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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
CRF450 Crank and other important parts
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[QUOTE="Rich Rohrich, post: 725468, member: 16241"] If the bore is still round, doesn't show signs of taper, and doesn't have damage to the plating you should be OK. Depending on how the bore looks it may be worthwhile to have it diamond honed to ensure good ring sealing. Two seasons on a crank can be a lot or a little depending on the rider and maintenance schedule. If you are going SuperMoto racing you'll spend alot of time at high rpm, so there is a lot of stress on the crank/rod assembly and any weakness will show up in a hurry. If you aren't sure it's worthwhile to rebuild or replace the crank and main bearings. Cranks are relatively cheap, and it's good insurance. Even if you don't change the crank you should check the main bearing retainer plate screws. They have a nasty habit of backing out over time. The higher compression Wiseco is a nice upgrade and it's about 1.5 grams lighter than the OEM piston. Hot Cams has a new cam for the bike but we haven't tested it yet, or had a chance to compare it to the OEM Honda 2004 cam. I'll have some detailson this in the future. The Thunder Alley exhaust is an inexpensive upgrade and fills in the low to mid portion of the torque curve nicely. In my opinion there are better ways to spend your money than a PowerNow. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
CRF450 Crank and other important parts
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