Twin Cam Packages
(Choose your casting then select the stage for more information)

Non SE/CVO/MVA Castings

Stage 1 - $345

Includes:

Performance Valve Job
Touch-up porting under seats

“Valve Job” is such a critical foundation for the overall foundation of the cylinder head. We spend countless hours researching the angles that benefit the stock ports maximum benefit. We spend time hand finishing under the seat on the intake side to grab those last few extra CFM. Every head is then surfaced for flatness (up to .010” per the customer’s request) to ensure our MLS head gasket will seal as it should. Heads are thoroughly cleaned, inspected, valve seats are formed, valve faces renewed and assembled with high temperature Viton seals. 1.720 window

Stage 2 - $799

(*This service is for 06 up castings, not available for the 1999-2005 castings)

Includes:

Performance Valve Job
Touch-up porting under seats
New .600" Lift Beehive Spring Pack
New Bronze Guides
New Intake and Exhaust Valves

This is the service that has put XLXBhorsepower on the map, by far the best ‘bang for the buck’ for your everyday ride. Combine the above Stage 1 service, new bronze guide liners to tighten up the valve to guide tolerance & a premium .600” spring pack set to the cams spec. Bowl blending will extend down further beneath the seat in the critical areas. Stem protrusion and seat pressures will be tailored to your cam to ensure maximum longevity on your hot rod street bike whether it’s a Bagger, Softail or Dyna. This is hands down the best choice for your everyday rider on a budget-- Balanced HP & TQ results without sacrificing and losing the port velocity with the huge valves found in the bigger builds. 1.720 window

*Why is this service not available for the early 99-05 TC castings? These first castings missed the mark on the exhaust port, for anything performance minded they need the guides knocked out of the way and an extensive amount of material removed to get them to flow. These castings are fine for a stock replacement rider but require the Stage 3 service to make the larger #’s.

Stage 3 - $1,095

Includes:

Performance Valve Job
Full 'Street' Port with XLXB Exclusive Texture Intake Finish
New .650" Lift Beehive Spring Pack
New Bronze Guides
New 1.900 Intake and Exhaust Valves

Exactly what the title says, when you’re building that larger CI motor and want the results on the left side of the scale this is your choice. We knock the original guides out of the way to ensure we have access to port every inch, where it counts in the port. Replaced with premium bronze guides sized to control that valve as it should be, new premium valves 1.900” both intake and 1.610 exhaust. The factory intake seat safely allows the installation of a 1.900 valve which helps keep the cost down. 1.800 window

Stage 4 - $1,395

Includes:

Performance Valve Job
Full 'Race' Port with XLXB Exclusive Texture Intake Finish
New .650" Lift Titanium Dual Spring Pack
New Bronze Guides
New 1.980 Intake Valves and Exhaust Valves
New Intake Valve Seats

Building the biggest bore street / strip motor, this is your pick! We install oversize intake seats to accommodate a 1.980 / 2” valve to grab every CFM possible out of a 1.800 window. This requires the replacement of the intake seats to accommodate that huge valve. This will get your (non-SE) stock head castings up to the level many replace with the 110 casting. Pitfall to the 110 casting in the huge chamber size requiring a large dome piston to get your compression back. For the smaller ci builds, 98” / 107” this is a much option that going to the 110 casting.

**Titanium Valves available by request for additional cost

110/SE/CVO/MVA Castings

Stage 1 - $399

Includes:

Performance Valve Job
Touch-up porting under seats

Stage 2 - $799

Includes:

Performance Valve Job
Touch-up porting under seats
New .650" Lift Beehive Spring Pack
New Bronze Guides
New Intake and Exhaust Valves

This is the service that has put XLXBhorsepower on the map, by far the best ‘bang for the buck’ for your everyday ride. Combine the above Stage 1 service, new valves & a premium .650” Beehive spring pack set to the cams spec. Bowl blending will extend down further beneath the seat in the critical areas. Stem protrusion and seat pressures will be tailored to your cam to ensure maximum longevity on your hot rod street bike whether it’s a Bagger, Softail or Dyna. This is hands down the best choice for your everyday rider on a budget-- Balanced HP & TQ results without sacrificing and losing the port velocity with the huge valves found in the bigger builds.

Stage 3 - $1095

Includes:

Performance Valve Job
Full 'Street' Port with XLXB Exclusive Texture Intake Finish
New .650" Lift Steel Dual Spring Pack
New Bronze Guides
New 2.100 Intake and Exhaust Valves

Exactly what the title says, when you’re building that larger CI motor and want the results on the left side of the scale this is your choice. We knock the original guides out of the way to ensure we have access to port every inch, where it counts in the port. Replaced with premium bronze guides sized to control that valve as it should be, new premium valves: 2.100” intake and 1.610 exhaust. The factory intake seat safely allows the installation of this valve which helps keep the cost down. 1.800 window

Stage 4 - $1,395

Includes:

Performance Valve Job
Full 'Race' Port with XLXB Exclusive Texture Intake Finish
New .650" Lift Titanium Dual Spring Pack
New Bronze Guides
New 2.150 Intake and Exhaust Valves
New Intake Valve Seats

Building the biggest bore street / strip motor, this is your pick! We install oversize intake seats to accommodate a 2.150” valve to grab every CFM possible out of a 1.800 window. This requires the replacement of the intake seats to accommodate that huge valve. Great value for the serious street builds that also find themselves the track on the weekends. With all the Max Effort services, we include a premium Titanium spring pack, depending on your riding style and lifter set up (hydraulic or solid) we will set the spring pack in per your requirements to ensure we control that large valve.

**Titanium Valves available by request for additional cost

Twin Cam Packages
(Choose your casting then select the stage for more information)

Non SE/CVO/MVA Castings

110/SE/CVO/MVA Castings

About Us

Support

Contact Us

Twin Cam Packages​ (Choose your casting then select the stage for more information)

Non SE/CVO/MVA Castings

110/SE/CVO/MVA Castings

About Us

Support

Contact Us

Twin Cam Packages
(Choose your casting then select the stage for more information)