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Cylinder Head Service (Twin Cylinder)
Twin Cam Cylinder Head Service
We offer comprehensive cylinder head service packages that are suited to capture your specific needs. Utilizing the latest in CNC technology, all cylinder heads are meticulously serviced for either performance upgrades or rebuilds.
In addition to the three tiered cylinder head service packages we offer, available options include:
- Valve Springs
- Valve Guide Replacement
- Seats Replacement
- Aftermarket Retainers
- VHM Aftermarket Valves
- CNC Chamber Cut
- Drill for Compression Release
- Machined VHM Logo
V1 - Performance Plus
$999.99
This package is designed to enhance engine performance for stock-style rebuilds with up to 10.5:1 compression, addressing the limitations of factory power output. Our Street Port offers significant gains, maximizing the performance of a “streetable” bike using original cylinder head components. It is crafted to improve lower and mid-level performance without sacrificing driveability. This package includes:
- CNC Porting
- Head Surfacing .010″
- CNC Valve Job
- Port / Chamber Blending
- VHM 1.805” Intake Stainless Steel Valve
- VHM 1.575” Exhaust Stainless Steel Valve
- VHM .600” Lift Spring Kit
- Viton Valve Seals
- Machined VHM Logo
V2 - Performance Pro
$1,119.99
The Vance & Hines Motorsports cylinder head service package is intended for modified engines up to 113ci and 10.5:1 compression. It is designed to enhance mid and upper RPM range performance while increasing top-end power. This package includes:
- CNC Porting
- Head Surfacing up to .025″
- CNC Valve Job
- Port / Chamber Blending
- VHM 1.900″ Intake Valve Installation
- VHM 1.610″ Exhaust Valve Installation
- VHM .600” Lift Spring Kit
- Viton Valve Seals
- Machined VHM Logo
V3 - RACE PLUS
$1,349.99
The Vance & Hines Motorsports cylinder head service package is intended for modified engines up to 117ci and above 10.6:1 compression, as well as those with power adders. It is designed to enhance mid and upper RPM range performance while increasing top-end power. This package includes:
- CNC Porting
- Head Surfacing up to .025″
- CNC Valve Job
- Port / Chamber Blending
- VHM 1.900″ Intake Valve Installation
- VHM 1.630″ Exhaust Valve Installation
- VHM .600” Lift Spring Kit
- Viton Valve Seals
- Machined VHM Logo
V4 - Race Pro
$1,694.99
Designed for high-performance, heavily modified, large-displacement engines up to 131ci, this is the top-tier cylinder head service offered by Vance & Hines Motorsports. Utilizing technology developed in collaboration with many factory teams and some of racing’s most accomplished riders, this package is engineered for optimal power output for your V-Twin engine. The Race Pro cylinder head package includes:
- CNC Porting
- Head Surfacing up to .025″
- CNC Valve Job
- Port / Chamber Blending
- VHM 2.000″ Intake Valve Installation
- VHM 1.630″ or 1.650” Exhaust Valve Installation
- Viton Valve Seals
- Valve Guides
- Intake & Exhaust Seats
- .675 Steel Retainer Dual Spring Kit
- Machined VHM Logo
V1 - Milwaukee-Eight PERFORMANCE PLUS
$1,599.99
The Performance Plus package is specifically crafted to optimize 107ci to 117ci displacement engines, delivering increased horsepower and torque. Engineered to maximize head potential, this package achieves impressive gains while maintaining the original valve sizes. This package includes:
- CNC Porting
- Weld & Deck Head Surfaces .010"
- Blend Ports and Chambers
- CNC Full Radius Valve Job
- VHM 1.570" Intake Stainless Steel Valve
- VHM 1.260" Exhaust Inconel Valve
- .550" Lift Beehive Spring Kit with Steel Retainers
- Viton Valve Seals
- 86.2cc Chamber Volume
- Machined VHM Logo
V2 - Milwaukee-Eight PERFORMANCE PRO
$1,749.99
The Vance & Hines Motorsports Pro Performance cylinder head service package is designed for race-modified engines ranging from 107 to 128 ci displacement. The Pro Performance Port enhances mid-to-upper RPM ranges, delivering significant horsepower and torque gains through the rev limit, all without sacrificing drivability. For optimal results, pairing this package with a larger throttle body is recommended to further boost head performance. This package includes:
- CNC Porting
- Weld & Deck Head Surfaces .010"
- Blend Ports and Chambers
- CNC Full Radius Valve Job
- VHM 1.610" Intake Stainless Steel Valve
- VHM 1.300" Exhaust Inconel Valve
- .550" Lift Beehive Spring Kit with Steel Retainers
- Viton Valve Seals
- 87.2cc Chamber Volume
- Machined VHM Logo
V3 - Milwaukee-Eight Race Plus
$1,999.99
Designed for race performance and highly-modified 131 ci and larger engines. This is a “Race Proven” cylinder head service with exceptional performance and throttle response offered by Vance & Hines Motorsports. Using technology learned by our factory teams, including some of racing’s most accomplished riders, this package is designed for optimal torque and power output for your V Twin engine. This package includes:
- CNC Porting
- Weld & Deck Head Surfaces .010"
- Intake & Exhaust Seats Installation
- CNC Full Radius Valve Job
- Blend Ports and Chambers
- VHM 1.650" M8 Intake Valve +2mm
- VHM 1.340" M8 Exhaust Valve +2mm
- 1.900” Intake runner opening
- .625” Lift Sprint Kit (seal, pad, retainer, spring)
- Viton Valve Seals Installation
- Gen 1 88.8cc Chamber Volume
- Gen 2 87.0cc Chamber Volume
- Machined VHM Logo
V4 - Milwaukee-Eight Race Pro
$2,199.99
- CNC porting for improved airflow.
- Welding and decking of head surfaces to optimize compression.
- Installation of high-grade intake and exhaust seats.
- Precision CNC full radius valve job to enhance airflow dynamics.
- Blended ports and chambers for smooth transitions.
- High-performance VHM 1.650” M-8 intake and 1.340” M8 exhaust valves (+2mm).
- .625” lift spring kit for superior valve control.
- Viton valve seals for enhanced sealing under extreme conditions.
- Gen 1 88.8cc Chamber Volume
- Gen 2 87.0cc Chamber Volume
- Oversized Intake Manifold Match & Port Blend
- Machined VHM Logo
V5 - Milwaukee-Eight Race Pro Kit
$4,699.99
Learn more about what is included and purchase service HERE
Start A Service Order
To start your service order, please fill out the form below. Once submitted, you'll receive an email with your completed form. Please print and include this form with your part when shipping it to us to ensure quick and efficient processing. If you have any questions, feel free to call us at +1 (317) 852-9057.
