Good-Win Racing Mazda Performance Parts

Ground Control Miata Coilover Conversion 550/350 for Koni

1999-2005

Miata 1990-2005 · Suspension · Coilovers


Part Number: 20-10679

Application: 1999-2005

Price: $429.00

Quantity:

Ground Control Miata Coilover Conversion 550/350 for Koni
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Adjustable coil-overs allow easy adjustment of Miata ride height and the ability to adjust the weight at each corner. With this simple sleeve design, any shock can now be a race ready coil-over.

Ride height is adjustable from stock to 2" lower and more. All aluminum CNC manufacturing makes for light weight parts with smooth and precise adjustment. Performance shocks are recommended. Hardcore CSP kit, 99-05.

These drop ship direct from Ground Control and they consider this spring combo a custom order spring rate which means you should assume about two weeks ordering time if we don't have it on shelf (feel free to ask).

Also, note that this non-standard rate Ground Control Kit is TOO MUCH spring for standard off-the-shelf Miata KONI sports or Miata KYBs or Tokicos. You can either use our Miata KONI RACE shocks which are on this website or you can have standard Miata Koni Sports re-valved for the purpose. TELL US IF YOU DON'T HAVE KONI SHOCKS!!!!

*** Product images may differ from actual product appearance ***

REVIEWS

Good morning Brian, I finally got a chance to put the exhaust on, great advice, it's just loud enough, solid product. I'm running without the baffles, sounds great in power band. Take care, you have all my future upgrade business.........regards.

-- John S.

After reading many other positive reviews on both the GWR and Miata forums I finally decided to buy this product. My main concern for many months was whether or not I was up to the task of installing the header. But with the excellent instructions on Brian's forum as well as several Miata forum threads it turned out easier than I expected. After receiving notice that the header would arrive on a Friday afternoon, I began the disassembly process. After about 3 hours I had the stock manifold out. Later that afternoon the new catted header arrived right on schedule. And it is a thing of beauty. I opted for the stainless version. Installation on Saturday morning took another 3 hours, although I could have shaved some time off of that but I was actually enjoying the process of double checking torque values and cleaning up my engine compartment. I already have the GWR catted midpipe, so that connection was a snap. I put everything back together, reconnected my battery, and went for a drive. NO CODES! Nice throaty sound with my RSII muffler, and a significant boost in power and low/mid torque. Another happy camper here. I since have added a M-E tune and I feel I have realized all of the gains that Brian has achieved on his 2012 project Miata. I've put several hundred miles on my Miata since the install with zero problems. This is the car that Mazda should have built all along. Thanks Brian.

-- Ron P.