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Engine & Speed Shop » M8 Engines » Big Bore Kits

For Your Harley-Davidson®
For Your Indian Motorcycle®
Image
SKU
Product
Status
Price
132” Power Pack Kit for Water Cooled M8
In Stock
  • Transform the 114" or the 117" water-cooled M8 into 132"
  • Adjustable pressure relief valve can be adjusted with unit installed in the engine
  • S&S valve springs feature high-performance conical single-wire spring design
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Big bore cylinders are matched with cam/cam plate and oil pump
  • Passage plugs are removable for servicing
  • Original engine serial numbers are retained
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Retains stock engine height
  • Includes cam cover badge
  • Made in the USA
More...
$5,212.34 CAD
 
MAXX CASH Information
$104.25
129" Power Pack Kit for Oil Cooled M8
In Stock
  • Transform 107" oil-cooled M8 into 129" with no case machining required
  • Big bore cylinders come with matching cam, cam plate and oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Feature high-performance conical single-wire S&S valve springs
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Made in the USA
More...
$5,212.34 CAD
 
MAXX CASH Information
$104.25
Complete 129" Kit for Oil Cooled 107" M8
In Stock
  • Transform 107" oil-cooled M8 into 129" with no case machining required
  • Big bore cylinders come with matching cam, cam plate and oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Feature high-performance conical single-wire S&S valve springs
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Made in the USA
More...
$5,345.99 CAD
 
MAXX CASH Information
$106.92
129" Kit for 107" Oil cooled M8
In Stock
  • Transform 107" oil-cooled M8 into 129" with no case machining required
  • Big bore cylinders come with matching cam, cam plate and oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Feature high-performance conical single-wire S&S valve springs
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Made in the USA
More...
$6,311.95 CAD
 
MAXX CASH Information
$126.24
128" Power Pack Kit for 114" & 117" M8
S&S CYCLE
128" Power Pack Kit for 114" & 117" M8
In Stock
  • Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required
  • 4-1/4" bore cylinders with 11:1 forged pistons
  • S&S oil pump/cam plate with blue anodized finish
  • Passage plugs are removable for servicing
  • Independent scavenge sections for flywheel cavity and cam chest
  • Debris screen in both scavenge pickups
  • Magnet in cam chest to help prevent debris from entering the oil pump
  • Increased oil flow capacity on both the oil feed and scavenge side
  • Adjustable pressure relief valve can be adjusted with the unit installed in the engine
  • Quickee pushrods with chrome pushrod tubes
  • S&S premium tappets
  • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
  • Improve tappet stability in high-lift, high-rpm situations
  • S&S 550 cams designed for big bore applications
  • S&S valve springs work with cams up to .605" lift
  • High-performance conical single-wire spring design
  • All necessary gaskets, bearings, and hardware for bolt-on installation is included
  • Made in the U.S.A.
More...
$5,113.30 CAD
 
MAXX CASH Information
$102.27
136" Cylinder/Piston Kit
Out of Stock
More...
$2,836.95 CAD
 
MAXX CASH Information
$56.74
124" Power Pack
In Stock
More...
$4,825.80 CAD
 
MAXX CASH Information
$96.52
129” Power Pack Engine Kit
In Stock
  • Transform 107" oil-cooled M8 into 129" with no case machining required
  • Big bore cylinders come with matching cam, cam plate and oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Feature high-performance conical single-wire S&S valve springs
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Made in the USA
More...
$5,956.95 CAD
 
MAXX CASH Information
$59.57
132” Power Pack Engine Kit
Out of Stock
  • Transform the 114" or the 117" oil-cooled M8 into 132"
  • Adjustable pressure relief valve can be adjusted with unit installed in the engine
  • S&S valve springs feature high-performance conical single-wire spring design
  • Big bore cylinders are matched with cam/cam plate and oil pump
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • MLS (multi-layered steel) head gaskets
  • Debris screen in both scavenge pickups
  • Performance matched 550 cam
  • Works with stock crankcase
  • Retains stock engine height
  • Includes cam cover badge
  • Made in the USA
More...
$5,956.95 CAD
 
MAXX CASH Information
$59.57
132” Power Pack Engine Kit
In Stock
  • Transform the 114" or the 117" oil-cooled M8 into 132"
  • Adjustable pressure relief valve can be adjusted with unit installed in the engine
  • S&S valve springs feature high-performance conical single-wire spring design
  • Big bore cylinders are matched with cam/cam plate and oil pump
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • MLS (multi-layered steel) head gaskets
  • Debris screen in both scavenge pickups
  • Performance matched 550 cam
  • Works with stock crankcase
  • Retains stock engine height
  • Includes cam cover badge
  • Made in the USA
More...
$5,956.95 CAD
 
MAXX CASH Information
$59.57
132" Power Pack Engine Kit
In Stock
  • Transform the 114" or the 117" water-cooled M8 into 132"
  • Adjustable pressure relief valve can be adjusted with unit installed in the engine
  • S&S valve springs feature high-performance conical single-wire spring design
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Big bore cylinders are matched with cam/cam plate and oil pump
  • Passage plugs are removable for servicing
  • Original engine serial numbers are retained
  • Debris screen in both scavenge pickups
  • MLS (multi-layered steel) head gaskets
  • Performance matched 550 cam
  • Works with stock crankcase
  • Retains stock engine height
  • Includes cam cover badge
  • Made in the USA
More...
$4,964.13 CAD
 
MAXX CASH Information
$49.64
132” Power Pack Engine Kit
In Stock
  • Transform the 114" or the 117" oil-cooled M8 into 132"
  • Adjustable pressure relief valve can be adjusted with unit installed in the engine
  • S&S valve springs feature high-performance conical single-wire spring design
  • Big bore cylinders are matched with cam/cam plate and oil pump
  • Magnet in cam chest to help prevent debris from entering oil pump
  • Independent scavenge sections for flywheel cavity and cam chest
  • Original engine serial numbers are retained
  • Passage plugs are removable for servicing
  • MLS (multi-layered steel) head gaskets
  • Debris screen in both scavenge pickups
  • Performance matched 550 cam
  • Works with stock crankcase
  • Retains stock engine height
  • Includes cam cover badge
  • Made in the USA
More...
$5,956.95 CAD
 
MAXX CASH Information
$59.57
124" Big Bore Kit, 4.250 Bore, 4.375 Stroke,
In Stock
  • Big Bore kit yields excellent results with stock cylinder heads
  • Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
  • Cylinders are constructed from premium aluminum castings with cast-in iron liners
  • Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Made in the U.S.A.
  • Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
More...
$2,154.13 CAD
 
MAXX CASH Information
$21.54
124" Big Bore Kit,
In Stock
  • Big Bore kit yields excellent results with stock cylinder heads
  • Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
  • Cylinders are constructed from premium aluminum castings with cast-in iron liners
  • Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Made in the U.S.A.
  • Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
More...
$2,310.84 CAD
 
MAXX CASH Information
$23.11
128" Big Bore Kit
In Stock
  • Big Bore kit yields excellent results with stock cylinder heads
  • Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
  • Cylinders are constructed from premium aluminum castings with cast-in iron liners
  • Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Made in the U.S.A.
  • Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
More...
$2,174.91 CAD
 
MAXX CASH Information
$21.75
Big Bore Cylinder Set
Out of Stock
  • Bolt-on cylinder set
  • Bored slightly under nominal size and are not honed
  • Made in the U.S.A.
More...
$1,257.62 CAD
 
MAXX CASH Information
$12.58
128" Big Bore Kit
In Stock
  • Big Bore kit yields excellent results with stock cylinder heads
  • Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
  • Cylinders are constructed from premium aluminum castings with cast-in iron liners
  • Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Made in the U.S.A.
  • Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
More...
$2,151.63 CAD
 
MAXX CASH Information
$21.52
129" Big Bore Kit with 4.375" Stroke
In Stock
  • Bolt-on without requiring machining of the crankcase
  • Original engine serial numbers are retained
  • Powder coat finish matches factory finish
  • MLS (multi-layered steel) head gaskets
  • Retains stock engine height
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,507.56 CAD
 
MAXX CASH Information
$25.08
129" Big Bore Kit with 4.375" Stroke
In Stock
  • Bolt-on without requiring machining of the crankcase
  • Original engine serial numbers are retained
  • Powder coat finish matches factory finish
  • MLS (multi-layered steel) head gaskets
  • Retains stock engine height
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,392.61 CAD
 
MAXX CASH Information
$23.93
132" Big Bore Kit with 4.5" Stroke Highlighted Cylinders
In Stock
  • Bolt-on without requiring machining of the crankcase
  • Original engine serial numbers are retained
  • Powder coat finish matches factory finish
  • MLS (multi-layered steel) head gaskets
  • Retains stock engine height
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,409.61 CAD
 
MAXX CASH Information
$24.10
132" Cylinder Kit
S&S CYCLE
132" Cylinder Kit
M8, Black
In Stock
  • Bolt-on without requiring machining of the crankcase
  • MLS (multi-layered steel) head gaskets
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,336.32 CAD
 
MAXX CASH Information
$23.36
136" Cylinder Kit
In Stock
  • Bolt-on without requiring machining of the crankcase
  • MLS (multi-layered steel) head gaskets
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,364.13 CAD
 
MAXX CASH Information
$23.64
136" Cylinder Kit
S&S CYCLE
136" Cylinder Kit
M8, Black
In Stock
  • Bolt-on without requiring machining of the crankcase
  • MLS (multi-layered steel) head gaskets
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,364.13 CAD
 
MAXX CASH Information
$23.64
132" CVO Cylinder Kit
Out of Stock
  • Bolt-on without requiring machining of the crankcase
  • MLS (multi-layered steel) head gaskets
  • Includes cam cover badge
  • All necessary gaskets and hardware required for installation is included
  • Made in the U.S.A.
More...
$2,560.21 CAD
 
MAXX CASH Information
$25.60
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