Athena Big Bore Piston

• Product Details

  Athena Big Bore Piston.

  Athena, leader in producing motorcycle spare parts for over 40 years, unveils its new range of 2-stroke and 4-stroke off-road cast pistons and forged pistons made by reverse extrusion. Produced with cutting-edge CNC machining tools, which ensure dimensional tolerances of less than 0.01 mm, Athena pistons are made of a special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the O.E. piston, while at the same time providing greater resistance and excellent performance. The perfectly smooth profile ensures a regular flow and the perfect flame propagation.

  Some pistons' skirts are moreover treated with a molybdenum disulfide coating applied by screen printing which further reduces friction to enhance performance and durability.

  Athena engineers ensure advanced technical solutions and the highest quality standards equal to or better than those adopted in O.E. production, so as to guarantee performance and reliability.

  Each piston, engineered in Italy by Athena R&D department, is tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate its performance even in the most extreme conditions.

  The proven quality of Athena pistons is offered at an extremely affordable price.

  This piston for Athena Big Bore Cylinders is equipped with piston rings that guarantee less friction with the cylinder and therefore a higher performance.

  Athena takes care of the development of the pistons down to the smallest detail: the rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase the retain and the durability. The rings perfectly adapt to the cylinder liner even at low tangential load.

  This piston kit contains the piston, the pin, the circlips, and the piston rings. All components are replaceable and interchangeable in case of need.

  • High performance and pourability.
  • Reduced friction and noise.
  • Enhanced resistance and durability.
  • Geometries and crown realized with CNC machines for a perfect design.
  • Skirt with self-lubricating and anti-seize coating.
  • Steel alloy pin with hardening treatment.
  • Made-in-Japan rings with anti-wear treatments.
  • Tested on benches and on track by professional riders.
  • Note: Piston and directly related parts ONLY; all other parts sold separately.

  Notes: All Athena products produced in greater displacement and power than those provided by the road code of the user's country, are intended exclusively for competitive use. Athena declines all responsibility for any use of the product contrary to national regulations. Guarantee of compliance should not be applicable to products destined for competitive sports use or which are used in high-performance or high-speed applications unless it is a clear case of faultiness.

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• Fitment

• # Part Numbers

  Product Variant	Manufacturer Part #
  105cc/112cc	S5F05300001A
  106cc / A piston	S5F05300001A
  106cc / B piston	S5F05300001B
  130cc	S4C05700001A
  144cc	S4C05800002A, S4C05800001A
  144cc / B Piston	S4C05800001B
  164cc	S4F069000030
  276cc / A Piston	S4F08200005A
  276cc / B Piston	S4F08200005B
  280cc	S5F08200002B, S5F08200001A, S4F08000004A
  283cc / A Piston	S5F08200003A
  283cc / B Piston	S5F08200003B
  290cc	S5F08300003A, S5F08300006A
  290cc / A Piston	S5F08500001A
  290cc / B Piston	S5F08500001B
  290cc, A Piston	S5F08300005A
  290cc, B Piston	S5F08300005B
  293cc	S4F07200006A
  293cc / B Piston	S4F07200006B
  300cc / A Piston	S5F08500006A
  300cc / B Piston	S5F08500006B
  304cc / A Piston	S5F08500005A
  304cc / B Piston	S5F08500005B
  435cc	S4F09400002A
  450cc / 99.96mm, B Piston	S4F10000007B
  470cc / A Piston	S4F09800011A
  470cc / B Piston	S4F09800011B
  478cc	S4F09800006A, S4F09800005A
  480cc	S4F09700010A
  490cc	S4F100000180, S4F10000007A, S4F10000011A, S4F1000001, S4F10000012A, S4F100000170
  80cc	S4C05000013A, S4C05000001A
  80cc / B Piston	S4C05000001B

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