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Key features

  • Controlled revsThe high compression design supports engine preparations, while the anti-friction treatment limits friction and wear.
  • Forged aluminiumIts homogeneous material promotes stable engine behaviour. The anti-friction treatment of the skirt reduces friction during revs.
  • Designed for motocrossThis kit is suitable for motocross and off-road use, particularly on YAMAHA YZ 250 F CG27/CG33 from 2009 to 2011. Check references before installation.
Ref : 8713DA / 1093817001
Wossner

Wossner Complete forged A-rib Piston kit

Recommended retail price: 211,00 €200,40 €

Compatibility

Check that this part fits your motorcycle

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Key features

  • Controlled revsThe high compression design supports engine preparations, while the anti-friction treatment limits friction and wear.
  • Forged aluminiumIts homogeneous material promotes stable engine behaviour. The anti-friction treatment of the skirt reduces friction during revs.
  • Designed for motocrossThis kit is suitable for motocross and off-road use, particularly on YAMAHA YZ 250 F CG27/CG33 from 2009 to 2011. Check references before installation.

Features

Complete Forged Piston Kit Size A by Wossner

This forged aluminium piston kit is designed for motocross and off-road use, particularly on the YAMAHA YZ 250 F. Its high compression design and anti-friction treatment support engine tuning and reduce friction during revving.


Design and Materials

  • The forged aluminium construction provides a homogeneous material to promote stable engine behaviour.
  • The anti-friction treatment on the skirt minimises friction and wear during revving.

Usage and Performance

  • The high compression version is suitable for configurations intended for engine tuning.
  • The forged design meets the demands of motocross and off-road use.

Installation and Assembly

  • The piston diameter of 76.960 mm in size A helps select the part suitable for the engine bore tolerances.
  • The piston is supplied with ring(s), circlips, and pin to provide the necessary components for kit assembly.
  • Compatibility with the YAMAHA YZ 250 F is linked to engine references CG27 and CG33.
  • The size A and bore tolerances must be checked before installation to ensure proper assembly.
  • Manufacturer reference 8713DA

Examples of Compatible Motorcycles

  • YAMAHA YZ 250 F (CG27/CG33) (2009 - 2011)

    • Complete list of compatible motorcycles available in the dedicated section below