Our Fuel Moto 124' and 128' M8 bore kits are true bolt on combinations (no case boring required) and are sold as complete kits with the absolute highest quality components, all of which have been extensively tested in house both on the dynamometer as well as in real world conditions to deliver top level performance. The 124' kit works on 2017-2019 H-D Milwaukee-Eight 107' engines (air cooled & twin cooled) and the 128' kit works on 2017-2019 114 & 117 engines. When combined with the appropriate performance modifications offers output in excess of 140+ horsepower.
Purchase the Revolution Performance 124' Monster Big Bore Kit Granite at J&P Cycles, your source for aftermarket motorcycle parts and accessories, with free everyday tech support. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership when you get a Revolution Performance 124' Monster Big Bore Kit Granite (part. Fuel Moto M8 124 128 Big Bore Kits Our Fuel Moto 124' and 128' M8 bore kits are true bolt on combinations (no case boring required) and are sold as a complete kits with the absolute highest quality components, all of which have been extensively tested in house both on the dynamometer as well as in real world conditions to deliver top level performance. DmHirmg Zipper Repair Kit Zipper Replacement Pack Zipper Fix Instant with Zipper Plier,Zipper Pull,Zipper Stops for Clothing Luggage Backpacks(All-in-One) 3.8 out of 5 stars 111 $9.99 $ 9. Diablo Kit Stage-1 98'-107' $1,550.00 Sale $1,450.00 Sale. 1999-2006 -2007-2016 Harly Davison models. New Big bore cylinders and Forge pistons Drago's 565 or Drago's 580 cam your choice S&S quick pushrods and tubes Drago's Bearing and gasket kit for cams Head Gasket and Base & gaskets No waiting time on this. 100% bolt in kit.
Fuel Moto M8 128' Big bore kit $1699.00
Contact us at 920-423-3309 with questions or to place your order!
The Fuel Moto M8 124' and 128' kits include the following:
Custom Fuel Moto / CP Carillo Forged Pistons
These forged pistons from CP Carillo are available in a specifically customized 11.0:1 compression ratio. The ring end gap is already set ready to be installed.
New Precision bored cylinders with iron ductile liner
The Fuel Moto M8 124' & 128' big bore kit includes NEW cylinders with a ductile iron sleeve. Cylinders are black with silver highlights.
Wood Performance Knight Prowler Camshaft
The camshaft is the workhorse of any big bore kit which is why every single Fuel Moto big bore kit has a Wood Performance Knight Prowler camshaft inside. The Wood Performance WM8-408 has been built with this kit in mind and provides a strong power band offering early torque and high end horsepower alike. There are other cam options available, please contact us at 920-423-3309 for details.
Wood Performance Alpha Series Directional Lifters
We all want more power with a big bore kit but would never want to sacrifice reliability. The Wood Performance Alpha Series Directional Lifters are a key component which addresses a common concern with the stock lifters which are simply not designed for the increased performance of a big bore kit. We are also a huge advocate of new parts on new parts so with a brand new Wood Performance camshaft we also install the brand new lifters on each and every build we perform in house.
Fuel Moto 'EZ' Quick Install Adjustable Pushrods
The Fuel Moto quick install adjustable pushrods are the finest pushrods available. Chromoly design for maximum strength and durability these pushrods install right inside of the stock pushrod tube covers.
All Necessary Gaskets, O-Rings and a Torrington Style Inner Cam Bearing
No one wants to be in the middle of a build and find that they are missing a gasket or o-ring to complete their build. With the Fuel Moto big bore kits all the necessary gaskets, o-rings and inner cam bearing are included. We have already performed in house stress tests to find the best performing parts to ensure your build is reliable for years to come.
Unlimited Technical Support From Fuel Moto
You have done all of your research but maybe you still have a question. The technicians at Fuel Moto have the answers and would welcome your call. With every Fuel Moto big bore kit purchase we include unlimited technical support. Shoot us an email at info@fuelmotousa.com or give us a call at 920-423-3309 - we will work together to get you up and running.
Retail Price:
FM 124 and 128 kits: $1699.00 Complete
Professional turn key Installation:
$3099.00* at our location including the complete kit, break in & dyno tune on our state of the art dyno. (*does not include EFI tuning device, exhaust system, throttle body, valve springs, injectors or other associated parts such as oil & filter)
Recommended Components
Screamin' Eagle High-Flow Injector Kit - $159.95
The Fuel Moto 120' big bore kit exceeds the flow capabilities of the OEM injectors and will require the 5.5G/Sec high-flow injector upgrade kit. These injectors are a direct upgrade for your OEM injectors and are recommended to be installed into the stock throttle body.
Wood Performance BW-4V Valve Springs - $425
We all want more power with a big bore kit but would never want to sacrifice reliability. The Wood Performance BW-4V Valve Springs prevent additional stress from utilizing a higher lifter camshaft.
Fuel Moto / AIM Variable Pressure Clutch - $350
The Fuel Moto / AIM variable pressure clutch is the most cost effective and powerful kit available to upgrade your H-D stock clutch to handle the added power of the Fuel Moto big bore kit. Developed by Fuel Moto with a specific weight combination to suit our engine packages this clutch will support 135+ horsepower / torque with the upgraded springs.
Dynojet Power Vision - $399.99
The Dynojet Power Vision is a flash based fuel tuning tool which allows your motorcycle to be properly re-tuned for your Fuel Moto big bore kit and other performance modifications. We offer base fuel maps and continued fuel map support for your big bore kit with the Power Vision at no additional cost.
Jackpot M8 XXX and 2/1/2 Head Pipes
The Jackpot Milwaukee-Eight Head Pipes are designed specifically for the tuning & performance characteristics of the new Harley-Davidson Milwaukee-Eight. Fuel Moto has spent countless hours developing our head pipe and our systems continue to be the highest quality, best performing head pipes on the market! The Jackpot XXX and 2/1/2 head pipes accept the factory M8 heat shields.
Fuel Moto M8 Cylinder Head Porting - $899-$1299
Zipper 124 Big Bore Kit Briggs And Stratton
The Fuel Moto M8 Level A and Level B CNC cylinder heads were developed through dyno & extensive flowbench testing to deliver maximum performance on hi-output H-D Milwaukee-Eight engines. The Fuel Moto heads are CNC ported and are best suited to 117' & larger engines developing 130-160 horsepower.
Professional turn key Installation:
$3099.00* at our location including the complete kit, break in & dyno tune on our state of the art dyno. (*does not include EFI tuning device, exhaust system, throttle body, valve springs, injectors or other associated parts such as oil & filter)
Recommended Components
Screamin' Eagle High-Flow Injector Kit - $159.95
The Fuel Moto 120' big bore kit exceeds the flow capabilities of the OEM injectors and will require the 5.5G/Sec high-flow injector upgrade kit. These injectors are a direct upgrade for your OEM injectors and are recommended to be installed into the stock throttle body.
Wood Performance BW-4V Valve Springs - $425
We all want more power with a big bore kit but would never want to sacrifice reliability. The Wood Performance BW-4V Valve Springs prevent additional stress from utilizing a higher lifter camshaft.
Fuel Moto / AIM Variable Pressure Clutch - $350
The Fuel Moto / AIM variable pressure clutch is the most cost effective and powerful kit available to upgrade your H-D stock clutch to handle the added power of the Fuel Moto big bore kit. Developed by Fuel Moto with a specific weight combination to suit our engine packages this clutch will support 135+ horsepower / torque with the upgraded springs.
Dynojet Power Vision - $399.99
The Dynojet Power Vision is a flash based fuel tuning tool which allows your motorcycle to be properly re-tuned for your Fuel Moto big bore kit and other performance modifications. We offer base fuel maps and continued fuel map support for your big bore kit with the Power Vision at no additional cost.
Jackpot M8 XXX and 2/1/2 Head Pipes
The Jackpot Milwaukee-Eight Head Pipes are designed specifically for the tuning & performance characteristics of the new Harley-Davidson Milwaukee-Eight. Fuel Moto has spent countless hours developing our head pipe and our systems continue to be the highest quality, best performing head pipes on the market! The Jackpot XXX and 2/1/2 head pipes accept the factory M8 heat shields.
Fuel Moto M8 Cylinder Head Porting - $899-$1299
Zipper 124 Big Bore Kit Briggs And Stratton
The Fuel Moto M8 Level A and Level B CNC cylinder heads were developed through dyno & extensive flowbench testing to deliver maximum performance on hi-output H-D Milwaukee-Eight engines. The Fuel Moto heads are CNC ported and are best suited to 117' & larger engines developing 130-160 horsepower.
Few things in life are more satisfying than the element of surprise, whether it's slow playing a poker hand or unleashing a sleeper at the drag strip. That's why there's the Zipper's Sleeper 124 Kit. This powerful parts pacakage transforms your 3.937-inch bore 107-inch M8-powered machine to 4.125-inch bore and 124 cubes with a drop-on piston and cylinder kit. It's all internal, leaving the competition and the po-po none the wiser. That is, until you pin the throttle and let the beast off the chain.
M8 107 Big Bore Kits
The new cylinders are treated to the best precision boring and honing process you can find. Zipper's technicians precisely measure each piston to provide skilled, old-fashioned sizing processes to the cylinders. Mounted in special torque plates, a CNC-hone is used to create a straight and true finish. Xmind tool. That's topped off with brush-finish technology that requires minimal run time for ring seating while providing best power. Choose the Red Shift cam (468 for Tire-Shredding Early Torque or the 472 for a Sophisticated Balanced Power setup) that best matches your riding style. Zipper's packages it up with a new full complement cam bearing, top end-cam chest gasket set, and Quickee pushrods and covers to simplify reassembly. Pick up one of these stealthy big bore kits from Zipper's here.
S&s 124 M8 Kit
In compliance with ARB emissions laws, this product is not sold or shipped to California.
