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Supertech Low Expansion Performance Pistons (84mm, 9:1) - Mazda MX-5 1.8L


RRP: $661.85

Special Price $551.54

Available from SupplierDispatched in 4-9 Working Days
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Supertech engineers have more than 40 years of experience in the design and production of racing pistons.Utilizing the latest in CAD software & Finite Element Analysis (FAE) which enables us to design a strong, light weight and high performance piston.

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Part Description:

Supertech Pistons are manufactured from extruded high silicone, enhanced 4032 alloy (with additional Cu, Ni & Mg) that had low thermal expansion, excellent wear resistance and higher thermal conductivity. Supertech Pistons, with this alloy, have withstood up to 42psi of boost, with alcohol, without any problems.A two or three step forging process yields a fine structural grain which are then submitted to several machining steps in state of the art CNC machines.Several heat treatments provide the piston with high tensile strength and evenly distributed hardness.Contact reduction grooves are standard, and pin bores are honed and reamed for precise fit. Wrist pins are constructed of cold extruded chrome moly steel for high strength and used with wire clip locks. Finally, the pistons receive a 'phosphate dry lubricant' coating to protect the rings against 'micro-welding' and enhance lubrication on the skirt/cylinder area. Compression ratios are computed with .030" head gasket and .010" deck unless indicated in each case.

  • Bore: 84.00mm[1mm+ Oversized]
  • Comp Height: 1.208" (30.7mm)
  • Comp Ratio: 9:1
  • Dome/Dish Volume CCs: -4
  • Pin Diameter: 20mm (.787")
  • Pin Weight: 73.4grams
  • Piston Weight: 317grams
  • Rod Length: 5.228"
  • Skirt Style: Round
  • Stroke: 3.346"

Please note a generic image has been used

Package Details:

28cm (10.8")
24cm (9.4")
10cm (3.7")
Actual Weight
1.90kg (4lb 3oz)
Dimensional Weight
1.17kg (Air Freight Minimum)

All weights/dimensions have been checked and confirmed by our warehouse team. This part is eligible for international express air freight shipping.

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Vehicle Fitment

This fitment information has been checked and reviewed by our staff.

Car Model Years Type/Chassis Engine
Mazda MX-5 Mazda Emblem 1989-1997 NA BP (1.8L)
Mazda MX-5 Mazda Emblem 1998-2005 NB BP-4W (1.8L)
Mazda MX-5 Mazda Emblem 2006-2014 NC MZR (1.8L)