Introduction
MXR-B3 based on MXR-B2 coilovers, which is also height adjustable but adds damping adjustment ability by a knob the top of the shaft. They are also made for street use, but the 24 level rebound damping control allows you the ability to perfectly dial in your coilover setup.  You will experience better ride quality in all road conditions.

Application

For Mazda Miata MX-5 NA (1.6L,1.8L) 1989-1997

For Mazda Miata MX-5 NB (1.6L,1.8L) 1998- 2005

For Mazda MX-5 I (NA) (09/1989-04/1998) 
For Mazda MX-5 II (NB) (01/1998-10/2005)
For Mazda Miata Base Convertible 2D 1990-1997
For Mazda Miata Base Convertible 2D 1999-2005
For Mazda Miata SE Convertible 2D 2000-2003
For Mazda Miata LE Convertible 2D 1993
For Mazda Miata M Edition Convertible 2D 1994-1997
For Mazda Miata STO Convertible 2D 1997
For Mazda Miata 10th Anniversary Convertible 2D 1999
For Mazda Miata LS Convertible 2D 2000-2005

Specification

Height adjustable: Yes
Damping adjustable: Yes, 24 levels of rebound damping force
Front top mount: Pillow ball
Rear top mount: Pillow ball
Camber adjustable: Not available
Spring Rate Front: 7 kg/mm (392 lbs/in)
Spring Rate Rear: 6 kg/mm (336 lbs/in)
Front spring inner diameter: 70.5 mm
Rear spring inner diameter: 70.5 mm
Spring length Front: 180 mm
Spring length Rear: 160 mm
Spring Preload advised: 7-10 mm
Shock type: Twin tube

Package included
2x Front coil-overs
2x Rear coil-overs
1x Allen wrench
2x C spanners

Dimension
Package size : 70*50*20 cm
Weight: 27560 g

Feature

1. Lowered height adjustment from 25-75mm (depends on vehicle models) which allows a lower center of gravity and also adds a more aggressive stance 
2.24 levels of adjustable damper -- This allows you the ability to perfectly dial in your coil-overs system. For nice comfortable driving, set damping to full soft. For more spirited driving, set it to 16 clicks. For occasional track days, set it to full stiff.
3. Adjustable pre-load spring tension to reduce the shaking motion to a certain extent
4. Adjustable Camber Plate and Pillow ball top mount for sharpening steering response. ( for some models)
5. CNC machined Aluminum  top mounts and lockers-- - excellent strength, and save weight
6. Heavy Duty Steel Lower Mounts--- Highly Durable & Reliable
7. High tensile spring---  600,000 times continuously test to assure its high tensile strength.
8. All inserts come with fitted long rubber boots--- To protect the damper better and be durable.
9. Twin-Tube structure ---provides excellent handling & control characteristics for most driving conditions
10. Corrosion Finish - Anodized Aluminum And Powder Coated Carbon Steel Parts

Note

1. All modifications must be installed by licensed mechanics and in compliance with your local modification regulations.
2. Please ensure all components are tightened with correct torque specifications (which can be found in the vehicle service manual)before and after installation. Any loose nuts, bolts, or locks will cause noise. Do check and tighten before serious problems happen. 
3. Impact wrench is prohibited during the installation, it will loosen or damage the product.
4. Examine the clearance between tires and suspension. ( The minimum clearance should be 4mm, otherwise, you need to add wheel spacers. Caution: It is not sufficient with torsion beam trailing arm axles)
5. We suggest regular maintenance for the coil-over, spray with some WD40 every 3-4 months will keep it smooth and clean, which helps to extend the lifetime.