RBM has a wide selection of both Gen1 and Gen2 Hayabusa Overbore Cylinders In Stock for Exchange in 83mm, 84mm,and 85mm.
*RBM is NO longer offering GEN2 Cylinders in 84 or 85mm due to there weak castings 83mm ONLY

• Old nickel plating is stripped and removed
• Bored by Millennium Technologies using the finest cutting equipment available
• Re-plated using Millennium Technologies Nickel Silicon Carbide coating technology
• Diamond Honed for superior surface finish
• Finished block's are in stock and ready to ship in 83,84,85mm

*A cylinder core exchange is required for this item and must match the cylinder you wish to receive.
*You send in a Gen1 you get a Gen1 in return. You send Gen2 you get a Gen2 in return.
*Your core exchange must be received in good condition before the finished block can be shipped.
*** NOTE IF YOUR CORE HAS ANY SURFACE DAMAGE YOU WILL BE CHARGED A SURFACE CHARGE OF $160**
*It is the customers responsibility to remove and keep all plugs, dowel pins, screws, and/or fasteners before shipping us your old block.

Cores for exchange must meet the following conditions:**
**No broken or cracked skirts
**No detonation or head surface damage
**No Over-Sizes, MUST be OEM stock specs
**No pry marks or base surface damage

**Quantities are not guaranteed. Products may be on backorder from manufacturer. Special order and custom items are subject to wait times for production.**