG!.
  • Progressive spring design for excellent ride quality.
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Tein VSY20-C1SS3 Flex Z Coilover Kit for Lexus IS300

  • Front - Ride Height Adjustment: -35mm/Spring Rate: 10 kg/mm (560 lbs./in).
  • Rear - Ride Height Adjustment: -40mm/Spring Rate: 8 kg/mm (448 lbs./in).
  • 16-level Linear Damping Force Adjustment System.
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Eibach Pro-Kit Performance Spring Kit 4017.140 Set of 4 Springs Compatible with Honda Civic 1992

  • High Performance Handling And Aggressive Good Looks.
  • Stop Quicker, Corner Faster And Get Better Mpg.
  • Progressive Spring Design For Excellent Ride Quality.
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Pedders 160033 Xa Adjustable Coilover Suspension Kit for Pontiac GTO

  • ...ilovers offer 36 levels of damping which allow you the ability to perfectly dial in your coilover kit. Set damping to full soft for a nice comfortable cruising setting for normal driving..
  • COLLARS AND UPPER MOUNTS MADE FROM 6061 ALUMINUM WITH T6 FOR INCREASED HARDNESS -Our spring perches, locking collars, top mounts and some lower mounts are made from high quality 6061 aluminum. Benefits include excellent strength and aluminum helps reduce weight..
  • CAMBER ADJUSTMENT ON MANY MODELS - Many of our applications that have pillowball upper mounts also have camber adjustability. This is extremely helpful when you need to dial in your camber for vehicle alignment purposes. This also eliminates the need for a separate camber kit. NOTE: Camber adjustment is not available on all models with pillowball upper mounts..
  • ADJUSTABLE LOWER MOUNT ALLOWING MAXIMUM SUSPENSION TRAVEL - Most of our coilovers feature the ability to adjust your ride height without affecting the shock and spring travel. This way you can set your desired ride height without having to worry about bottoming out the shock..
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Tein VSM40-C1SS1 Flex Z Coilover Kit for Mazda Miata

  • Front – Ride Height Adjustment: -25mm, -30mm and -35mm/Spring Rate: 7 kg/mm (392 lbs./in).
  • Rear – Ride Height Adjustment: -25mm, -30mm and -35mm/Spring Rate: 6 kg/mm (336 lbs./in).
  • 16-level Linear Damping Force Adjustment System.
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Eibach Pro-Kit Performance Spring Kit 4018.140 Set of 4 Springs Compatible with Honda Civic 1999-2000

  • High Performance Handling And Aggressive Good Looks.
  • Stop Quicker, Corner Faster And Get Better Mpg.
  • Progressive Spring Design For Excellent Ride Quality.
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Eibach Pro-Kit Performance Spring Kit 4045.140 Set of 4 Springs Compatible with Acura TSX 2004-2008

  • High Performance Handling And Aggressive Good Looks.
  • Stop Quicker, Corner Faster And Get Better Mpg.
  • Progressive Spring Design For Excellent Ride Quality.
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Coilovers for Mazda Miata MX5 MX-5 NA NB 1989-2005 Suspension Coil Spring Struts Shock

  • Fit for Mazda Miata MX5 MX-5 NA NB 1989-2005.
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TuningPros LS-097-B Lowering Springs Kit Blue Set of 4

  • Lower rate: 1.5-Inch Front, 1.75-Inch Rear.
  • Constructed from Japan SAE 9254 cold wounded steel.
  • Corrosion-Protected with phosphate and powder coatings.
  • Spring rates specifically tuned for handling and comfort.
  • Provide exceptional response, control and balance.
  • Compatible with OEM stock or aftermarket shocks.
  • This part is guaranteed to fit: Scion tC 2011-2012.
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Rancho RS66114B-1 Suspension Kit

  • ORDERING INFO -- Box 1 of 3 for master kit RS66114B.
  • must order RS66114B-1, RS66114B-2 and RS66114B-3 for a complete kit.
  • COMPATIBILITY -- Designed for 2-door and 4-door Jeep Wrangler JK.
  • BUILT FOR THE TRAIL -- Designed to fit up to 37-in. tires, get 4-in. of additional ground clearance and increased wheel travel for rock crawling, trail riding or on-road driving.
  • COMPLETE SOLUTION -- Kit includes front and rear progressive rate coil springs, upper and lower control arms, heavy-duty front and rear adjustable track bars, extended sway bar end links, bump stop spacers and mounting hardware.
  • MAINTENANCE-FREE BUSHINGS -- Adjustable control arms and track bars feature Rancho’s D2 high-articulation, grease-free bushings that allow the sleeve to rotate in the bushing freely to reduce wear.
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