





Here is the complete lower engine kit offered by BIHR for your 2003–2013 Yamaha YZF 250cc 4-stroke.
This kit includes a complete engine gasket set, reinforced C3 bearings, and a HOT RODS forged crankshaft. You can complement it with the oil seal kit. This will give you a solid, high-quality foundation so you won’t have to disassemble your lower engine frequently.
BIHR We’ve selected the best products on the market to create an excellent, high-quality kit for you at the best prices.
The crankshaft is forged from the highest-quality steel available. It is precision-fit and balanced to ensure enhanced reliability under all conditions.
The connecting rod features a heat-treated crankpin and a reinforced silver-plated needle bearing cage. You can therefore install this reinforced crankshaft on the stock engine as well as on a big-bore kit, for example.
The bearings are identical to the original ones. They’re manufactured to the same quality standards to ensure optimal reliability for your machine.
The gasket pack includes all the gaskets you need to rebuild your engine from scratch.
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