J&B Cycles | Hellfire Heads

The skilled process of porting and texturing heads requires an in-depth understanding of how a head flows to achieve the correct CFM and Velocity. Not only do we understand the complexity of a head, but we also possess the state of the art equipment to prove what we know in real life applications.

"SuperFlow SF-300"

Measures the amount of CFM and Velocity of air that’s being moved through the Cylinder Head

"Porting & Texturing"

Side by side Porting and Texturing for consistency and accuracy

"Valves Seats"
The ROBINS 7G-7 cuts the valves seats using our proprietary angle and radius blades

"Setting Compression & CC's"

The lathe sets compression for correct chamber volume of the Cylinder Heads

"Valve Spring Set Up"

The Intercomp spring tester accurately measures springs for proper set up

CYLINDER HEAD PORTING PACKAGES

"M8 STREET HEADS"

2017-2019

$1,399.00

H-D MILWAUKEE 8 CYLINDER HEADS FULL HAND PORT & TEXTURE

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST, COMPETITION VALVE JOB

CUT SEATS WITH PROPRIETARY ANGLES

NEW VITON 6MM VALVE SEALS

NEW AV&V .580" SPRINGS SET TO DESIRED SPEC

SET DESIRED CC FOR COMPRESSION

CNC PORTING OPTION AVAILABLE BELOW

NEW OR OVER-SIZED VALVES AVAILABLE AT ADDITIONAL COST

"M8 RENEGADE PRO HEADS"

2017-2019

$1,599.00

H-D MILWAUKEE 8 CYLINDER HEADS FULL CNC PORTED MAX EFFORT

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST, COMPETITION VALVE JOB

CUT SEATS WITH PROPRIETARY ANGLES

NEW VALVE GUIDES & VITON 6MM VALVE SEALS

NEW AV&V .580" SPRINGS SET TO DESIRED SPEC

SET DESIRED CC FOR COMPRESSION

NEW OR OVER-SIZED VALVES AVAILABLE AT ADDITIONAL COST

THROTTLE BODY PORTING AVAILABLE SEPARATELY

"HELLION XB/XL 1200 HEADS"

2004 - 2019 CASTINGS

$900.00

H-D SPORTSTER 1200 CYLINDER HEADS FULL HAND PORT & TEXTURE

AV&V 1.851" INTAKE WITH AV&V 1.575" EXHAUST

SET DESIRED CC FOR COMPRESSION

NEW AV&V VALVES, GUIDES, & SEALS

NEW AV&V SPRINGS SET TO DESIRED SPEC

CUT SEATS WITH PROPRIETARY ANGLES

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

CNC PORTING OPTION BELOW

883 CONVERSIONS AVAILABLE (CONTACT FOR DETAILS)

"HELLION PRO CNC 1200 HEADS"

2004-2019 CASTINGS

$995.00

H-D SPORTSTER 1200 CYLINDER HEADS CNC PORT & TEXTURE

AV&V 1.851" INTAKE WITH AV&V 1.575" EXHAUST

SET DESIRED CC FOR COMPRESSION

NEW AV&V VALVES, GUIDES, & SEALS

NEW AV&V SPRINGS SET TO DESIRED SPEC

CUT SEATS WITH PROPRIETARY ANGLES

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

"RENEGADE TC STREET HEADS & S&S CYCLE HEADS"

1999-2017

$950.00

H-D TWIN CAM CYLINDER HEADS FULL HAND PORT & TEXTURE

AV&V 1.900" - 1.940" INTAKE WITH AV&V 1.575" - 1.610" EXHAUST

SET DESIRED CC FOR COMPRESSION

NEW AV&V VALVES, GUIDES, & SEALS

NEW AV&V SPRINGS SET TO DESIRED SPEC

CUT SEATS WITH PROPRIETARY ANGLES

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

CNC PORTING OPTION AVAILABLE (CONTACT FOR DETAILS)

"EVO STREET HEADS"

1984-1999

$950.00

H-D EVO CYLINDER HEADS FULL HAND PORT & TEXTURE

AV&V 1.845" - 1.900" INTAKE WITH AV&V 1.615" - 1.625" EXHAUST

SET DESIRED CC FOR COMPRESSION

NEW AV&V VALVES, GUIDES, & SEALS

NEW AV&V SPRINGS SET TO DESIRED SPEC

CUT SEATS WITH PROPRIETARY ANGLES

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

CNC PORTING OPTION AVAILABLE (CONTACT FOR DETAILS)

"HELLFIRE PERFORMANCE VALVE JOB"

1984-2017 BIG TWIN

$500.00

DISASSEMBLE, CLEAN, AND INSPECT CYLINDER HEADS

CLEAN VALVES AND RE-SURFACE

CUT SEATS WITH PROPRIETARY ANGLES

MULTI ANGLE INTAKE, FULL RADIUS EXHAUST

NEW AV&V VALVE SEALS

RE-ASSEMBLE WITH ORIGINAL STOCK PARTS

Why should you have J&B Cycles do your heads?

Porting and texturing heads is not a task that should be done by the average mechanic. Without an in-depth understanding of how your cylinder heads flow, and state of the art equipment, the possibility for things to go wrong is too high. A mistake in head work can decrease efficiency, engine longevity or even ruin your heads. Hellfire Heads is your source for V-Twin Proven Performance!

"Valves Seats" The ROBINS 7G-7 cuts the valves seats using our proprietary angle and radius blades

CYLINDER HEAD PORTING PACKAGES

"M8 STREET HEADS"

2017-2019

$1,399.00

H-D MILWAUKEE 8 CYLINDER HEADS FULL HAND PORT & TEXTURE

​

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST, COMPETITION VALVE JOB

​

CUT SEATS WITH PROPRIETARY ANGLES

​

NEW VITON 6MM VALVE SEALS

​

NEW AV&V .580" SPRINGS SET TO DESIRED SPEC

​

SET DESIRED CC FOR COMPRESSION

​

CNC PORTING OPTION AVAILABLE BELOW

​

NEW OR OVER-SIZED VALVES AVAILABLE AT ADDITIONAL COST

"M8 RENEGADE PRO HEADS"

2017-2019

$1,599.00

H-D MILWAUKEE 8 CYLINDER HEADS FULL CNC PORTED MAX EFFORT

​

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST, COMPETITION VALVE JOB

​

CUT SEATS WITH PROPRIETARY ANGLES

​

NEW VALVE GUIDES & VITON 6MM VALVE SEALS

​

NEW AV&V .580" SPRINGS SET TO DESIRED SPEC

​

SET DESIRED CC FOR COMPRESSION​

​

NEW OR OVER-SIZED VALVES AVAILABLE AT ADDITIONAL COST

​

THROTTLE BODY PORTING AVAILABLE SEPARATELY

"RENEGADE TC STREET HEADS & S&S CYCLE HEADS"

1999-2017

$950.00

H-D TWIN CAM CYLINDER HEADS FULL HAND PORT & TEXTURE

​

AV&V 1.900" - 1.940" INTAKE WITH AV&V 1.575" - 1.610" EXHAUST

​

SET DESIRED CC FOR COMPRESSION

​

NEW AV&V VALVES, GUIDES, & SEALS

​

NEW AV&V SPRINGS SET TO DESIRED SPEC

​

CUT SEATS WITH PROPRIETARY ANGLES

​

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

​

CNC PORTING OPTION AVAILABLE (CONTACT FOR DETAILS)

"EVO STREET HEADS"​

1984-1999

$950.00

H-D EVO CYLINDER HEADS FULL HAND PORT & TEXTURE

​

AV&V 1.845" - 1.900" INTAKE WITH AV&V 1.615" - 1.625" EXHAUST

​

SET DESIRED CC FOR COMPRESSION

​

NEW AV&V VALVES, GUIDES, & SEALS

​

NEW AV&V SPRINGS SET TO DESIRED SPEC

​

CUT SEATS WITH PROPRIETARY ANGLES

​

MULTI-ANGLE INTAKE, FULL RADIUS EXHAUST

​

CNC PORTING OPTION AVAILABLE (CONTACT FOR DETAILS)

"HELLFIRE PERFORMANCE VALVE JOB"

1984-2017 BIG TWIN

$500.00

​

DISASSEMBLE, CLEAN, AND INSPECT CYLINDER HEADS

​

"Valves Seats"
The ROBINS 7G-7 cuts the valves seats using our proprietary angle and radius blades

SET DESIRED CC FOR COMPRESSION

"EVO STREET HEADS"