Harley-Davidson CVO ULTRA LIMITED Big Bore Kits
Genuine HD big bore kits and aftermarket alternatives that fit the CVO ULTRA LIMITED — all years. Select your year for exact fitment and pricing.
Genuine Harley-Davidson (4)
Genuine Harley-Davidson
3-7/8" Standard Bore Piston Kit
22144-08B
Genuine Harley-Davidson
Screamin' Eagle 4-Inch Big Bore Conversion Kit
92500039
Genuine Harley-Davidson
Big Bore Head Gasket Kit
16101-01
Genuine Harley-Davidson
Screamin' Eagle MVA CNC Ported Cylinder Heads
16925-11Aftermarket for your CVO ULTRA LIMITED
Confirmed to fit your CVO ULTRA LIMITED
Aftermarket big bore kits the supplier lists against the CVO ULTRA LIMITED. Genuine Harley-Davidson is listed above, not here.
S&S
Piston Kit Big Bore 4.250" for M8 Models<br><ul><li>The Piston Kit Big Bore for M8 models is built for durability and consistent performance</li><li>These forged aluminum pistons are machined for precise tolerances, offering dependable compression and long service life</li><li>Designed with installability and reliability in mind, the kit supports routine maintenance and engine upgrades while helping maintain smooth operation under varied riding conditions</li></ul>
S&S
136" Big Bore Cylinder Kit<br><ul><li>Bolt on kit, the largest cylinder bore possible without requiring machining of crankcases</li><li>Includes MLS (multi-layered steel) head gaskets and cam cover badge</li><li>S&S stroker 4.625" flywheel required and is sold separately</li><li>Takes 107"/114"/117" to 136" displacement</li><li>Original engine serial numbers are retained</li><li>Retains stock engine height</li><li>Made in the USA</li></ul>
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
BIG BORE KIT - M8 17-UP - 132/
S&S
128" Power Package Engine Performance Kit<br><ul><li>Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required</li><li>4-1/4" bore cylinders with 11:1 forged pistons</li><li>S&S oil pump/cam plate with blue anodized finish</li><li>Passage plugs are removable for servicing</li><li>Independent scavenge sections for flywheel cavity and cam chest</li><li>Debris screen in both scavenge pickups</li><li>Magnet in cam chest to help prevent debris from entering the oil pump</li><li>Increased oil flow capacity on both the oil feed and scavenge side</li><li>Adjustable pressure relief valve can be adjusted with the unit installed in the engine</li><li>Quickee pushrods with chrome pushrod tubes</li><li>S&S premium tappets</li><li>S&S hard-anodized, black coated tappet cuffs are billet aluminum construction</li><li>Improve tappet stability in high-lift, high-rpm situations</li><li>S&S 550 cams designed for big bore applications</li><li>S&S valve springs work with cams up to .605" lift</li><li>High-performance conical single-wire spring design</li><li>All necessary gaskets, bearings, and hardware for bolt-on installation is included</li><li>Made in the U.S.A.</li></ul><br>Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.