XB9/XB12
Performance Kits

Tired of the headache of trying to piece together engine packages that may or may not work the way you planned? We have done the research for you and even packaged the proper components at significant savings over buying them separately! Each of these kits has not only proven itself on the dyno but in the real world also!

For the really BIG horsepower numbers, Stage 3 kits are available in bigger bore sizes. These kits are custom tailored to your needs and budget so call for details

Bolt-On Big
Bore Kits
XL/Buell Bolt-On Big Bore Kit photo

All Revolution™ cylinder and piston kits come complete with our one piece, all aerospace grade aluminum nickel-silicon carbide plated bore cylinders, complete forged piston kit and head and base gasket kit! Our industry leading lifetime warranty applies to all our cylinders! Now come and get’m!

Description Contents Style Price (U.S.)
XB12 Bolt-on big bore kit, 1250cc 3-9/16 bore Revolution cylinders 10.5:1 forged pistons, pins, clips, rings head & base gaskets Black 201-520W
Silver 201-519
$999.95
XB9 Bolt-on big bore kit, 1050cc 3-9/16 bore Revolution cylinders 10.5:1 forged pistons, pins, clips, rings head and base gaskets Black 201-516
Silver 201-512
$999.95
Monster Big Bore Kits XL/Buell Monster Big Bore Kits photo

All require case boring.

Description Contents Styles Price (U.S.)
XB12 Big bore kit, 90" (1474cc) **15 Degree Combustion Chamber Machining Required** 3-7/8" bore Revolution cylinders 10.5:1 forged pistons, pins, clips, rings head and base gaskets Black 201-521
Silver 201-522
$999.95
XB9 Big bore kit, 1170cc 3-13/16 bore Revolution cylinders 10.5:1 pistons, pins, clips, rings head and base gaskets Black 201-518
Silver 201-517
$999.95
Power Packages  
Throttle body not included.
Description Contents Cylinder Styles Price (U.S.)
XB12 Stage 2 Engine Kit, 1250cc
  • 3-9/16 bore Revolution cylinders
  • 10.5:1 pistons, pins, clips, rings
  • 1.85 Cylinder Head prep
  • Complete Top End Gasket Set
  • Chromoloy Adjustable Pushrods
Black or Silver $3650.95
XB12 Stage 3 Engine Kit, 1250cc
  • 3-9/16 bore Revolution cylinders
  • 10.5:1 pistons, pins, clips, rings
  • 1.9 Cylinder Head prep
  • Complete Top End Gasket Set
  • RP610 Camshafts
  • Chromoly Adjustable Pushrods
Black or Silver $4299.95
XB12 Stage 3 Engine Kit, 90" - (Case Boring Required)
  • 3.875" bore Revolution cylinders
  • 10.5:1 forged pistons, pins, clips, rings
  • head and base gaskets
  • 1.9 Cylinder Head prep
  • Complete Top End Gasket Set
  • RP610 Camshafts
  • Chromoly Adjustable Pushrods
Black or Silver $4320.00
XB9 Stage 2 engine kit, 1050cc
  • 3-9/16 bore Revolution cylinders
  • 10.5:1 pistons, pins, clips, rings
  • 1.85 Cylinder Head prep
  • Complete Top End Gasket Set
Black or Silver $2166.80
XB9 Stage 3 engine kit, 1050cc
  • 3-9/16 bore Revolution cylinders
  • 10.5:1 pistons, pins, clips, rings
  • 1.85 Cylinder Head prep
  • Complete Top End Gasket Set
  • Chromoloy Adjustable Pushrods
Black or Silver $4299.95

XB9 Stage 3 Engine Kit, 1170cc - (CASE BORING REQUIRED)

Custom pistons are required. Please allow 6-8 weeks.

  • 3-13/16" bore Revolution cylinders
  • 10.5:1 forged pistons, pins, clips, rings
  • head and base gaskets
  • 1.9 Cylinder Head prep
  • Complete Top End Gasket Set
  • RP610 Camshafts
  • Chromoly Adjustable Pushrods
Black or Silver $4320.00