New genuine Cylinder Works standard bore front & rear cylinder with Namura top-end kit with pistons & gasket kits. (See chart for year & model fit).

We only sell quality name-brand parts you can TRUST; don't destroy your motor with off-brand junk.

• No core returns are required; it is Brand new, NOT rebuilt
• New front & rear Cylinder Works Nikasil coated cylinders (85.0 mm Standard Bore)
• Namura top-end kit including:
  • Two standard-size Namura pistons with Teflon/Molybdenum coated skirts for increased heat transfer & reduced friction (84.95 mm)
  • Two-top end gasket kits (as pictured)
  • Two sets of piston rings, wrist pins, and circ clips
• Meets or exceeds OEM specifications.

NOTE: Refer to your repair manual for proper installation and break-in procedures

Please ensure your model and year are listed below for proper fitment.
This part will ONLY work on models and years listed below:

Not 100% positive of your model year? See the last picture for our VIN decoder chart.