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SuperMiata RTK24
SuperMiata RaceTwin Clutch 90-05 Miata K24
Race Clutch
Price: From $740.00 to $1,790.00

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Disc type:

Detailed Description

SuperMiata Racetwin
for K24 engine

The SuperMiata twin disc RaceTwin just drops right in to your Kmiata swap kit mated to the factory Miata 5 or 6spd transmission. No mods to trans, slave cylinder, or fork needed. 

Approximate torque capacity
550 ft-lbs Ceramic Metallic
440 ft-lbs Kevlar/Carbon 
Flywheel 8 lbs
Total system weight (including flywheel) 16.8 lbs

Why Twin discs?

Adding a second disc doubles the surface area which doubles torque capacity for a given clamp load. The OEM clutch has about an 18lb pedal. The twin is about 45lbs. Heavier but not difficult to manage. The 4 ceramic metallic pucks bonded directly to the drive plate. Very light, thin and durable. 


 The engagement point is much narrower than an OEM style clutch. Once you get used to it you can launch quickly, modulate and shift faster. It can be daily driven, slipped to pull onto the trailer slowly or into a tight parking spot. Learn to operate the clutch with your heel on the floor and just flex your ankle to slip to make this easier.

MOI (Moment Of Inertia)

The further from the center of the shaft centerline you add mass, the more energy it takes to change its speed (higher MOI). Higher MOI reduces shift speed, makes your syncros works harder and the enegine less responsive.  By removing away any unnecessary flywheel material outside the friction surface, the MOI of our racetwin is further reduced. The standard Kmiata flywheel and typical BP clutch have approximately 150% more inertia than the Supermiata K24 RaceTwin.

Pedal travel
The twin can be installed as is with no modifications to pedal travel. For quickest actuation however, you can adjust the upper pedal stop downward (cruise control switch) and engagement point (pushrod) to shorten total pedal travel. 


  • CNC aluminum one piece clutch cover
  • Heat treated steel diaphragm springs
  • 12.9 rated hardware throughout
  • 6061 T6 billet flywheel
  • One piece 4140 steel ring gear
  • Replaceable steel friction surface
  • Includes throwout & pilot bearing, pilot tool
  • Fits all K24A2 & K24Z3 engine with Kmiata transmission adapter and Miata 5 or 6spd transmission

Note: Not compatible with any BMW transmission

NOTE: 250 ft-lbs Organic, single disc : N/A track cars, low boost F/I track cars 11.7 lbs400 ft-lbs Ceramic, single disc : Drift- F/I track cars, F/I drag  11.9 lbs

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