METEOR PISTON KIT FOR YAMAHA 4T YZ250F YZ 250F 2016 2017 ORIGINAL COMP SIZE B

YAMAHA 4T Meteor Piston Kits > YZ250F YZ 250F 2016 2017 ORIGINAL COMP SIZE B

- FORGED CONSTRUCTION

PISTON KIT INCLUDES PISTON, PISTON RING(S), PISTON GUDGEON PIN, PISTON CLIPS

- Quality alloy with High Silicon percentage providing reduced coefficient of expansion and constant piston geometries

- Special surface roughness designed to collect oil from cylinder's walls.

- Made in Italy (Piston rings in steel Made in Japan).

Recommendations Prior to fitment of 2 stroke or 4 stroke pistons. The fitment of this type of product will require: - A high level of mechanical skill - Specialty tools to install. - OEM service manual We strongly recommend that the steps below be undertaken prior to running the motor. Failure to follow these steps may lead to engine failure due to negligence of the person responsible for installation. The cylinder will need to be measured to ensure correct piston to cylinder clearance as per OEM manual. The ring gap will also need to be measured to ensure that clearance is correct as per OEM manual. We also recommend assembling engine with “clay” or similar means to ensure that piston head to cylinder head clearance is adequate and with OEM specifications. We recommend the use of an hour meter to ensure correct service intervals occur as per OEM specifications. Other modifications including but not limited to: aftermarket or altered ignition systems, cylinder porting and cylinder head modifications may make this product not suitable for your motorcycle please consult a professional prior to purchase.