2001 Yamaha Big Bear 400 Engine
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Wiseco Top End Kit
Wiseco Top End Kit Wiseco-forged high-silicon aluminum alloy pistons are computer-machined to exacting tolerances Designed for greater strength with reduced weight and improved heat transfer Piston k
Moose Racing Complete Gasket Set
Moose Racing Complete Gasket Set All gaskets needed for engine rebuild are included in each set with the exception of oil seals Unmatched reliability and performance from high-tech materials Design
Vesrah Racing Engine Valves
Vesrah Engine Valves Vesrah valves are precision manufactured from top-quality materials to match OEM valves Sold Individually **Closeouts are limited to stock on hand**
Replaced the top end on my 96 cr125r! Fit great perform well but the price is the problem. For 70-80 bucks they'd be perfect!
Cooper (Russellville, IN)
I put it all together very easily, but it blew up in less than 24 hours of installation!
Ordered my wiseco bottom end kit and everything fell together. Fired up second kick, now first time everytime! I will run it very gently, because that is absolute key in a good engine as some do thrash and wonder why the cranks snapped or flattened bearings!!
Just tops off any bike to become better. I love it!!
nice fit always...
Good Quality. Fitment issues.
This kit comes with everything you need but unfortunately came with the wrong size valve seals. Note, the bike I bought this for is a 2004 Honda CRF250x. Anyway, after some time on the phone new valve seals were shipped to me next day from Vance & Hines who actually puts the kit together. The valves and springs are made by Fraction MX so the quality is superb. Anyway, I still recommend this product for the build quality.