Engine Components

Description If you are looking for the option to build up your own 98" big bore kit, look no further. The Fuel Moto Extreme Duty cylinders with heavy Ductile iron sleeve are available in a 98 CI, 3.937" bore and does not require boring. Includes piston kit, new Extreme Duty Cylinders, MLS head gaskets, and OEM base O-rings.  The Fuel Moto 98" Extreme Duty Cylinder / Piston Kit includes the following:   Custom Fuel Moto / CP Carillo Forged Pistons These custom forged pistons from CP Carillo are available in a 10.0:1 compression ratio. The ring end gap is already set and are simply ready to be installed.  Fuel Moto Extreme Duty Cylinders The cylinders are a core component for reliability for any big bore kit and we offer the very best with the Extreme Duty Cylinders. These cylinders are designed for maximum durability and top level performance which feature a centrifugally cast ductile iron sleeve and are 100% made in the USA. You get to keep your OEM cylinders and the Extreme Duty Cylinders are used in their place with this kit. Cometic MLS .030" head gaskets and OE H-D base o-rings Years of testing have driven us to select only the best components. We have already performed in house stress tests to find the best performing parts to ensure your build is reliable for years to come. Cometic multi layer steel head gaskets with Harley-Davidson OEM cylinder base o-rings will form the best seal.

Description Note: we are currently experiencing longer than normal lead times due to extreme volume. For information please contact us at info@fuelmotousa.com  Fuel M8 Moto Level A CNC Cylinder Head Porting The Fuel Moto M8 Level A CNC cylinder head was developed through dyno & extensive flowbench testing to deliver excellent performance increases on H-D Milwaukee-Eight engines with an emphasis on broad power. The Fuel Moto M8 Level A heads are CNC ported from the the valve seat to the guide, new .580 lift valve springs, competition valve job, and work best on 117-128" engines in the 130-150Hp range. Requires larger throttle body & injectorsr (SE 64mm TB with CNC ported manifold recommended) and exhaust system that is designed & proven to support the horsepower level for this application. M8 Level A Cylinder Head Porting includes the following: CNC ported with an emphasis on broad torque & HP custom FM porting performed by Ward Performance Multi radius competition valve job New high silicon/vanadium Kobe alloy .580 lift beehive style springs Replacement of valve guide seals Re-machining of gasket surfaces Heads are thoroughly tested, valve seats are replaced if necessary 89cc combustion chamber Exchange with core charge or send in your heads to be serviced

Feuling Rocker Box Breather Kit Kit includes billet breather housings, gaskets, breather filter elements, umbrella valves, top rocker cover gaskets and ARP® hardware Machined from billet 6061 aluminum with square surfaces promoting excellent gasket and breather system sealing Properly sized breather holes for optimum engine breathing Made in the U.S.A.

S&S Precision Tappets Reduced valve train noise from start up to shut down Close tolerances for low leak down rates Fast pump up and superior high rpm performance Each Precision Lifter is hand assembled to exacting tolerances and designed for quiet operation and rapid pump up and all are made in the USA

S&S Piston Cooling Jet Kit For M-Series  Features: Milled from Billet Aluminum 6061-T6 Revised spray locations for more effective cooling Dual jets for uniform piston cooling Shorter than OEM for greater rod clearance Includes all needed gaskets and hardware Equivalent Oil Flow to stock

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peened Tight-tolerance, FEA-designed hardened steel Posi-Loc™ style upper retainers to ensure correct assembly height and resist keeper "pull through" Hardened steel basewashers control lateral movement Kits use OEM-style valve keys (sold separately) Made in the U.S.A.

S&S XL883 to 1200 Conversion Kit Increase displacement from 883cc to 1200cc Saves time because pistons are already fit to the cylinders - ready to assemble out of the box Cylinders are constructed from premium aluminum castings with cast-in iron liners No machining No re-balancing of 883cc flywheels No cylinder head modifications Big bore 3-1/2" cylinders 9.4:1 with stock 883cc heads Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) Made in the U.S.A.

S&S 1250CC Sportser Conversion Kit Forged pistons - coated piston skirts with measurement window and S&S logo Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves Kit includes S&S 1250cc pistons with rings and wristpins, S&S 3-9/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions Made in the U.S.A. 883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios.

Case Engine MK-Series Black M8 Touring The demand for performance-based bagger parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can't provide. That's where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock touring frame.

S&S Cam Chest Kits Precision Machined from Billet Aluminum Blue Anodized Finish Passage Plugs Removable for servicing Independent Scavenge Sections for Flywheel Cavity and Cam Chest Debris Screens in both scavenge pickups Magnet in Cam Chest to help to stop debris from entering oil pump Increased Flow Capacity on both Feed and Scavenge side Adjustable Pressure Relief Valve is adjustable with unit installed in engine Quickee Pushrods S&S Precision Tappets Hard Anodized Black Coating Billet Aluminum Construction Stronger than Stock Material eliminates Distortion Improve tappet stability in high lift and high rpm situations Includes all gaskets, bearings, and hardware required for installation Made in USA

S&S Cam Chest Kit Twin Cam  Upgrade to S&S bolt-in performance camshafts Improves engine performance - higher lift and optimized cam timing S&S Quickee pushrods - easy installation, without removing rocker covers Replaces stock oil pump, cam support plate, cams, chain tensioners, and tappets with all-new, premium U.S. made S&S components Gear-drive kits offer peace of mind - no more worries about cam chain failure Chain-drive kits include S&S Hydraulic Cam Chain Tensioners for improved valve timing and chain life Made in the U.S.A.

TTS Camshafts Twin Cam TTS camshafts are designed to provide smooth power delivery throughout your engine's entire operating range.The various grinds allow you to select a cam that optimizes torque in the rpm range you require without compromising performance elsewhere.

TTS Camshafts Milwaukee 8 TTS camshafts are designed to provide smooth power delivery throughout your engine's entire operating range.The various grinds allow you to select a cam that optimizes torque in the rpm range you require without compromising performance elsewhere.

Chris Rivas Rocket Cams Milwaukee 8 4 valves are better than 2!! the next progression of harley-davidson power is happening through four valves which have different requirements for the camshaft.Chris has come up with 4 new cam lobe profiles to squeeze the performance out of the smaller multivalve ports.Low lift 444, 464 and 474 cams are a direct bolt in application delivering the power where you expect it to be for your personal riding style.544 cam is for the builder that wants the best possible power in his big inch motor.As with all cam changes, a performance intake, exhaust system, and efi tuning are a must to get the full benefit from the cams.Many world champions and speed record holders have trusted chris for their power so when you want to explore the performance possibilities of your new milwaukee 8 engine, who better to trust.

Chris Rivas Rocket Cams Twin Cam Best power with free-flow air cleaner and performance exhaust.Cruising hi-torque bolt-in cams.Incredible low rpm pulling power recommended for heavier bikes with stock compression ratio or up to 9.5:1.Peak performance at 1500 to 5000 rpm.Use stock valve springs.Very easy on valve train parts