BC Racing BR Series Coilovers - Mazda Miata MX5 89-05

The BC Racing BR Series coilover kit N-04-BR covers the 1989 to 2005 Mazda MX-5 Miata, spanning both the NA and NB generations. It brings the BR formula to the lightweight first and second generation roadsters: mono-tube dampers with 30 levels of adjustment, pillowball upper mounts, and separate full length ride height adjustment, delivered with 7K front and 5K rear springs.

Core Features

• Mono-tube shock design
• 30 levels of damping force adjustment
• Pillowball mounts
• Separate full length height adjustment, so stroke is not sacrificed to go low
• Inverted and non-inverted setups
• One year warranty
• Rebuildable
• Supplied spring rates: 7K front, 5K rear

Inside the Damper

• 46mm pistons in 53mm shock housings for a broad damping range
• Spring steel valves with a patented deflective valve stack
• SAE9254 steel springs tested to over 500,000 compressions with under 5% deformation
• Polished steel piston rods for seal longevity
• Two step nickel and chromium plating to resist corrosion
• Low aeration, low cavitation shock oil
• Extra bearing under each pillowball mount for smooth action and longer mount life

Fitment

Mazda MX-5 Miata 1989 through 2005, NA and NB chassis.

Options and Lead Time

Request custom spring rates in the customer notes during checkout if the 7K/5K combination does not suit your use. The Extreme Low option, available for BR Series only, pairs a shorter strut body with altered spring rates for a much lower ride height. Extreme Low kits for the MX-5 are normally in stock and ship the same or next day.

NA and NB Notes

Both generations share suspension geometry, which is why one kit covers 16 years of production. Plan an alignment after install and use the pillowball camber adjustment to set negative camber for track days.