OMEGA 998 FORGED LIGHTWEIGHT FLAT TOP PISTONS

OMEGA 998 FORGED LIGHTWEIGHT FLAT TOP PISTONS

Part No: MED-1029-FF
Regular price £512.50
Regular price Sale price £512.50 £427.08 EXC VAT
Sale
Availability: Out Of Stock
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Description

The MED/Omega forged 998 semi-slipper piston is perfect for high performance small-bore engines, the plus-0.020" particularly successful in the Mini Se7en race series, and plus-0.040" in Ministox and autograss. 

CNC machined from lightweight alloy forgings, the pistons have been designed to be as light as possible, at only 236 grams for the 020 including 5/8" pin and rings.




Tech spec



  • +0.020" and +0.040" sizes for the 998cc engine

  • Super lightweight semi-slipper design

  • High strength for full competition usage 

  • Flat-top crown

  • Made in the UK exclusively for MED

  • Lightweight 5/8" floating gudgeon pins




Please see the additional information tab for more detail and advice. 


For use with either fixed or fully floating pins and supplied with a set of special wire circlips. Spare forged 998 ring sets are also available and in stock.


Supplied as a balanced set of four with gudgeon pins, clips and piston rings, which are also available separately. 

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Additional Information

 

 

Production process

High silicone alloy is first cut to billet size and the faces machined to a smooth finish. Each billet is pre-heated in an air-circulating furnace to a temperature close to the operating temperature of the piston crown, then compressed into a rough shape using Omega's in-house forge and custom-designed dies.

The specific temperature, together with tightly controlled speed of the forging process, gives a dense and very fine grain structure to the piston for high strength and superior fatigue life.

Any excess material is then removed before the forgings are heat-treated and wet blast cleaned. From here each piston is subject to a highly developed process of CNC machining, with constant measurement and quality control checks by experienced perfectionists. 

Once final machining is complete, the pistons are engraved with a model and batch number, cleaned and sorted into matched weight sets. It's a time-consuming process to create such a high quality product, but the end results are well worthwhile.