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The BOYESEN valve diaphragms have been specially developed for each engine model
it is necessary to manufacture rear and front sprockets according to the chain type
Compatible with all S3 cylinder heads
bellows and rings required for the overhaul
Back pad certified to EN1621-2 Level 1
RACETECH wit voorspatbord Yamaha YZ125/250 The BOYESEN valve diaphragms haveRACETECH is a worldwide known specialist for plastic kits for MX and Enduro bikes. Their products are made from injected plastic and are the favorite choice for many teams in MXGP. OEM type Same as used in MXGP High UV resistance
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