98" Big Bore Kit

Fuel Moto 98" Big Bore Kit




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.




$1999 - 98" Big Bore Kit with your Core Exchange

$2298 - 98" Big Bore Kit with Extreme Duty Cylinders


The Fuel Moto 98" kit includes the following:


Custom Fuel Moto / CP Carillo Forged Pistons

Custom Fuel Moto / CP Carillo Forged Pistons

These custom forged pistons from CP Carillo are customized for this big bore kit at 10.0:1 compression. The ring end gap is already set and are simply ready to be installed.



Fuel Moto Extreme Duty Cylinders

Your choice: Precision bored OEM cylinders or Fuel Moto Extreme Duty Cylinders (add $299)

The standard 98" kit requires you to send us your OEM cylinders where they will be serviced and returned back to you with the big bore kit. If you were looking for a quicker turnaround we also offer a core exchange program for OEM cylinders. If you are looking for an upgraded cylinder we also offer the Fuel Moto Extreme Duty Cylinders for $299 with no need to send Fuel Moto your OEM 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.


Wood Performance Roller Cam Chain Conversion Kit

Wood Performance Roller Cam Chain Conversion Kit

At the heart of the 98" big bore kit is the Wood Performance RCC kit. This kit includes a hydraulic cam plate, oil pump, inner/outer cam chains, cam sprockets, tensioners and all necessary hardware to bring your cam chest to the 2007 & newer specification. The included cam plate accepts the unique Wood Performance conversion cams rather than OEM styled bolt in cams. The RCC kit is a robust platform to build the 98" kit to your needs while providing extended reliability.


Wood Performance Knight Prowler Camshafts

Wood Performance Knight Prowler Camshafts

The cams are the workhorse of any big bore kit which is why every single Fuel Moto big bore kit has a set Wood Performance Knight Prowler cams inside. We offer several choices to customize your big bore kit to your needs such as the Wood Performance TW-6-6R or TW-555-6R. Please note that for the 1999-2004 H-D models the use of the TW-555-6R cams will require updated valve springs or our Level B CNC cylinder heads. Give us a call at 920-423-3309 and a Fuel Moto technician will assist in finding the best cams to meet your needs.

Wood Performance Alpha Series Directional Lifters

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 brand new Wood Performance cams we also install the brand new lifters on each and every build we perform in house.

Fuel Moto Quick Install Adjustable Pushrods

Fuel Moto Quick Install Adjustable Pushrods

The Fuel Moto quick install adjustable pushrods are the finest pushrods available. With a .095" chromoly tapered design which is engineered for maximum strength and durability these pushrods install right inside of the stock pushrod tube covers. Also included is our unique pushrod tube tool which holds the tubes in place for easy adjustment.

All Necessary Gaskets, O-Rings and Torrington Style Inner Cam Bearings

All Necessary Gaskets, O-Rings and Torrington Style Inner Cam Bearings

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 bearings 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.

Complete Installation DVD

Complete Installation DVD

Most riders may not be rebuilding engines all that often but with a little guidance could install the Fuel Moto big bore kit. That is where this DVD comes in! We walk you through the entire build step by step, chapter by chapter. Still have a question, give a Fuel Moto technician a call at 920-423-3309.

Unlimited Technical Support From Fuel Moto

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.

Wood Performance RCC-2 Kit
Wood Performance RCC-2 Kit Included with 98" big bore kit

Retail Price:

$1999.00 Complete kit

Professional Installation:

$2899.00 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, or other associated parts such as oil & filter)

Fuel Moto also offers package deals for the 98" kit bundled along with tuning components, exhaust systems, and air cleaners. We have a wide range of 98" calibrations available for Dynojet Power Vision, PC-V, and Thundermax we can supply with our kits.


Optional Accessories


Fuel Moto Extreme Duty Cylinders

Fuel Moto Extreme Duty Cylinders - $299 (When added to complete kit)

Description: The Fuel Moto Extreme Duty cylinders are designed for maximum durability and top level performance for Twin Cam engines. For our 107" big bore kits they are available with a heavy duty centrifugally cast Ductile iron sleeve. The cylinder & piston combination in the 107" big bore kit are CNC bored and honed to exact specifications and come ready to install. 100% made in the USA.

Level B CNC Cylinder Head Porting

Level B CNC Cylinder Head Porting - $879

Description: The Level B CNC Cylinder Head porting service is our premium street performance head. It was developed over hundreds of dyno runs with a wide range of components for the best overall performance gains. This service makes exceptionally broad torque along with high RPM horsepower and allows for use of increased compression and a wider selection of camshafts with the 110" big bore kit.

Fuel Moto / AIM Variable Pressure Clutch

Fuel Moto / AIM Variable Pressure Clutch - $285-400

Description: 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 up to 130 horsepower / torque with the OEM spring and up to 150 horsepower / torque with the optional heavy duty spring all with up to 7% reduction in clutch lever effort.

Manual Compression Releases

Manual Compression Releases - $100 / pair

Description: When building your engine up from a 96ci your cylinder heads are not equipped with any sort of compression release. With the increased compression in a big bore kit it is highly recommended to have us install a set of manual compression releases. These simple push-button releases will prevent any excess wear to your motorcycle. Manual compression releases are not required when building your engine up from a 103ci engine as your cylinder heads are already equipped with compression releases.

Jagg Oil Coolers

Jagg Oil Coolers - $399-550

Description: If your motorcycle is not currently equipped with an oil cooler or you are simply not satisfied with the stock oil cooler's performance the addition of a Jagg oil cooler certainly makes a difference. There are several options to choose from such as a basic slim line oil cooler all the way up to a fan assisted oil cooler which utilizes a fan to pull air across the oil cooler when your motorcycle is not in motion.


Core Exchange

If you have purchased a Fuel Moto big bore kit and are sending back your cylinder cores for a core refund, returns are accepted within 30 days from the purchase date. If you are sending in your engine components to have service performed or if you have purchased a Fuel Moto big bore kit and are sending back your cylinder cores for a core refund please print, fill out, and include the following form with your return: Engine Component Returns Form.


Dyno Charts


2004 H-D Dyna | 98" Big Bore | Stock Heads | TW-6-6R Cams

Description: 2004 Harley-Davidson Dyna model with the Fuel Moto 98" big bore kit, Wood Performance TW-6-6R cams, Aftermarket slip on mufflers, Stock cylinder heads and dyno tuned using the Dynojet Power Vision fuel tuner.



2005 H-D Road Glide | 98" Big Bore | Stock Heads | TW-555-6R Cams

Description: 2005 Harley-Davidson Road Glide with the Fuel Moto 98" big bore kit, Wood Performance TW-555-6R cams, Rinehart True Dual exhaust, Stock cylinder heads and dyno tuned using the Dynojet Power Commander III USB fuel tuner.



2006 H-D Street Glide | 98" Big Bore | Level B Heads | TW-555-6R Cams

Description: 2006 Harley-Davidson Street Glide model with the Fuel Moto 98" big bore kit, Wood Performance TW-555-6R cams, Rinehart True Dual exhaust, Fuel Moto Level B CNC cylinder heads and dyno tuned using the Dynojet Power Commander III USB fuel tuner.



2005 H-D Street Glide | 98" Big Bore | Level B Heads | TW-555-6R Cams

Description: 2006 Harley-Davidson Street Glide model with the Fuel Moto 98" big bore kit, Wood Performance TW-555-6R cams, Stock head pipe with Screamin' Eagle slip on mufflers, Fuel Moto Level B CNC cylinder heads and dyno tuned using the Dynojet Power Vision fuel tuner.



2003 H-D Electra Glide | 98" Big Bore | Level B Heads | TW-555-6R Cams

Description: 2003 Harley-Davidson Electra Glide model with the Fuel Moto 98" big bore kit, Wood Performance TW-555-6R cams, Jackpot 2/1 exhaust, Fuel Moto Level B CNC cylinder heads and dyno tuned using the Dynojet Power Commander V fuel tuner.



2003 H-D Electra Glide | 98" Big Bore | Level B Heads | TW-555-6R Cams

Description: 2003 Harley-Davidson Electra Glide model with the Fuel Moto 98" big bore kit, Wood Performance TW-555-6R cams, Stock head pipe with Fuel Moto E-Series slip on mufflers, Fuel Moto Level B CNC cylinder heads and dyno tuned using the Dynojet Power Commander V fuel tuner.