Halltech Systems Flex-Lock 4.5-Inch to 4.25-Inch Reducing Hump Hose - Hose with PCV Hole - No PCV Fitting Needed (2006 - 2013 Chevrolet Corvette C6 Z06 / 2008 - 2013 C6 LS3 / 2010 - 2013 Grand Sport) - H-4.5X4.25-RHH
Connect a Halltech KillerBee-series intake bridge to a Nick Williams 103 throttle body with the Halltech Systems Flex-Lock 4.5-Inch to 4.25-Inch Reducing Hump Hose H-4.5X4.25-RHH. The 4.5-inch intake-side ID is sized for Halltech's KillerBee-series intake bridges, while the 4.25-inch throttle-body-side ID fits the Nick Williams 103 throttle body. This configuration includes Halltech's added PCV hole in the throttle-body hose but does not include a PCV elbow fitting, making it the correct choice when you already have the fitting needed for your PCV connection.
Halltech engineered its Flex-Lock hose to do more than simply reduce one connection diameter to another. The mandrel-formed hose features seven-layer Nomex-reinforced silicone construction, a compliant hump section that accommodates engine movement and torque, and internal grip ridges at each end for increased engagement with the intake bridge and throttle body. The hose measures 3 inches long with a nominal 0.142-inch wall thickness and includes two stainless steel hose clamps for installation.
Specifications
- Manufacturer: Halltech Systems
- Part Number: H-4.5X4.25-RHH
- Product: Flex-Lock 4.5-Inch to 4.25-Inch Reducing Hump Hose
- Intake-Side ID: 4.5 inches
- Throttle-Body-Side ID: 4.25 inches
- Intake Compatibility: Halltech KillerBee-series intake bridges
- Throttle Body Compatibility: Nick Williams 103 throttle body
- Hose Length: 3 inches
- Nominal Hose Thickness: 0.142 inch
- Construction: Seven-layer Nomex-reinforced silicone
- Design: Mandrel-formed reducing hump hose
- Grip Design: Internal grip ridges at each end
- Hump Section: Compliant design to accommodate engine movement and torque
- Hose Clamps: Two stainless steel hose clamps included
- PCV Hole: Included with this configuration
- PCV Fitting: Not included with this configuration
Features
- Transitions from a 4.5-inch Halltech KillerBee-series intake bridge to a 4.25-inch Nick Williams 103 throttle body connection
- Halltech Flex-Lock design combines controlled flexibility with positive mechanical grip
- Seven-layer Nomex-reinforced silicone construction
- Compliant hump section accommodates engine movement and torque
- Internal grip ridges increase engagement at both ends of the hose
- Mandrel-formed construction
- 3-inch overall hose length
- Nominal 0.142-inch hose thickness
- Includes two stainless steel hose clamps
- PCV hole included in the hose
- No PCV elbow fitting included with this configuration
Built for a KillerBee Intake and Nick Williams 103 Throttle Body
The H-4.5X4.25-RHH is purpose-sized for the transition between a Halltech KillerBee-series intake bridge and a Nick Williams 103 throttle body. Its 4.5-inch intake-side ID fits the KillerBee-series bridge, while the 4.25-inch throttle-body-side ID fits the larger Nick Williams 103 throttle body. This gives you the required size transition in a hose engineered specifically for the intake-to-throttle-body connection.
Seven-Layer Nomex-Reinforced Flex-Lock Construction
Halltech's Flex-Lock design uses seven-layer Nomex-reinforced silicone construction to create a resilient connection between the intake system and throttle body. The hose is mandrel formed, measures 3 inches long, and has a nominal wall thickness of 0.142 inch. The result is a purpose-built transition hose designed to provide controlled flexibility while maintaining secure engagement at both ends.
Compliant Hump Section Handles Engine Movement
An intake-to-throttle-body connection has to deal with movement as the engine reacts to torque. Halltech addresses that with a compliant hump section built into the H-4.5X4.25-RHH. The hump allows the hose to flex where movement needs to be accommodated rather than creating a completely rigid connection between the throttle body and intake system.
Internal Grip Ridges Add Mechanical Engagement
Halltech incorporates internal grip ridges at each end of the Flex-Lock hose to increase engagement with the throttle body and intake bridge. Those ridges work with the two included stainless steel hose clamps to create a secure connection, adding mechanical grip rather than relying solely on clamp pressure against a smooth inner hose surface.
PCV Hole Included - Use Your Existing PCV Fitting
This H-4.5X4.25-RHH configuration is ordered with Halltech's added PCV hole already provided in the throttle-body hose. The PCV elbow fitting is not included because this version is intended for installations where a suitable fitting is already available and another fitting is not needed. This eliminates the need to create the PCV opening yourself while avoiding the cost of purchasing an additional fitting you do not need.
Fitment
- 2006 Chevrolet Corvette C6 Z06
- 2007 Chevrolet Corvette C6 Z06
- 2008 Chevrolet Corvette C6 Z06
- 2009 Chevrolet Corvette C6 Z06
- 2010 Chevrolet Corvette C6 Z06
- 2011 Chevrolet Corvette C6 Z06
- 2012 Chevrolet Corvette C6 Z06
- 2013 Chevrolet Corvette C6 Z06
- 2008 Chevrolet Corvette C6 LS3
- 2009 Chevrolet Corvette C6 LS3
- 2010 Chevrolet Corvette C6 LS3
- 2011 Chevrolet Corvette C6 LS3
- 2012 Chevrolet Corvette C6 LS3
- 2013 Chevrolet Corvette C6 LS3
- 2010 Chevrolet Corvette C6 Grand Sport
- 2011 Chevrolet Corvette C6 Grand Sport
- 2012 Chevrolet Corvette C6 Grand Sport
- 2013 Chevrolet Corvette C6 Grand Sport
Fitment Note: This reducing hump hose is intended for the applicable Halltech KillerBee-series intake bridge paired with a Nick Williams 103 throttle body. Vehicle year and model alone do not determine compatibility. This configuration has the PCV hole in the hose but does not include the optional PCV elbow fitting.
FAQs
What throttle body does the Halltech H-4.5X4.25-RHH fit?
The 4.25-inch end is designed to fit a Nick Williams 103 throttle body, while the 4.5-inch end fits Halltech KillerBee-series intake bridges. The reducing hose provides the transition required between those two connection sizes.
Does this H-4.5X4.25-RHH come ready for a PCV connection?
The hose is supplied with Halltech's added PCV hole, but this configuration does not include the optional PCV elbow fitting. It is intended for an installation where the PCV opening is required but you already have the appropriate fitting and do not need another one included with the hose.
Get Your Halltech Flex-Lock Reducing Hump Hose from Beefcake Racing
Upgrade the connection between your Halltech KillerBee intake and Nick Williams 103 throttle body with the H-4.5X4.25-RHH Flex-Lock Reducing Hump Hose from Beefcake Racing. This configuration arrives with the PCV hole in the hose and without an additional PCV fitting. For help confirming your intake, throttle body, or PCV configuration before ordering, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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