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. The 124" kit works on 2017-2019 H-D Milwaukee-Eight 107" engines (air cooled & twin cooled), and the FM 128 kit works on 2017-2019 114" and 117" engines. When combined with the appropriate performance modifications offers output in excess of 140+ horsepower; even more with head work.More on the M8 124" and 128" Big Bore Kits »
The Fuel Moto 110" Big Bore offers the biggest bolt on displacement available for H-D Twin Cam 96" and 103" motors, it features our 110 Extreme Duty Cylinders with special high tensile strength steel sleeves that drop on without case boring. This complete kit works on all 2007-Later Twin cam 96" and 103" motors, it delivers absolute top level performance and reliability and includes all necessary components required for installation.More on 110" Big Bore Kit »
The Fuel Moto 107" Big Bore is a complete kit with the absolute highest quality components, all of which have been extensively tested in house both on the dyno as well as in real world conditions to deliver top level performance. This kit works on all 2007-2016 Twin cam 96" and 103" motors and delivers absolute top level performance and reliability. Our Fuel Moto 107" kit works with stock cylinder heads and valve train, or if you are looking for the next level of performance complement your build with our Fuel Moto Level B heads.More on 107" Big Bore Kits »
For those looking for big bore pistons & cylinders that are assembling their own combinations Fuel Moto offers a wide range of options for both Twin Cam and Milwaukee Eight engines. These piston & cylinder kits include the highest quality components, they include pistons, cylinders, MLS head gaskets and the appropriate base o-rings or gaskets.Shop Fuel Moto Piston & Cyl Only Kits »
The Fuel Moto 98" Big Bore is a complete kit with the highest quality components all of which have been extensively tested in house both on the dyno as well as in real world conditions. This kit is available for 99-06 Twin cam 88" motors and delivers absolute top level performance.More on the 98" Big Bore Kit »
The Fuel Moto 124” Street Outlaw is a complete turn key Twin Cam engine for 2007-2016 FLH models designed to deliver top level horsepower & torque. These crate engines are built with top shelf components and include MSO (Manufacturer Certificate of Origin).More on the 124" Street Outlaw Engine »
Ready to take your CVO 110" motor to the next level? The Fuel Moto 113" Big Bore is a complete kit built with industry leaders such as Wood Performance. Take things a step further and pair the 113" Big Bore package with Fuel Moto CNC CVO Heads for the ultimate performance and reliability. We have spent years performing R&D to find the ultimate combination of components to maximize performance while maintaining the reliability you have come to know and expect.
Ready to take your SE 120R/ST motor to the next level? The Fuel Moto 124" big bore takes these popular Harley crate engines from mild to wild with NO case boring required! The Fuel Moto 124" big bore kit offers substantial horsepower gains along with huge torque gains. As with all Fuel Moto big bore kits, not only will you see increases in performance, but also with reliability.