Yamaha Banshee 4-mil stroker crankshaft with 115 mm long rods. 

Features: 

1. Forged 4-mil stroker crankshaft.
2. 115 mm long connecting rods. 
3. Upper and lower rod bearings are high quality silver caged.
4. Trued and welded.
5. KOYO 8 ball bearings on both the inner and outer bearings.
6. KOYO bearings are the best bearings you can get. The 8 ball is a high speed bearing that can handle a Banshee's high RPMs.
7. Every crank is inspected for proper rod clearance. 
8. Center webs are pinned so the crank won't twist out of phase. 
9. This is a drop in crankshaft. No stock case modifications are needed. 
10. The 4-mil 115 rod crank requires the use of Wiseco series 795 pistons, along with custom stroker domes or aftermarket cylinders designed for the 4-mil, 115 mm rod crankshaft - depending on your specific set-up.