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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Thinking of going from a 250f to a 450f
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[QUOTE="bwood, post: 1290040, member: 52787"] If you do go with the 03 CRF, change the cam chain tensioner to the newer style (04-up 450/250). The 02-03s had the tensioner with the phillips head screw and they were known to fail and allow the cam chain to slack and mess up timing and occasionally an engine, the newer models use a hex bolt (8mm head). Honda Part #15420-MEN-671 $43.11 through ServiceHonda.com [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Thinking of going from a 250f to a 450f
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