97" Big Bore Kits for 99-06 Twin Cam
Click To Enlarge
  • The 106" Big Bore kit yields excellent results with stock cylinder heads
  • Feature the largest bore (3.927") that can safely be used in a cylinder with stock spigot diameter
  • Even though stock cylinders can be bored to fit the 3.927" pistons, the included S&S cylinders feature a much stronger liner to stand up to the added power
  • Easy installation: no need to bore or split existing cases, just swap the cylinders
  • Specifications: 3.927" bore, 43/8" stroke, 106" displacement, 10:1 compression ratio with stock heads (9.7:1 compression ratio with S&S 89cc heads)
  • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Black or silver powder-coat finish
  • Made in the U.S.A.

NOTE: This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications

  • Item #: r6c0931-0436-37

97" Big Bore Kits for 99-06 Twin Cam

Price: $929.95
* Marked fields are required.
Availability: In-Stock
Qty: *